background image

POWDER CORES

Kool Mµ

®

  

  Kool Mµ

® 

MAX  

  Kool Mµ

® 

Hƒ  

  XF

lux

®

  

  High Flux  

  Edge

®

  

  Molypermalloy

Magnetics-Powder-Core-Catalog-2020-html.html
background image

A major manufacturer of the highest performance 
materials in the industry including: Kool Mµ

®

,  

Kool Mµ

®

 MAX, Kool Mµ

®

 Hƒ, XF

lux

®

, High Flux, 

Edge

®

 and MPP, power ferrites, high permeability 

ferrites and strip wound cores. Magnetics’ products 
set the standard for providing consistent and reliable 
electrical properties for a comprehensive range of 
core materials and geometries. Magnetics is the 
best choice for a variety of applications ranging 
from simple chokes and transformers used in 
telecommunications equipment to sophisticated 
devices for aerospace electronics. 

Magnetics backs its products with unsurpassed 
technical expertise and customer service. 
Magnetics’ Sales Engineers offer the experience 
necessary to assist the designer from the initial 
design phase through prototype approval. 
Knowledgeable Sales Managers provide dedicated 
account management. Skilled Customer Service 
Representatives are easily accessible to provide 
exceptional sales support. This support, combined 
with a global presence via a worldwide distribution 
network, makes Magnetics a superior supplier to  
the international electronics industry.

We offer the confidence of over 

sixty years of expertise

 in the 

research, design, manufacture and support of high quality magnetic 
materials and components. 

COMPLIANT

RoHS

Magnetics Locations

Magnetics-Powder-Core-Catalog-2020-html.html
background image

www.mag-inc.com

1

Contents

Contents

Core Locator by Part Number

Core Index and Unit Pack Quantities  .  .  .  .  .  .  . 2

General Information

Introduction  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 10
Applications and Materials    .  .  .  .  .  .  .  .  .  .  .  .  . 11
Material Properties    .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 12
Core Weights and Unit Conversions   .  .  .  .  .  . 13
Core Identification   .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 14
Inductance and Grading   .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 15
Core Coating    .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 16

Core Selection

Inductor Core Selection Procedure   .  .  .  .  .  .  . 17
Core Selection Example    .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 18
Toroid Winding    .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 19
Powder Core Loss Calculation    .  .  .  .  .  .  .  .  .  . 20
Core Selector Charts    .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 25
Wire Table   .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 33

Material Data

Permeability versus DC Bias Curves   .  .  .  .  .  . 34
Core Loss Density Curves  .  .  .  .  .  .  .  .  .  .  .  .  .  . 42
DC Magnetization Curves   .  .  .  .  .  .  .  .  .  .  .  .  .  . 65
Permeability versus Temperature Curves   .  .  . 74
Permeability versus AC Flux Curves    .  .  .  .  .  . 80
Permeability versus Frequency Curves    .  .  .  . 85

Core Data

Toroid Data   .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 90
E Core Data    .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 130
Block Data    .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 131
U Core Data   .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 132
EQ and LP Core Data   .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 133

Hardware

E Core Hardware    .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 134
Toroid Hardware   .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 135

Winding Tables

Winding Tables   .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 137 

Index

< Click the page name 

or page number to go 
directly to the page

Magnetics-Powder-Core-Catalog-2020-html.html
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MAGNETICS

2

Core Locator & Unit Pack Quantity

Index

Kool Mµ

®

 Toroids

 77020

 .........

93

 ............

10,000

 77021

 .........

93

 ............

10,000

 77022

 .........

93

 ............

10,000

 77023

 .........

93

 ............

10,000

 77030

 .........

97

 ............

10,000

 77031

 .........

97

 ............

10,000

 77032

 .........

97

 ............

10,000

 77033

 .........

97

 ............

10,000

 77040

 ........

100

 .............

8,000

 77041

 ........

100

 .............

8,000

 77042

 ........

100

 .............

8,000

 77043

 ........

100

 .............

8,000

 77050

 ........

102

 .............

5,000

 77051

 ........

102

 .............

5,000

 77052

 ........

102

 .............

5,000

 77053

 ........

102

 .............

5,000

 77054

 ........

102

 .............

5,000

 77055

 ........

102

 .............

5,000

 77056

 ........

102

 .............

5,000

 77059

 ........

106

 .............

1,000

 

77068

 ........

121

 ..................

35

 77069

 ........

121

 ..................

35

 77070

 ........

121

 ..................

35

 77071

 ........

109

 ................

250

 77072

 ........

121

 ..................

35

 77073

 ........

121

 ..................

35

 77074

 ........

121

 ..................

35

 77075

 ........

121

 ..................

35

 77076

 ........

111

 ................

220

 77083

 ........

112

 ................

180

 77089

 ........

114

 ................

120

 77090

 ........

114

 ................

120

 77091

 ........

114

 ................

120

 77092

 ........

114

 ................

120

 77093

 ........

114

 ................

120

 77094

 ........

114

 ................

120

 77095

 ........

114

 ................

120

 77096

 ........

126

 ..................

25

 77098

 ........

126

 ..................

25

 77099

 ........

126

 ..................

25

 77100

 ........

126

 ..................

25

 77101

 ........

126

 ..................

25

 77102

 ........

126

 ..................

25

 77109

 ........

118

 ..................

90

 77110

 ........

118

 ..................

90

 77111

 ........

118

 ..................

90

 77112

 ........

118

 ..................

90

 77113

 ........

103

 .............

2,000

 77120

 ........

103

 .............

2,000

 77121

 ........

103

 .............

2,000

 77122

 ........

103

 .............

2,000

 77123

 ........

103

 .............

2,000

 77130

 ........

101

 .............

6,000

 77131

 ........

101

 .............

6,000

 77132

 ........

101

 .............

6,000

 77133

 ........

101

 .............

6,000

 77140

 .........

90

 ..............

1,500

 77141

 .........

90

 ..............

1,500

 77150

 .........

91

 .................

750

 77151

 .........

91

 .................

750

 77154

 .........

91

 .................

750

 77155

 .........

91

 .................

750

 77159

 ........

126

 ..................

25

 77164

 ........

128

 ....................

6

 77165

 ........

128

 ....................

6

 77180

 .........

92

 .................

500

 77181

 .........

92

 .................

500

 77184

 .........

92

 .................

500

 77185

 .........

92

 .................

500

 77189

 ........

119

 ..................

80

 77190

 ........

119

 ..................

80

 77191

 ........

119

 ..................

80

 77192

 ........

119

 ..................

80

 77193

 ........

119

 ..................

80

 77194

 ........

119

 ..................

80

 77195

 ........

119

 ..................

80

 77206

 ........

105

 .............

1,600

 77208

 ........

105

 .............

1,600

 77209

 ........

105

 .............

1,600

 77210

 ........

105

 .............

1,600

 77211

 ........

105

 .............

1,600

 77212

 ........

118

 ..................

90

 77213

 ........

118

 ..................

90

 77214

 ........

118

 ..................

90

 77224

 ........

103

 .............

2,000

 77225

 ........

103

 .............

2,000

 77240

 .........

94

 ............

10,000

 77241

 .........

94

 ............

10,000

 77242

 .........

94

 ............

10,000

 77243

 .........

94

 ............

10,000

 77244

 .........

94

 ............

10,000

 77245

 .........

94

 ............

10,000

 77254

 ........

112

 ................

180

 77256

 ........

112

 ................

180

 77257

 ........

112

 ................

180

 77258

 ........

112

 ................

180

 77259

 ........

112

 ................

180

 77260

 ........

112

 ................

180

 77270

 .........

95

 ............

10,000

 77271

 .........

95

 ............

10,000

 77272

 .........

95

 ............

10,000

 77273

 .........

95

 ............

10,000

 77280

 .........

98

 ..............

8,000

 77281

 .........

98

 ..............

8,000

 77282

 .........

98

 ..............

8,000

 77283

 .........

98

 ..............

8,000

 77290

 .........

99

 ..............

8,000

 77291

 .........

99

 ..............

8,000

 77292

 .........

99

 ..............

8,000

 77293

 .........

99

 ..............

8,000

 77294

 .........

99

 ..............

8,000

 77295

 .........

99

 ..............

8,000

 77310

 ........

106

 .............

1,000

 77312

 ........

106

 .............

1,000

 77313

 ........

106

 .............

1,000

 77314

 ........

106

 .............

1,000

 77315

 ........

106

 .............

1,000

 77316

 ........

106

 .............

1,000 

 77324

 ........

111

 ................

220

 77326

 ........

111

 ................

220

 77327

 ........

111

 ................

220

 77328

 ........

111

 ................

220

 77329

 ........

111

 ................

220

 77330

 ........

111

 ................

220 

 77334

 ........

101

 .............

6,000

 77335

 ........

101

 .............

6,000

 77336

 ........

127

 ..................

16

    77337

 ........

127

 ..................

16

 77338

 ........

127

 ..................

16

 77339

 ........

127

 ..................

16

 77350

 ........

107

 ................

720

 77351

 ........

107

 ................

720

 77352

 ........

107

 ................

720

 77353

 ........

107

 ................

720

 77354

 ........

107

 ................

720

 77355

 ........

107

 ................

720

 77356

 ........

107

 ................

720 

 77380

 ........

104

 .............

2,000

 77381

 ........

104

 .............

2,000

 77382

 ........

104

 .............

2,000

 77383

 ........

104

 .............

2,000

 77384

 ........

104

 .............

2,000

 77385

 ........

104

 .............

2,000

 77386

 ........

104

 .............

2,000

 77410

 .........

96

 ............

10,000

 77411

 .........

96

 ............

10,000

 77412

 .........

96

 ............

10,000

 77413

 .........

96

 ............

10,000

 77414

 .........

96

 ............

10,000

 77415

 .........

96

 ............

10,000

 77431

 ........

115

 ................

105

 77438

 ........

115

 ................

105

 77439

 ........

115

 ................

105

 77440

 ........

115

 ................

105

 77441

 ........

115

 ................

105

 77442

 ........

115

 ................

105

 77443

 ........

115

 ................

105

 77444

 .........

90

 ..............

1,500

 77445

 .........

90

 ..............

1,500

 77446

 ........

113

 ................

120

 77448

 ........

113

 ................

120

 77450

 ........

113

 ................

120

 77451

 ........

113

 ................

120

 77452

 ........

113

 ................

120

 77453

 ........

113

 ................

120

 77454

 ........

113

 ................

120

 77548

 ........

109

 ................

250

 77550

 ........

109

 ................

250

 77551

 ........

109

 ................

250

 77552

 ........

109

 ................

250

 77553

 ........

109

 ................

250

 77555

 ........

109

 ................

250

 77585

 ........

110

 ................

300

 77586

 ........

110

 ................

300

 77587

 ........

110

 ................

300

 77588

 ........

110

 ................

300

 77589

 ........

110

 ................

300

 77590

 ........

110

 ................

300

 77591

 ........

110

 ................

300

 77614

 ........

120

 ..................

45

 77615

 ........

120

 ..................

45

 77616

 ........

120

 ..................

45

 77617

 ........

120

 ..................

45

 77618

 ........

120

 ..................

45

 77619

 ........

120

 ..................

45

 77620

 ........

120

 ..................

45

 77715

 ........

117

 ..................

90

 77716

 ........

117

 ..................

90

 77717

 ........

117

 ..................

90

 77718

 ........

117

 ..................

90

 77719

 ........

117

 ..................

90

 77720

 ........

117

 ..................

90

 77721

 ........

117

 ..................

90

 77725

 ........

116

 ..................

70

 77726

 ........

116

 ..................

70

 77727

 ........

116

 ..................

70

 77728

 ........

116

 ..................

70

 77729

 ........

116

 ..................

70

 77730

 ........

116

 ..................

70

 77733

 ........

116

 ..................

70

 77734

 ........

122

 ..................

24

 77735

 ........

122

 ..................

24

 77736

 ........

122

 ..................

24

 77737

 ........

122

 ..................

24

 77738

 ........

122

 ..................

24

 77739

 ........

122

 ..................

24

 77740

 ........

122

 ..................

24

 77773

 ........

125

 ..................

25

 77774

 ........

125

 ..................

25

 77775

 ........

125

 ..................

25

 77776

 ........

125

 ..................

25

 77777

 ........

125

 ..................

25

 77778

 ........

125

 ..................

25

 77824

 .........

93

 ............

10,000

 77825

 .........

93

 ............

10,000

 77834

 .........

97

 ............

10,000

 77835

 .........

97

 ............

10,000

 77844

 ........

100

 .............

8,000

 77845

 ........

100

 .............

8,000

 77847

 ........

105

 .............

1,600 

 77848

 ........

105

 .............

1,600

 77866

 ........

123

 ..................

45

 77867

 ........

123

 ..................

45

 77868

 ........

123

 ..................

45

 77869

 ........

123

 ..................

45

 77870

 ........

123

 ..................

45

 77871

 ........

123

 ..................

45

 77872

 ........

123

 ..................

45

 77874

 .........

95

 ............

10,000

 77875

 .........

95

 ............

10,000

 77884

 .........

98

 ..............

8,000

 77885

 .........

98

 ..............

8,000

 77894

 ........

108

 ................

400

 77906

 ........

124

 ..................

40

 77907

 ........

124

 ..................

40

 77908

 ........

124

 ..................

40

 77909

 ........

124

 ..................

40

 77910

 ........

124

 ..................

40

 77911

 ........

124

 ..................

40

 77912

 ........

124

 ..................

40

 77930

 ........

108

 ................

400

 77932

 ........

108

 ................

400

 77934

 ........

108

 ................

400

 77935

 ........

108

 ................

400

 77936

 ........

108

 ................

400

 P/N 

PAGE  BOX QTY

 P/N 

PAGE  BOX QTY

 P/N 

PAGE  BOX QTY

 P/N 

PAGE  BOX QTY

 P/N 

PAGE  BOX QTY

Magnetics-Powder-Core-Catalog-2020-html.html
background image

www.mag-inc.com

3

Core Locator & Unit Pack Quantity

Index

P/N 

PAGE    BOX QTY

P/N 

PAGE 

BOX QTY

P/N 

PAGE    BOX QTY

 P/N 

PAGE 

BOX QTY

 P/N 

PAGE 

BOX QTY

 P/N 

PAGE 

BOX QTY

 P/N 

PAGE 

BOX QTY

   79051

 ...............

102

 .................

5,000

 79052

 ...............

102

 .................

5,000

 79056

 ...............

102

 .................

5,000

 79057

 ...............

102

 .................

5,000

 79059

 ...............

106

 .................

1,000

 79067

 ...............

121

 ......................

35

 79071

 ...............

109

 ....................

250

 79072

 ...............

121

 ......................

35

 79073

 ...............

121

 ......................

35

 79074

 ...............

121

 ......................

35

 79075

 ...............

121

 ......................

35

 79076

 ...............

111

 ....................

220

 79079

 ...............

114

 ....................

120

 79083

 ...............

112

 ....................

180

 79090

 ...............

114

 ....................

120

 79091

 ...............

114

 ....................

120

 79092

 ...............

114

 ....................

120

 79095

 ...............

114

 ....................

120

 79097

 ...............

126

 ......................

25

 79099

 ...............

126

 ......................

25

 79100

 ...............

126

 ......................

25

 79101

 ...............

126

 ......................

25

 79102

 ...............

126

 ......................

25

 79110

 ...............

118

 ......................

90

 79111

 ...............

118

 ......................

90

 79112

 ...............

118

 ......................

90

 79113

 ...............

103

 .................

2,000

 79121

 ...............

103

 .................

2,000

 79122

 ...............

103

 .................

2,000

 79164

 ...............

128

 ........................

6

 79188

 ...............

119

 ......................

80

 79189

 ...............

119

 ......................

80

 79190

 ...............

119

 ......................

80

 79191

 ...............

119

 ......................

80

 79192

 ...............

119

 ......................

80

 79208

 ...............

105

 .................

1,600

 79212

 ...............

118

 ......................

90

 79215

 ...............

118

 ......................

90

 79226

 ...............

103

 .................

2,000

 79256

 ...............

112

 ....................

180

 79257

 ...............

112

 ....................

180

 79260

 ...............

112

 ....................

180

 79262

 ...............

112

 ....................

180

 79303

 ...............

106

 .................

1,000

 79312

 ...............

106

 .................

1,000

 79316

 ...............

106

 .................

1,000

 79317

 ...............

111

 ....................

220

 79326

 ...............

111

 ....................

220

 79327

 ...............

111

 ....................

220

 79330

 ...............

111

 ....................

220

 79336

 ...............

127

 ......................

16

 79337

 ...............

127

 ......................

16

 79342

 ...............

127

 ......................

16

 79351

 ...............

107

 ....................

720

 79352

 ...............

107

 ....................

720

 79356

 ...............

107

 ....................

720

 79357

 ...............

107

 ....................

720

 79381

 ...............

104

 .................

2,000

 79382

 ...............

104

 .................

2,000

 79386

 ...............

104

 .................

2,000

 79387

 ...............

104

 .................

2,000

 79430

 ...............

115

 ....................

105

 79431

 ...............

115

 ....................

105

 79439

 ...............

115

 ....................

105

 79440

 ...............

115

 ....................

105

 79441

 ...............

115

 ....................

105

 79446

 ...............

113

 ....................

120

 79447

 ...............

113

 ....................

120

 79448

 ...............

113

 ....................

120

 79450

 ...............

113

 ....................

120

 79451

 ...............

113

 ....................

120

 79550

 ...............

109

 ....................

250

 79551

 ...............

109

 ....................

250

 79554

 ...............

109

 ....................

250

 79555

 ...............

109

 ....................

250

 79586

 ...............

110

 ....................

300

 79587

 ...............

110

 ....................

300

 79588

 ...............

110

 ....................

300

 79591

 ...............

110

 ....................

300

 79592

 ...............

110

 ....................

300

 79612

 ...............

120

 ......................

45

 79614

 ...............

120

 ......................

45

 79615

 ...............

120

 ......................

45

 79616

 ...............

120

 ......................

45

 79617

 ...............

120

 ......................

45

 79708

 ...............

117

 ......................

90

 79716

 ...............

117

 ......................

90

 79717

 ...............

117

 ......................

90

 79718

 ...............

117

 ......................

90

 79721

 ...............

117

 ......................

90

 79726

 ...............

116

 ......................

70

 79727

 ...............

116

 ......................

70

 79728

 ...............

116

 ......................

70

 79733

 ...............

116

 ......................

70

 79734

 ...............

122

 ......................

24

 79735

 ...............

122

 ......................

24

 79736

 ...............

122

 ......................

24

 79737

 ...............

122

 ......................

24

 79744

 ...............

122

 ......................

24

 79750

 ...............

116

 ......................

70

 79772

 ...............

125

 ......................

25

 79774

 ...............

125

 ......................

25

 79775

 ...............

125

 ......................

25

 79776

 ...............

125

 ......................

25

 79777

 ...............

125

 ......................

25

 79847

 ...............

105

 .................

1,600

 79848

 ...............

105

 .................

1,600

 79849

 ...............

105

 .................

1,600

 79867

 ...............

123

 ......................

45

 79868

 ...............

123

 ......................

45

 79869

 ...............

123

 ......................

45

 79872

 ...............

123

 ......................

45

 79873

 ...............

123

 ......................

45

 79894

 ...............

108

 ....................

400

 79907

 ...............

124

 ......................

40

 79908

 ...............

124

 ......................

40

 79909

 ...............

124

 ......................

40

 79912

 ...............

124

 ......................

40

 79913

 ...............

124

 ......................

40

 79932

 ...............

108

 ....................

400

 79933

 ...............

108

 ....................

400

 79936

 ...............

108

 ....................

400

 79937

 ...............

108

 ....................

400 

Kool Mµ

®

 MAX Toroids

 P/N 

PAGE 

BOX QTY

 P/N 

PAGE 

BOX QTY

 P/N 

PAGE 

BOX QTY

 P/N 

PAGE 

BOX QTY

 76051

 ...............

102

 .................

5,000

   76052

 ...............

102

 .................

5,000

 76059

 ...............

106

 .................

1,000

 76071

 ...............

109

 ....................

250

 76076

 ...............

111

 ....................

220

 76083

 ...............

112

 ....................

180

 76121

 ...............

103

 .................

2,000

 76122

 ...............

103

 .................

2,000

 76208

 ...............

105

 .................

1,600

 76256

 ...............

112

 ....................

180

 76312

 ...............

106

 ..................

1000

 76326

 ...............

111

 ....................

220

 76351

 ...............

107

 ....................

720

 76352

 ...............

107

 ....................

720

 76381

 ...............

104

 .................

2,000

 76382

 ...............

104

 .................

2,000

 76550

 ...............

109

 ....................

250

 76586

 ...............

110

 ....................

300

   76587

 ...............

110

 ....................

300

 76848

 ...............

105

 .................

1,600

 76894

 ...............

108

 ....................

400

 76932

 ...............

108

 ....................

400

Kool Mµ

®

 Hƒ Toroids

Magnetics-Powder-Core-Catalog-2020-html.html
background image

MAGNETICS

4

Core Locator & Unit Pack Quantity

Index

XF

lux

®

 Toroids

 78050

 ................

102

 ..................

5,000

 78051

 ................

102

 ..................

5,000

 78052

 ................

102

 ..................

5,000

 78054

 ................

102

 ..................

5,000

 78055

 ................

102

 ..................

5,000

 78056

 ................

102

 ..................

5,000

 78057

 ................

102

 ..................

5,000

 78059

 ................

106

 ..................

1,000

 78067

 ................

121

 ........................

35

 78068

 ................

121

 ........................

35

 78069

 ................

121

 ........................

35

 78071

 ................

109

 ......................

250

 78072

 ................

121

 ........................

35

 78073

 ................

121

 ........................

35

 78074

 ................

121

 ........................

35

 78076

 ................

111

 ......................

220

 78079

 ................

114

 ......................

120

 78083

 ................

112

 ......................

180

 78089

 ................

114

 ......................

120

 78090

 ................

114

 ......................

120

 78091

 ................

114

 ......................

120

 78093

 ................

114

 ......................

120

 78094

 ................

114

 ......................

120

 78095

 ................

114

 ......................

120

 78096

 ................

126

 ........................

25

 78097

 ................

126

 ........................

25

 78099

 ................

126

 ........................

25

 78100

 ................

126

 ........................

25

 78102

 ................

126

 ........................

25

 78110

 ................

118

 ........................

90

 78111

 ................

118

 ........................

90

 78113

 ................

103

 ..................

2,000

 78120

 ................

103

 ..................

2,000

 78121

 ................

103

 ..................

2,000

 78122

 ................

103

 ..................

2,000

 78159

 ................

126

 ........................

25

 78163

 ................

128

 ..........................

6

 78165

 ................

128

 ..........................

6

 78170

 ................

129

 ..........................

8

 78171

 ................

129

 ..........................

8

 78188

 ................

119

 ........................

80

 78189

 ................

119

 ........................

80

 78191

 ................

119

 ........................

80

 78192

 ................

119

 ........................

80

 78193

 ................

119

 ........................

80

 78194

 ................

119

 ........................

80

 78195

 ................

119

 ........................

80

 78206

 ................

105

 ..................

1,600

 78208

 ................

105

 ..................

1,600

 78210

 ................

105

 ..................

1,600

 78211

 ................

105

 ..................

1,600

 78212

 ................

118

 ........................

90

 78213

 ................

118

 ........................

90

 78214

 ................

118

 ........................

90

 78215

 ................

118

 ........................

90

 78224

 ................

103

 ..................

2,000

 78225

 ................

103

 ..................

2,000

 78226

 ................

103

 ..................

2,000

 78254

 ................

112

 ......................

180

 78256

 ................

112

 ......................

180

 78258

 ................

112

 ......................

180

 78259

 ................

112

 ......................

180

 78260

 ................

112

 ......................

180

 78262

 ................

112

 ......................

180

 78303

 ................

106

 ..................

1,000

 78310

 ................

106

 ..................

1,000

 78312

 ................

106

 ..................

1,000

 78314

 ................

106

 ..................

1,000

 78315

 ................

106

 ..................

1,000

 78316

 ................

106

 ..................

1,000

 78317

 ................

111

 ......................

220

 78324

 ................

111

 ......................

220

 78326

 ................

111

 ......................

220

 78328

 ................

111

 ......................

220

 78329

 ................

111

 ......................

220

 78330

 ................

111

 ......................

220

 78337

 ................

127

 ........................

16

 78338

 ................

127

 ........................

16

 78342

 ................

127

 ........................

16

 78350

 ................

107

 ......................

720

 78351

 ................

107

 ......................

720

 78352

 ................

107

 ......................

720

 78354

 ................

107

 ......................

720

 78355

 ................

107

 ......................

720

 78356

 ................

107

 ......................

720

 78357

 ................

107

 ......................

720

 78380

 ................

104

 ..................

2,000

 78381

 ................

104

 ..................

2,000

 78382

 ................

104

 ..................

2,000

 78384

 ................

104

 ..................

2,000

 78385

 ................

104

 ..................

2,000

 78386

 ................

104

 ..................

2,000

 78387

 ................

104

 ..................

2,000

 78430

 ................

115

 ......................

105

 78431

 ................

115

 ......................

105

 78438

 ................

115

 ......................

105

 78439

 ................

115

 ......................

105

 78440

 ................

115

 ......................

105

 78442

 ................

115

 ......................

105

 78443

 ................

115

 ......................

105

 78447

 ................

113

 ......................

120

 78448

 ................

113

 ......................

120

 78450

 ................

113

 ......................

120

 78451

 ................

113

 ......................

120

 78452

 ................

113

 ......................

120

 78453

 ................

113

 ......................

120

 78454

 ................

113

 ......................

120

 78548

 ................

109

 ......................

250

 78550

 ................

109

 ......................

250

 78552

 ................

109

 ......................

250

 78553

 ................

109

 ......................

250

 78554

 ................

109

 ......................

250

 78555

 ................

109

 ......................

250

 78585

 ................

110

 ......................

300

 78586

 ................

110

 ......................

300

 78587

 ................

110

 ......................

300

 78589

 ................

110

 ......................

300

 78590

 ................

110

 ......................

300

 78591

 ................

110

 ......................

300

 78592

 ................

110

 ......................

300

 78612

 ................

120

 ........................

45

 78615

 ................

120

 ........................

45

 78616

 ................

120

 ........................

45

 78617

 ................

120

 ........................

45

 78618

 ................

120

 ........................

45

 78619

 ................

120

 ........................

45

 78708

 ................

117

 ........................

90

 78715

 ................

117

 ........................

90

 78716

 ................

117

 ........................

90

 78717

 ................

117

 ........................

90

 78719

 ................

117

 ........................

90

 78720

 ................

117

 ........................

90

 78721

 ................

117

 ........................

90

 78725

 ................

116

 ........................

70

 78726

 ................

116

 ........................

70

 78727

 ................

116

 ........................

70

 78729

 ................

116

 ........................

70

 78730

 ................

116

 ........................

70

 78733

 ................

116

 ........................

70

 78735

 ................

122

 ........................

24

 78736

 ................

122

 ........................

24

 78737

 ................

122

 ........................

24

 78738

 ................

122

 ........................

24

 78739

 ................

122

 ........................

24

 78744

 ................

122

 ........................

24

 78750

 ................

116

 ........................

70

 78772

 ................

125

 ........................

25

 78773

 ................

125

 ........................

25

 78775

 ................

125

 ........................

25

 78776

 ................

125

 ........................

25

 78777

 ................

125

 ........................

25

   78847

 ................

105

 ..................

1,600

 78848

 ................

105

 ..................

1,600

 78849

 ................

105

 ..................

1,600

 78867

 ................

123

 ........................

45

 78868

 ................

123

 ........................

45

 78870

 ................

123

 ........................

45

 78871

 ................

123

 ........................

45

 78872

 ................

123

 ........................

45

 78873

 ................

123

 ........................

45

 78894

 ................

108

 ......................

400

 78907

 ................

124

 ........................

40

 78908

 ................

124

 ........................

40

 78910

 ................

124

 ........................

40

 78911

 ................

124

 ........................

40

 78912

 ................

124

 ........................

80

 78913

 ................

124

 ........................

40

 78930

 ................

108

 ......................

400

 78932

 ................

108

 ......................

400

 78934

 ................

108

 ......................

400

 78935

 ................

108

 ......................

400

 78936

 ................

108

 ......................

400 

 P/N 

PAGE 

BOX QTY

 P/N 

PAGE 

BOX QTY

 P/N 

PAGE 

BOX QTY

 P/N 

PAGE 

BOX QTY

Magnetics-Powder-Core-Catalog-2020-html.html
background image

www.mag-inc.com

5

Core Locator & Unit Pack Quantity

Index

High Flux Toroids

 P/N 

PAGE 

BOX QTY

 P/N 

PAGE 

BOX QTY

 P/N 

PAGE 

BOX QTY

 P/N 

PAGE 

BOX QTY

 59051

 ................

102

 ..................

5,000

 59052

 ................

102

 ..................

5,000

 59059

 ................

106

 ..................

1,000

 59071

 ................

109

 ......................

250

 59076

 ................

111

 ......................

220

 59083

 ................

112

 ......................

180

 59121

 ................

103

 ..................

2,000

 59122

 ................

103

 ..................

2,000

 59208

 ................

105

 ..................

1,600

 59256

 ................

112

 ......................

180

 59312

 ................

106

 ..................

1,000

 59326

 ................

111

 ......................

220

 59351

 ................

107

 ......................

720

 59352

 ................

107

 ......................

720

 59381

 ................

104

 ....................

2000

 59382

 ................

104

 ....................

2000

 59550

 ................

109

 ......................

250

 59586

 ................

110

 ......................

300

Edge

®

 Toroids

 59587

 ................

110

 ......................

300

 59848

 ................

105

 ..................

1,600

 59894

 ................

108

 ......................

400

 59932

 ................

108

 ......................

400

 58018

 ..........

93

 ..........

10,000

 58019

 ..........

93

 ..........

10,000

 58020

 ..........

93

 ..........

10,000

 58021

 ..........

93

 ..........

10,000

 58022

 ..........

93

 ..........

10,000

 58023

 ..........

93

 ..........

10,000

   58028

 ..........

97

 ..........

10,000

 58029

 ..........

97

 ..........

10,000

 58030

 ..........

97

 ..........

10,000

 58031

 ..........

97

 ..........

10,000

 58032

 ..........

97

 ..........

10,000

 58033

 ..........

97

 ..........

10,000

 58038

 .........

100

 ...........

8,000

 58039

 .........

100

 ...........

8,000

 58040

 .........

100

 ...........

8,000

 58041

 .........

100

 ...........

8,000

 58042

 .........

100

 ...........

8,000

 58043

 .........

100

 ...........

8,000

 58048

 .........

102

 ...........

5,000

 58049

 .........

102

 ...........

5,000

 58050

 .........

102

 ...........

5,000

 58051

 .........

102

 ...........

5,000

 58052

 .........

102

 ...........

5,000

 58053

 .........

102

 ...........

5,000

 58059

 .........

106

 ...........

1,000

 58070

 .........

121

 ................

35

 58071

 .........

109

 ..............

250

 58072

 .........

121

 ................

35

 58073

 .........

121

 ................

35

 58074

 .........

121

 ................

35

 58075

 .........

121

 ................

35

 58076

 .........

111

 ..............

220

 58083

 .........

112

 ..............

180

 58088

 .........

114

 ..............

120

 58089

 .........

114

 ..............

120

 58090

 .........

114

 ..............

120

 58091

 .........

114

 ..............

120

 58092

 .........

114

 ..............

120

 58099

 .........

126

 ................

25

 58100

 .........

126

 ................

25

 58101

 .........

126

 ................

25

 58102

 .........

126

 ................

25

 58109

 .........

118

 ................

90

 58110

 .........

118

 ................

90

 58111

 .........

118

 ................

90

 58112

 .........

118

 ................

90

 58118

 .........

103

 ...........

2,000

 58119

 .........

103

 ...........

2,000

 58120

 .........

103

 ...........

2,000

 58121

 .........

103

 ...........

2,000

 58122

 .........

103

 ...........

2,000

 58123

 .........

103

 ...........

2,000

 58128

 .........

101

 ...........

6,000

 58129

 .........

101

 ...........

6,000

 58130

 .........

101

 ...........

6,000

 58131

 .........

101

 ...........

6,000

 58132

 .........

101

 ...........

6,000

 58133

 .........

101

 ...........

6,000

 58164

 .........

128

 ..................

6

 58165

 .........

128

 ..................

6

 58167

 .........

128

 ..................

6

 58190

 .........

119

 ................

80

 58191

 .........

119

 ................

80

 58192

 .........

119

 ................

80

 58195

 .........

119

 ................

80

 58204

 .........

105

 ...........

1,600

 58205

 .........

105

 ...........

1,600

 58206

 .........

105

 ...........

1,600

 58208

 .........

105

 ...........

1,600

 58209

 .........

105

 ...........

1,600

 58238

 ..........

94

 ..........

10,000

 58239

 ..........

94

 ..........

10,000

 58240

 ..........

94

 ..........

10,000

 58241

 ..........

94

 ..........

10,000

 58242

 ..........

94

 ..........

10,000

 58243

 ..........

94

 ..........

10,000

 58252

 .........

112

 ..............

180

 58253

 .........

112

 ..............

180

 58254

 .........

112

 ..............

180

 58256

 .........

112

 ..............

180

 58257

 .........

112

 ..............

180

 58268

 ..........

95

 ..........

10,000

 58269

 ..........

95

 ..........

10,000

 58270

 ..........

95

 ..........

10,000

 58271

 ..........

95

 ..........

10,000

 58272

 ..........

95

 ..........

10,000

 58273

 ..........

95

 ..........

10,000

 58278

 ..........

98

 ............

8,000

 58279

 ..........

98

 ............

8,000

 58280

 ..........

98

 ............

8,000

 58281

 ..........

98

 ............

8,000

 58282

 ..........

98

 ............

8,000

 58283

 ..........

98

 ............

8,000

 58288

 ..........

99

 ............

8,000

 58289

 ..........

99

 ............

8,000

 58290

 ..........

99

 ............

8,000

 58291

 ..........

99

 ............

8,000

 58292

 ..........

99

 ............

8,000

 58293

 ..........

99

 ............

8,000

 58308

 .........

106

 ...........

1,000

   58309

 .........

106

 ...........

1,000

 58310

 .........

106

 ...........

1,000

 58312

 .........

106

 ...........

1,000

 58313

 .........

106

 ...........

1,000

 58322

 .........

111

 ..............

220

 58323

 .........

111

 ..............

220

 58324

 .........

111

 ..............

220

 58326

 .........

111

 ..............

220

 58327

 .........

111

 ..............

220

 58336

 .........

127

 ................

16

 58337

 .........

127

 ................

16

 58338

 .........

127

 ................

16

 58339

 .........

127

 ................

16

 58348

 .........

107

 ..............

720

 58349

 .........

107

 ..............

720

 58350

 .........

107

 ..............

720

 58351

 .........

107

 ..............

720

 58352

 .........

107

 ..............

720

 58353

 .........

107

 ..............

720

 58378

 .........

104

 ...........

2,000

 58379

 .........

104

 ...........

2,000

 58380

 .........

104

 ...........

2,000

 58381

 .........

104

 ...........

2,000

 58382

 .........

104

 ...........

2,000

 58383

 .........

104

 ...........

2,000

 58408

 ..........

96

 ..........

10,000

 58409

 ..........

96

 ..........

10,000

 58410

 ..........

96

 ..........

10,000

 58411

 ..........

96

 ..........

10,000

 58412

 ..........

96

 ..........

10,000

 58413

 ..........

96

 ..........

10,000

 58437

 .........

115

 ..............

105

 58438

 .........

115

 ..............

105

 58439

 .........

115

 ..............

105

 58440

 .........

115

 ..............

105

 58441

 .........

115

 ..............

105

 58446

 .........

113

 ..............

120

 58448

 .........

113

 ..............

120

 58451

 .........

113

 ..............

120

 58454

 .........

113

 ..............

120

 58455

 .........

113

 ..............

120

 58456

 .........

113

 ..............

120

 58546

 .........

109

 ..............

250

 58547

 .........

109

 ..............

250

 58548

 .........

109

 ..............

250

 58550

 .........

109

 ..............

250

 58551

 .........

109

 ..............

250

 58583

 .........

110

 ..............

300

 58584

 .........

110

 ..............

300

 58585

 .........

110

 ..............

300

 58586

 .........

110

 ..............

300

 58587

 .........

110

 ..............

300

 58588

 .........

110

 ..............

300

 58614

 .........

120

 ................

45

 58615

 .........

120

 ................

45

 58616

 .........

120

 ................

45

 58617

 .........

120

 ................

45

 58620

 .........

120

 ................

45

 58714

 .........

117

 ................

90

 58715

 .........

117

 ................

90

 58716

 .........

117

 ................

90

 58717

 .........

117

 ................

90

 58718

 .........

117

 ................

90

 58725

 .........

116

 ................

70

 58726

 .........

116

 ................

70

 58727

 .........

116

 ................

70

 58728

 .........

116

 ................

70

 58734

 .........

122

 ................

24

 58735

 .........

122

 ................

24

 58736

 .........

122

 ................

24

 58737

 .........

122

 ................

24

 58740

 .........

122

 ................

24

 58774

 .........

125

 ................

25

 58775

 .........

125

 ................

25

 58776

 .........

125

 ................

25

 58777

 .........

125

 ................

25

 58778

 .........

125

 ................

25 

 58848

 .........

105

 ...........

1,600

 58866

 .........

123

 ................

45

 58867

 .........

123

 ................

45

 58868

 .........

123

 ................

45

 58869

 .........

123

 ................

45

 58894

 .........

108

 ..............

400

 58906

 .........

124

 ................

40

 58907

 .........

124

 ................

40

 58908

 .........

124

 ................

40

 58909

 .........

124

 ................

40

   58928

 .........

108

 ..............

400

 58929

 .........

108

 ..............

400

 58930

 .........

108

 ..............

400

 58932

 .........

108

 ..............

400

 58933

 .........

108

 ..............

400

 P/N 

PAGE  BOX QTY

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 P/N 

PAGE  BOX QTY

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 P/N 

PAGE  BOX QTY

Magnetics-Powder-Core-Catalog-2020-html.html
background image

MAGNETICS

Core Locator & Unit Pack Quantity

Index

MPP Toroids

6

 55014

 ...................

93

..............

10,000

 55015

 ...................

93

..............

10,000

 55016

 ...................

93

..............

10,000

 55017

 ...................

93

..............

10,000

 55018

 ...................

93

..............

10,000

 55019

 ...................

93

..............

10,000

 55020

 ...................

93

..............

10,000

 55021

 ...................

93

..............

10,000

 55022

 ...................

93

..............

10,000

 55023

 ...................

93

..............

10,000

 55024

 ...................

97

..............

10,000

 55025

 ...................

97

..............

10,000

 55026

 ...................

97

..............

10,000

 55027

 ...................

97

..............

10,000

 55028

 ...................

97

..............

10,000

 55029

 ...................

97

..............

10,000

 55030

 ...................

97

..............

10,000

 55031

 ...................

97

..............

10,000 

 55032

 ...................

97

..............

10,000

 55033

 ...................

97

..............

10,000

 55034

 ..................

100

 ..............

8,000

 55035

 ..................

100

 ..............

8,000

 55036

 ..................

100

 ..............

5,000

 55037

 ..................

100

 ..............

8,000

 55038

 ..................

100

 ..............

8,000

 55039

 ..................

100

 ..............

8,000

 55040

 ..................

100

 ..............

8,000

 55041

 ..................

100

 ..............

8,000

 55042

 ..................

100

 ..............

8,000

 55043

 ..................

100

 ..............

8,000

 55044

 ..................

102

 ..............

5,000

 55045

 ..................

102

 ..............

5,000

 55046

 ..................

102

 ..............

5,000

 55047

 ..................

102

 ..............

5,000

 55048

 ..................

102

 ..............

5,000

 55049

 ..................

102

 ..............

5,000

 55050

 ..................

102

 ..............

5,000

 55051

 ..................

102

 ..............

5,000

 55052

 ..................

102

 ..............

5,000

 55053

 ..................

102

 ..............

5,000

 55059

 ..................

106

 ..............

1,000

 55070

 ..................

121

 ...................

35

 55071

 ..................

109

 .................

250

 55072

 ..................

121

 ...................

35

 55074

 ..................

121

 ...................

35 

 55075

 ..................

121

 ...................

35

 55076

 ..................

111

 .................

220

 55082

 ..................

114

 .................

120

 55083

 ..................

112

 .................

180

 55084

 ..................

114

 .................

120

 55086

 ..................

114

 .................

120

 55087

 ..................

114

 .................

120

 55088

 ..................

114

 .................

120

 55089

 ..................

114

 .................

120

 55090

 ..................

114

 .................

120

 55091

 ..................

114

 .................

120

 55092

 ..................

114

 .................

120

 55098

 ..................

126

 ...................

25

 55099

 ..................

126

 ...................

25

 55101

 ..................

126

 ...................

25

 55102

 ..................

126

 ...................

25

 55103

 ..................

118

 ...................

90

 55104

 ..................

118

 ...................

90

 55106

 ..................

118

 ...................

90

 55107

 ..................

118

 ...................

90

 55108

 ..................

118

 ...................

90

 55109

 ..................

118

 ...................

90

 55110

 ..................

118

 ...................

90

 55111

 ..................

118

 ...................

90

 55112

 ..................

118

 ...................

90

 55114

 ..................

103

 ..............

2,000

 55115

 ..................

103

 ..............

2,000

 55116

 ..................

103

 ..............

2,000

 55117

 ..................

103

 ..............

2,000

 55118

 ..................

103

 ..............

2,000

 55119

 ..................

103

 ..............

2,000

 55120

 ..................

103

 ..............

2,000

 55121

 ..................

103

 ..............

2,000

 55122

 ..................

103

 ..............

2,000

 55123

 ..................

103

 ..............

2,000

 55124

 ..................

101

 ..............

6,000

 55125

 ..................

101

 ..............

6,000

 55127

 ..................

101

 ..............

6,000

 55128

 ..................

101

 ..............

6,000

 55129

 ..................

101

 ..............

6,000

 55130

 ..................

101

 ..............

6,000

 55131

 ..................

101

 ..............

6,000

 55132

 ..................

101

 ..............

6,000

 55133

 ..................

101

 ..............

6,000

 55134

 ...................

90

................

1,500

 55135

 ...................

90

................

1,500

 55137

 ...................

90

................

1,500

 55138

 ...................

90

................

1,500

 55139

 ...................

90

................

1,500

 55140

 ...................

90

................

1,500

 55144

 ...................

91

...................

750  

 55145

 ...................

91

...................

750

 55147

 ...................

91

...................

750

 55148

 ...................

91

...................

750

 55149

 ...................

91

...................

750  

 55150

 ...................

91

...................

750

 55164

 ..................

128

 ......................

6

 55165

 ..................

128

 ......................

6

 55167

 ..................

128

 ......................

6

 55174

 ...................

92

...................

500

 55175

 ...................

92

...................

500

 55177

 ...................

92

...................

500

 55178

 ...................

92

...................

500  

 55179

 ...................

92

...................

500

 55180

 ...................

92

...................

500

 55181

 ...................

92

...................

500

 55190

 ..................

119

 ...................

80

 55191

 ..................

119

 ...................

80

 55192

 ..................

119

 ...................

80

 55195

 ..................

119

 ...................

80

 55196

 ..................

119

 ...................

80

 55197

 ..................

119

 ...................

80

 55198

 ..................

119

 ...................

80

 55199

 ..................

119

 ...................

80

 55200

 ..................

105

 ..............

1,600

 55201

 ..................

105

 ..............

1,600

 55202

 ..................

105

 ..............

1,600

 55203

 ..................

105

 ..............

1,600

 55204

 ..................

105

 ..............

1,600

 55205

 ..................

105

 ..............

1,600

 55206

 ..................

105

 ..............

1,600

 55208

 ..................

105

 ..............

1,600

 55209

 ..................

105

 ..............

1,600

 55234

 ...................

94

..............

10,000

 55235

 ...................

94

..............

10,000 

 55236

 ...................

94

..............

10,000

 55237

 ...................

94

..............

10,000

 55238

 ...................

94

..............

10,000

 55239

 ...................

94

..............

10,000

 55240

 ...................

94

..............

10,000

 55241

 ...................

94

..............

10,000

 55242

 ...................

94

..............

10,000

 55243

 ...................

94

..............

10,000

 55248

 ..................

112

 .................

180

 55249

 ..................

112

 .................

180

 55250

 ..................

112

 .................

180

 55251

 ..................

112

 .................

180

 55252

 ..................

112

 .................

180

 55253

 ..................

112

 .................

180

 55254

 ..................

112

 .................

180

 55256

 ..................

112

 .................

180

 55257

 ..................

112

 .................

180

 55264

 ...................

95

..............

10,000

 55265

 ...................

95

..............

10,000

 55266

 ...................

95

..............

10,000

 55267

 ...................

95

..............

10,000

 55268

 ...................

95

..............

10,000

 55269

 ...................

95

..............

10,000

 55270

 ...................

95

..............

10,000

 55271

 ...................

95

..............

10,000

 55272

 ...................

95

..............

10,000

 55273

 ...................

95

..............

10,000

 55274

 ...................

98

................

8,000

 55275

 ...................

98

................

8,000

 55276

 ...................

98

................

8,000 

 55277

 ...................

98

................

8,000

 55278

 ...................

98

................

8,000

 55279

 ...................

98

................

8,000

 55280

 ...................

98

................

8,000

 55281

 ...................

98

................

8,000

 55282

 ...................

98

................

8,000

 55283

 ...................

98

................

8,000

 55284

 ...................

99

................

8,000

 55285

 ...................

99

................

8,000

 55286

 ...................

99

................

8,000

 55287

 ...................

99

................

8,000

 55288

 ...................

99

................

8,000

 55289

 ...................

99

................

8,000

 55290

 ...................

99

................

8,000

 55291

 ...................

99

................

8,000

 55292

 ...................

99

................

8,000

 55293

 ...................

99

................

8,000

 55304

 ..................

106

 ..............

1,000

 55305

 ..................

106

 ..............

1,000

 55306

 ..................

106

 ..............

1,000

 55307

 ..................

106

 ..............

1,000

 55308

 ..................

106

 ..............

1,000

 55309

 ..................

106

 ..............

1,000

 55310

 ..................

106

 ..............

1,000

 55312

 ..................

106

 ..............

1,000 

 55313

 ..................

106

 ..............

1,000

 55318

 ..................

111

 .................

220

 55319

 ..................

111

 .................

220

 55320

 ..................

111

 .................

220

 55321

 ..................

111

 .................

220

 55322

 ..................

111

 .................

220

 55323

 ..................

111

 .................

220

 55324

 ..................

111

 .................

220

 55326

 ..................

111

 .................

220

 55327

 ..................

111

 .................

220

 55336

 ..................

127

 ...................

16

 55337

 ..................

127

 ...................

16

 55339

 ..................

127

 ...................

16

 55340

 ..................

127

 ...................

16

 55341

 ..................

127

 ...................

16

 55344

 ..................

107

 .................

720

 55345

 ..................

107

 .................

720

 55347

 ..................

107

 .................

720

 55348

 ..................

107

 .................

720

 55349

 ..................

107

 .................

720

 55350

 ..................

107

 .................

720

 55351

 ..................

107

 .................

720

 55352

 ..................

107

 .................

720

 55353

 ..................

107

 .................

720     

 55374

 ..................

104

 ..............

2,000

 55375

 ..................

104

 ..............

2,000

 55377

 ..................

104

 ..............

2,000

 55378

 ..................

104

 ..............

2,000

 55379

 ..................

104

 ..............

2,000

 55380

 ..................

104

 ..............

2,000

 55381

 ..................

104

 ..............

2,000

 55382

 ..................

104

 ..............

2,000

 55383

 ..................

104

 ..............

2,000

 55404

 ...................

96

..............

10,000

 55405

 ...................

96

..............

10,000

 55407

 ...................

96

..............

10,000

 55408

 ...................

96

..............

10,000

 55409

 ...................

96

..............

10,000

 55410

 ...................

96

..............

10,000

 55411

 ...................

96

..............

10,000

 55412

 ...................

96

..............

10,000

 55413

 ...................

96

..............

10,000

 55432

 ..................

115

 .................

105

P/N 

PAGE  BOX QTY

P/N 

PAGE  BOX QTY

P/N 

PAGE  BOX QTY

P/N 

PAGE  BOX QTY

Magnetics-Powder-Core-Catalog-2020-html.html
background image

www.mag-inc.com

7

Core Locator & Unit Pack Quantity

Index

MPP Toroids

Kool Mµ

®

 E Cores, U Cores and Blocks

 K114LE026

 ...........

130

 .....................

18

 K114LE040

 ...........

130

 .....................

18

 K114LE060

 ...........

130

 .....................

18

 K130LE026

 ...........

130

 .....................

16

 K160LE026

 ...........

130

 .....................

16

 K1808E026

 ..........

130

 ................

2,880

 K1808E040

 ..........

130

 ................

2,880

 K1808E060

 ..........

130

 ................

2,880

 K1808E090

 ..........

130

 ................

2,880

 K2510E026

 ..........

130

 ................

1,728

 K2510E040

 ..........

130

 ................

1,728

 K2510E060

 ..........

130

 ................

1,728

 K2510E090

 ..........

130

 ................

1,728

 K3007E026

 ..........

130

 ...................

720

 K3007E040

 ..........

130

 ...................

720

 K3007E060

 ..........

130

 ...................

720

 K3007E090

 ..........

130

 ...................

720

 K3112U040

 ..........

132

 ...................

672

 K3112U060

 ..........

132

 ...................

672

 K3112U090

 ..........

132

 ...................

672

 K3515E026

 ..........

130

 ...................

720

 K3515E040

 ..........

130

 ...................

720

 K3515E060

 ..........

130

 ...................

720

 K3515E090

 ..........

130

 ...................

720

 K4017E026

 ..........

130

 ...................

264

 K4017E040

 ..........

130

 ...................

264

 K4017E060

 ..........

130

 ...................

264

 K4017E090

 ..........

130

 ...................

264

 K4020E026

 ..........

130

 ...................

192

 K4020E040

 ..........

130

 ...................

192

 K4020E060

 ..........

130

 ...................

192

 K4020E090

 ..........

130

 ...................

192

 K4022E026

 ..........

130

 ...................

168

 K4022E040

 ..........

130

 ...................

168

 K4022E060

 ..........

130

 ...................

168

 K4022E090

 ..........

130

 ...................

168

 K4110U040

 ..........

132

 ...................

480

 K4110U060

 ..........

132

 ...................

480

 K4110U090

 ..........

132

 ...................

480

 K4111U040

 ..........

132

 ...................

480

 K4111U060

 ..........

132

 ...................

480

 K4111U090

 ..........

132

 ...................

480

 K4119U040

 ..........

132

 ...................

240

 K4119U060

 ..........

132

 ...................

240

 K4119U090

 ..........

132

 ...................

240

 K4317E026

 ..........

130

 ...................

270

 K4317E040

 ..........

130

 ...................

270

 K4317E060

 ..........

130

 ...................

270

 K4317E090

 ..........

130

 ...................

270

 K4741B026

 ..........

131

 .....................

48

 K4741B040

 ..........

131

 .....................

48

 K4741B060

 ..........

131

 .....................

48

 K5030B026

 ..........

131

 .....................

64

 K5030B040

 ..........

131

 .....................

64

 K5030B060

 ..........

131

 .....................

64

 K5527U026

 ..........

132

 ...................

128

 K5527U040

 ..........

132

 ...................

128

 K5527U060

 ..........

132

 ...................

128

 K5528B026

 ..........

131

 .....................

64

 K5528B040

 ..........

131

 .....................

64

 K5528B060

 ..........

131

 .....................

64

 K5528E026

 ..........

130

 .....................

64

 K5528E040

 ..........

130

 .....................

64

 K5528E060

 ..........

130 

 ....................

64

 K5528E090

 ..........

130

 .....................

64

 K5529U026

 ..........

132

 .....................

96

 K5529U040

 ..........

132

 .....................

96

 K5529U060

 ..........

132

 .....................

96

 K5530E026

 ..........

130

 .....................

96

 K5530E040

 ..........

130

 .....................

96

 K5530E060

 ..........

130

 .....................

96

 K5530E090

 ..........

130

 .....................

96

 K6030B026

 ..........

131

 .....................

80

 K6030B040

 ..........

131

 .....................

80

 K6030B060

 ..........

131

 .....................

80

 K6131B026

 ..........

131

 .....................

80

 K6131B040

 ..........

131

 .....................

80

 K6131B060

 ..........

131

 .....................

80

 K6527E026

 ..........

130

 .....................

54

 K6527E040

 ..........

130

 .....................

54

 K6527E060

 ..........

130

 .....................

54

 K6527U026

 ..........

132

 .....................

54

 K6527U040

 ..........

132

 .....................

54

 K6527U060

 ..........

132

 .....................

54

 K6533U026

 ..........

132

 .....................

54

 K6533U040

 ..........

132

 .....................

54

 K6533U060

 ..........

132

 .....................

54

 K7020B026

 ..........

131

 .....................

90

 K7020B040

 ..........

131

 .....................

90

 K7020B060

 ..........

131

 .....................

90

 K7030B026

 ..........

131

 .....................

60

 K7030B040

 ..........

131

 .....................

60

 K7030B060

 ..........

131

 .....................

60

 K7228E026

 ..........

130

 .....................

84

 K7228E040

 ..........

130

 .....................

84

 K7228E060

 ..........

130

 .....................

84

 K7236U026

 ..........

132

 .....................

60

 K7236U040

 ..........

132

 .....................

60

 K7236U060

 ..........

132

 .....................

60

 K8020E026

 ..........

130

 .....................

63

 K8020E040

 ..........

130

 .....................

63

 K8020E060

 ..........

130

 .....................

63

 K8020U026

 ..........

132

 .....................

63

 K8020U040

 ..........

132

 .....................

63

 K8020U060

 ..........

132

 .....................

63

 K8024E026

 ..........

130

 .....................

45

 K8024E040

 ..........

130

 .....................

45

 K8024E060

 ..........

130

 .....................

45

 K8030B026

 ..........

131

 .....................

48

 K8030B040

 ..........

131

 .....................

48

 K8030B060

 ..........

131

 .....................

48

 K8038U026

 ..........

132

 .....................

63

 K8038U040

 ..........

132

 .....................

63

 K8038U060

 ..........

132

 .....................

63

 K8044E026

 ..........

130

 .....................

63

 K8044E040

 ..........

130

 .....................

63

 K8044E060

 ..........

130

 .....................

63

 K9541B026

 ..........

131

 .....................

30

 K9541B040

 ..........

131

 .....................

30

 K9541B060

 ..........

131

 .....................

30

 55433

 ..................

115

 .................

105

 55435

 ..................

115

 .................

105

 55436

 ..................

115

 .................

105

 55437

 ..................

115

 .................

105

 55438

 ..................

115

 .................

105

 55439

 ..................

115

 .................

105

 55440

 ..................

115

 .................

105

 55441

 ..................

115

 .................

105

 55446

 ..................

113

 .................

120

 55448

 ..................

113

 .................

120

 55451

 ..................

113

 .................

120

 55454

 ..................

113

 .................

120

 55455

 ..................

113

 .................

120

 55456

 ..................

113

 .................

120

 55457

 ..................

113

 .................

120

 55458

 ..................

113

 .................

120

 55459

 ..................

113

 .................

120

 55542

 ..................

109

 .................

250

 55543

 ..................

109

 .................

250

 55544

 ..................

109

 .................

250

 55545

 ..................

109

 .................

250

 P/N 

PAGE  BOX QTY

 P/N 

PAGE  BOX QTY

 P/N 

PAGE  BOX QTY

 P/N 

PAGE  BOX QTY

 P/N 

PAGE  BOX QTY

 P/N 

PAGE  BOX QTY

 P/N 

PAGE  BOX QTY

 P/N 

PAGE  BOX QTY

 55546

 ..................

109

 .................

250

 55547

 ..................

109

 .................

250

 55548

 ..................

109

 .................

250

 55550

 ..................

109

 .................

250

 55551

 ..................

109

 .................

250

 55579

 ..................

110

 .................

300

 55580

 ..................

110

 .................

300

 55581

 ..................

110

 .................

300

 55582

 ..................

110

 .................

300

 55583

 ..................

110

 .................

300

 55584

 ..................

110

 .................

300

 55585

 ..................

110

 .................

300

 55586

 ..................

110

 .................

300

 55587

 ..................

110

 .................

300

 55588

 ..................

110

 .................

300

 55614

 ..................

120

 ...................

45  

 55615

 ..................

120

 ...................

45

 55617

 ..................

120

 ...................

45

 55620

 ..................

120

 ...................

45

 55709

 ..................

117

 ...................

90  

 55710

 ..................

117

 ...................

90

 55712

 ..................

117

 ...................

90

 55713

 ..................

117

 ...................

90

 55714

 ..................

117

 ...................

90  

 55715

 ..................

117

 ...................

90

 55716

 ..................

117

 ...................

90

 55717

 ..................

117

 ...................

90

 55718

 ..................

117

 ...................

90

 55725

 ..................

116

 ...................

70 

 55726

 ..................

116

 ...................

70

 55727

 ..................

116

 ...................

70 

 55728

 ..................

116

 ...................

70 

 55734

 ..................

122

 ...................

24

 55735

 ..................

122

 ...................

24

 55737

 ..................

122

 ...................

24

 55740

 ..................

122

 ...................

24

 55774

 ..................

125

 ...................

25

 55775

 ..................

125

 ...................

25

 55777

 ..................

125

 ...................

25

 55778

 ..................

125

 ...................

25  

 55848

 ..................

105

 ..............

1,600

 55866

 ..................

123

 ...................

45

 55867

 ..................

123

 ...................

45 

 55868

 ..................

123

 ...................

45

 55869

 ..................

123

 ...................

45

 55894

 ..................

108

 .................

400

 55906

 ..................

124

 ...................

40

 55907

 ..................

124

 ...................

40

 55908

 ..................

124

 ...................

40

 55909

 ..................

124

 ...................

40

 55924

 ..................

108

 .................

400 

 55925

 ..................

108

 .................

400

 55926

 ..................

108

 .................

400

 55927

 ..................

108

 .................

400

 55928

 ..................

108

 .................

400

 55929

 ..................

108

 .................

400

 55930

 ..................

108

 .................

400

 55932

 ..................

108

 .................

400

 55933

 ..................

108

 .................

400

Magnetics-Powder-Core-Catalog-2020-html.html
background image

MAGNETICS

8

Index

 X114LE026

 ............

130

 .....................

18

 X114LE040

 ............

130

 .....................

18

 X114LE060

 ............

130

 .....................

18

 X1808E026

 ...........

130

 ...............

2,880

 X1808E040

 ...........

130

 ...............

2,880

 X1808E060

 ...........

130

 ...............

2,880

 X2510E026

 ...........

130

 ...............

1,728

 X2510E040

 ...........

130

 ...............

1,728

 X2510E060

 ...........

130

 ...............

1,728

 X3007E026

 ...........

130

 ...................

720

 X3007E040

 ...........

130

 ...................

720

 X3007E060

 ...........

130

 ...................

720

 X3112U026

...........

132

 ...................

672

 X3112U040

...........

132

 ...................

672

 X3112U060

...........

132

 ...................

672

 X3515E026

 ...........

130

 ...................

720

 X3515E040

 ...........

130

 ...................

720

 X3515E060

 ...........

130

 ...................

720

 X4017E026

 ...........

130

 ...................

264

 X4017E040

 ...........

130

 ...................

264

 X4017E060

 ...........

130

 ...................

264

 X4020E026

 ...........

130

 ...................

192

 X4020E040

 ...........

130

 ...................

192

 X4020E060

 ...........

130

 ...................

192

 X4022E026

 ...........

130

 ...................

168

 X4022E040

 ...........

130

 ...................

168

 X4022E060

 ...........

130

 ...................

168

 X4110U026

...........

132

 ...................

480

 X4110U040

...........

132

 ...................

480

 X4110U060

...........

132

 ...................

480

 X4111U026

...........

132

 ...................

480

 X4111U040

...........

132

 ...................

480

 X4111U060

...........

132

 ...................

480

 X4119U026

...........

132

 ...................

240

 X4119U040

...........

132

 ...................

240

 X4119U060

...........

132

 ...................

240

 X4317E026

 ...........

130

 ...................

270

 X4317E040

 ...........

130

 ...................

270

 X4317E060

 ...........

130

 ...................

270

 X4741B026

 ...........

131

 .....................

48

 X4741B040

 ...........

131

 .....................

48

 X4741B060

 ...........

131

 .....................

48

 X5030B026

 ...........

131

 .....................

64

 X5030B040

 ...........

131

 .....................

64

 X5030B060

 ...........

131

 .....................

64

 X5527U026

...........

132

 ...................

128

 X5527U040

...........

132

 ...................

128

 X5527U060

...........

132

 ...................

128

 X5528B026

 ...........

131

 .....................

64

 X5528B040

 ...........

131

 .....................

64

 X5528B060

 ...........

131

 .....................

64

 X5528E026

 ...........

130

 ...................

112

 X5528E040

 ...........

130

 ...................

112

 X5528E060

 ...........

130

 ...................

112

 X5529U026

...........

132

 .....................

96

 X5529U040

...........

132

 .....................

96

 X5529U060

...........

132

 .....................

96

 X5530E026

 ...........

130

 .....................

96

 X5530E040

 ...........

130

 .....................

96

 X5530E060

 ...........

130

 .....................

96

 X6030B026

 ...........

131

 .....................

80

 X6030B040

 ...........

131

 .....................

80

 X6030B060

 ...........

131

 .....................

80

 X6131B026

 ...........

131

 .....................

80

 X6131B040

 ...........

131

 .....................

80

 X6131B060

 ...........

131

 .....................

80

 X6527E026

 ...........

130

 .....................

56

 X6527E040

 ...........

130

 .....................

56

 X6527E060

 ...........

130

 .....................

56

 X6527U026

...........

132

 .....................

56

 X6527U040

...........

132

 .....................

56

 X6527U060

...........

132

 .....................

56

 X6533U026

...........

132

 .....................

54

 X6533U040

...........

132

 .....................

54

 X6533U060

...........

132

 .....................

54

 X7020B026

 ...........

131

 .....................

90

 X7020B040

 ...........

131

 .....................

90

 X7020B060

 ...........

131

 .....................

90

 X7030B026

 ...........

131

 .....................

60

 X7030B040

 ...........

131

 .....................

60

 X7030B060

 ...........

131

 .....................

60

 X7228E026

 ...........

130

 .....................

84

 X7228E040

 ...........

130

 .....................

84

 X7228E060

 ...........

130

 .....................

84

 X7236U026

...........

132

 .....................

60

 X7236U040

...........

132

 .....................

60

 X7236U060

...........

132

 .....................

60

 X8020E026

 ...........

130

 .....................

63

 X8020E040

 ...........

130

 .....................

63

 X8020E060

 ...........

130

 .....................

63

 X8020U026

...........

132

 .....................

63

 X8020U040

...........

132

 .....................

63

 X8020U060

...........

132

 .....................

63

 X8024E026

 ...........

130

 .....................

45

 X8024E040

 ...........

130

 .....................

45

 X8024E060

 ...........

130

 .....................

45

 X8030B026

 ...........

131

 .....................

48

 X8030B040

 ...........

131

 .....................

48

 X8030B060

 ...........

131

 .....................

48

 X8038U026

...........

132

 .....................

63

 X8038U040

...........

132

 .....................

63

 X8038U060

...........

132

 .....................

63

 X8044E026

 ...........

130

 .....................

63

 X8044E040

 ...........

130

 .....................

63

 X8044E060

 ...........

130

 .....................

63

XF

lux

®

 E Cores, U Cores and Blocks

Core Locator & Unit Pack Quantity

 LPK2314E026L087

........

133

 ...........

630

 LPK2314E040L087

........

133

 ...........

630

 LPK2314E060L087

........

133

 ...........

630

 LPK2314E075L087

........

133

 ...........

630

 LPK2518E026L099

........

133

 ...........

588

 LPK2518E040L099

........

133

 ...........

588

 LPK2518E060L099

........

133

 ...........

588

 LPK2518E075L099

........

133

 ...........

588

 EQK2619E026L101

 .......

133

 ...........

462

 EQK2619E040L101

 .......

133

 ...........

462

 EQK2619E060L101

 .......

133

 ...........

462

 LPX2314E026L087

........

133

 ...........

630

 LPX2314E040L087

........

133

 ...........

630

 LPX2314E060L087

........

133

 ...........

630

 LPX2314E075L087

........

133

 ...........

630

 LPX2518E026L099

........

133

 ...........

588

 LPX2518E040L099

........

133

 ...........

588

 LPX2518E060L099

........

133

 ...........

588

 LPX2518E075L099

........

133

 ...........

588

 EQX2619E026L101

 .......

133

 ...........

462

 EQX2619E040L101

 .......

133

 ...........

462

 EQX2619E060L101

 .......

133

 ...........

462

 EQX2619E075L101

 .......

133

 ...........

462

 

EQK2619E075L101

 .......

133

 ...........

462

 EQK2619E026L124

 .......

133

 ...........

420

 EQK2619E040L124

 .......

133

 ...........

420

 EQK2619E060L124

 .......

133

 ...........

420

 EQK2619E075L124

 .......

133

 ...........

420

 EQK3222E026L101

 .......

133

 ...........

360

 EQK3222E040L101

 .......

133

 ...........

360

 EQK3222E060L101

 .......

133

 ...........

360

 EQK3222E075L101

 .......

133

 ...........

360

 EQK3222E026L152

 .......

133

 ...........

300

 EQK3222E040L152

 .......

133

 ...........

300

 EQX2619E026L124

 .......

133

 ...........

420

 EQX2619E040L124

 .......

133

 ...........

420

 EQX2619E060L124

 .......

133

 ...........

420

 EQX2619E075L124

 .......

133

 ...........

420

 EQX3222E026L101

 .......

133

 ...........

360

 EQX3222E040L101

 .......

133

 ...........

360

 EQX3222E060L101

 .......

133

 ...........

360

 EQX3222E075L101

 .......

133

 ...........

360

 EQX3222E026L152

 .......

133

 ...........

300

 EQX3222E040L152

 .......

133

 ...........

300

 EQX3222E060L152

 .......

133

 ...........

300

 EQX3222E075L152

 .......

133

 ...........

300

 EQK3222E060L152

 .......

133

 ...........

300

 EQK3222E075L152

 .......

133

 ...........

300

 EQK3626E026L174

 .......

133

 ...........

240

 EQK3626E040L174

 .......

133

 ...........

240

 EQK3626E060L174

 .......

133

 ...........

240

 EQK3626E075L174

 .......

133

 ...........

240

 EQK4128E026L199

 .......

133

 ...........

160

 EQK4128E040L199

 .......

133

 ...........

160

 EQK4128E060L199

 .......

133

 ...........

160

 EQK4128E075L199

 .......

133

 ...........

260

 LPK4225E026L123

........

133

 ...........

180

 EQX3626E026L174

 .......

133

 ...........

240

 EQX3626E040L174

 .......

133

 ...........

240

 EQX3626E060L174

 .......

133

 ...........

240

 EQX3626E075L174

 .......

133

 ...........

240

 EQX4128E026L199

 .......

133

 ...........

160

 EQX4128E040L199

 .......

133

 ...........

160

 EQX4128E060L199

 .......

133

 ...........

160

 EQX4128E075L199

 .......

133

 ...........

160

 LPX4225E026L123

........

133

 ...........

180

 LPX4225E040L123

........

133

 ...........

180

 LPX4225E060L123

........

133

 ...........

180

 LPX4225E075L123

........

133

 ...........

180

 LPK4225E040L123

........

133

 ...........

180

 LPK4225E060L123

........

133

 ...........

180

 LPK4225E075L123

........

133

 ...........

180

 LPK4225E026L158

........

133

 ...........

180

 LPK4225E040L158

........

133

 ...........

180

 LPK4225E060L158

........

133

 ...........

180

 LPK4225E075L158

........

133

 ...........

180

 EQK5032E026L250

 .......

133

 .............

96

 EQK5032E040L250

 .......

133

 .............

96

 EQK5032E060L250

 .......

133

 .............

96

 EQK5032E075L250

 .......

133

 .............

96

 LPX4225E026L158

........

133

 ...........

180

 LPX4225E040L158

........

133

 ...........

180

 LPX4225E060L158

........

133

 ...........

180

 LPX4225E075L158

........

133

 ...........

180

 EQX5032E026L250

 .......

133

 .............

96

 EQX5032E040L250

 .......

133

 .............

96

 EQX5032E060L250

 .......

133

 .............

96

 EQX5032E075L250

 .......

133

 .............

96

Kool Mµ

®

 EQ Cores and LP Cores

XF

lux

®

 EQ Cores and LP Cores

 P/N 

PAGE  BOX QTY

 P/N 

             PG   BOX QTY

 P/N 

             PG   BOX QTY

 P/N 

PAGE  BOX QTY

 P/N 

             PG   BOX QTY

 P/N 

             PG   BOX QTY

 P/N 

PAGE  BOX QTY

 P/N 

             PG   BOX QTY

 P/N 

             PG   BOX QTY

 P/N 

PAGE  BOX QTY

 P/N 

             PG   BOX QTY

 P/N 

             PG   BOX QTY

Magnetics-Powder-Core-Catalog-2020-html.html
background image

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9

Index

Core Locator & Unit Pack Quantity

 LPH2314E026L087

 .......

133

 ...........

630

 LPH2314E040L087

 .......

133

 ...........

630

 LPH2314E060L087

 .......

133

 ...........

630

 LPH2314E075L087

 .......

133

 ...........

630

 LPH2518E026L099

 .......

133

 ...........

588

 LPH2518E040L099

 .......

133

 ...........

588

 LPH2518E060L099

 .......

133

 ...........

588

 LPH2518E075L099

 .......

133

 ...........

588

 EQH2619E026L101

 .......

133

 ...........

462

 EQH2619E040L101

 .......

133

 ...........

462

 EQH2619E060L101

 .......

133

 ...........

462

 EQH2619E075L101

 .......

133

 ...........

462

 EQH2619E026L124

 .......

133

 ...........

420

 EQH2619E040L124

 .......

133

 ...........

420

 EQH2619E060L124

 .......

133

 ...........

420

 EQH2619E075L124

 .......

133

 ...........

420

 EQH3222E026L101

 .......

133

 ...........

360

 EQH3222E040L101

 .......

133

 ...........

360

 EQH3222E060L101

 .......

133

 ...........

360

 EQH3222E075L101

 .......

133

 ...........

360

 EQH3222E026L152

 .......

133

 ...........

300

 EQH3222E040L152

 .......

133

 ...........

300

 EQH3222E060L152

 .......

133

 ...........

300

 EQH3222E075L152

 .......

133

 ...........

300

 EQH3626E026L174

 .......

133

 ...........

240

 EQH3626E040L174

 .......

133

 ...........

240

 EQH3626E060L174

 .......

133

 ...........

240

 EQH3626E075L174

 .......

133

 ...........

240

 EQH4128E026L199

 .......

133

 ...........

160

 EQH4128E040L199

 .......

133

 ...........

160

 EQH4128E060L199

 .......

133

 ...........

160

 EQH4128E075L199

 .......

133

 ...........

260

 LPH4225E026L123

 .......

133

 ...........

180

 LPH4225E040L123

 .......

133

 ...........

180

 LPH4225E060L123

 .......

133

 ...........

180

 LPH4225E075L123

 .......

133

 ...........

180

 LPH4225E026L158

 .......

133

 ...........

180

 LPH4225E040L158

 .......

133

 ...........

180

 LPH4225E060L158

 .......

133

 ...........

180

 LPH4225E075L158

 .......

133

 ...........

180

 EQH5032E026L250

 .......

133

 .............

96

 EQH5032E040L250

 .......

133

 .............

96

 EQH5032E060L250

 .......

133

 .............

96

 EQH5032E075L250

 .......

133

 .............

96

High Flux EQ Cores and LP Cores

 P/N 

             PG   BOX QTY

 P/N 

             PG   BOX QTY

 P/N 

             PG   BOX QTY

 P/N 

             PG   BOX QTY

Magnetics-Powder-Core-Catalog-2020-html.html
background image

MAGNETICS

10

General Information

Introduction

Magnetics Kool Mµ

®

 powder cores are distributed air gap 

cores made from a ferrous alloy powder for low losses at 
elevated frequencies . The near zero magnetostriction alloy 
makes Kool Mµ ideal for eliminating audible frequency noise 
in filter inductors . In high frequency applications, core losses 
of powdered iron, for instance, can be a major factor in 
contributing to undesirable temperature rises . 

Kool Mµ cores are superior because their losses are 
significantly less . Kool Mµ cores generally offer a reduction 
in core size or an improvement in efficiency and temperature 
rise compared with powdered iron cores . This performance 
advantage is greater at higher frequencies .

Compared with ferrites, Kool Mµ has the advantage of much 
higher saturation, soft (controlled) saturation, and temperature 
stability . The result is often a smaller overall package size for 
Kool Mµ compared with a gapped ferrite inductor .

Kool Mµ is available in a variety of core types for maximum 
flexibility . Toroids offer compact size and self-shielding . E cores 
and U cores afford lower cost of winding, use of foil inductors, 
and ease of fixturing . Very large cores and structures are 
available to support very high current applications . These 
include toroids up to 102 mm, 133 mm and 165 mm; large E 
cores; U cores; stacked shapes; and blocks .

Magnetics Kool Mµ

®

 MAX

 powder cores are distributed 

air gap cores made from a ferrous alloy powder offering 
50% better DC bias performance than standard Kool Mµ 
material . Use of copper wire is minimized by maintaining 
inductance using less turns, resulting in savings in overall 
component cost . Inductors built with Kool Mµ MAX do not 
have several of the disadvantages that are inherent with 
gapped ferrite cores, including low saturation flux density 
and fringing losses at the ferrite’s discrete air gap .

Magnetics Kool Mµ

®

 H

ƒ

 distributed air gap powder 

cores are the best option for achieving superior efficiency 
in medium and high current power inductors . With low 
losses in the target range of 200-500 kHz, Kool Mµ Hƒ 
was developed to serve the needs of new SiC and GaN 
switching power supplies . Kool Mµ Hƒ can be used from 
20 kHz up to several MHz while maintaining the same 
saturation and temperature performance benefits of Kool Mµ 
and Kool Mµ MAX .

Magnetics XF

lux

®

 distributed air gap cores are made from 

6 .5% silicon iron powder for very high saturation flux density, 

comparable with High Flux . The soft saturation of XF

lux

 

material results in smaller and more robust designs than 
with gapped ferrite cores or laminated gapped cores . XF

lux

 

cores are ideal for low and medium frequency chokes where 
inductance at peak load is critical .

Magnetics High Flux

 powder cores are distributed air gap 

cores made from a 50% nickel – 50% iron alloy powder for 
very high resistance to saturation at high current . High Flux 
cores have advantages that result in superior performance 
in certain applications involving high power, high DC bias, 
or high AC excitation amplitude . The High Flux alloy has 
saturation flux density that is twice that of MPP alloy and 
three times or more than that of ferrite . As a consequence, 
High Flux cores can support significantly more DC bias 
current or AC flux density .

High Flux offers much lower core losses and superior DC 
bias compared with powdered iron cores . High Flux cores 
offer lower core losses and similar DC bias compared with 
XF

lux

 cores . Frequently, High Flux allows the designer to 

reduce the size of an inductive component compared with 
MPP, powdered iron, or ferrite .

Magnetics Edge

®

 

distributed air gap cores, made from 

nickel-iron alloy, are the best option for achieving smallest 
package size in high frequency, current-limited power 
inductors . When compared with High Flux, Edge achieves 
dramatically improved DC bias performance and cuts AC 
core losses in half . Edge retains all the same advantages of 
soft saturation, high temperature performance, and minimal 
shift in properties with temperature .

Magnetics Molypermalloy Powder (MPP)

 cores are 

distributed air gap toroidal cores made from an 81% nickel, 
17% iron, and 2% molybdenum alloy powder for extremely 
low core losses, highest Q, and highest temperature stability 
compared with other materials . MPP cores (and all powder 
cores) exhibit soft saturation, which is a significant design 
advantage compared with gapped ferrites . Also, unlike 
ferrites, the MPP saturation curve does not need to be 
derated with increasing device temperature .

MPP cores possess many outstanding magnetic 
characteristics, such as high resistivity, low hysteresis and 
eddy current losses, excellent inductance stability after high 
DC magnetization or under high DC bias conditions, and 
minimal inductance shift under high AC excitation .

Magnetics Kool Mµ

®

, Kool Mµ

®

 MAX, Kool 

®

 Hƒ, XF

lux

®

, High Flux, Edge

®

 and MPP 

are true high temperature materials with no 
thermal aging.

Magnetics is committed to meeting global 
environmental standards and initiatives. Magnetics’ 
REACH and RoHS compliance statements and reports 
are available on our website: www.mag-inc.com

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11

Applications and Materials

General Information

Magnetics powder cores are most commonly used in power 
inductor applications, specifically in switch-mode power supply 
(SMPS) filter inductors, also known as DC inductors or chokes .  
Other power applications include differential inductors, boost 
inductors, buck inductors and flyback transformers .

While all seven materials are used in these applications, 
each has its own advantages .  For the lowest loss inductor, 
Kool Mµ Hƒ and MPP materials should be used since they 
have the lowest core loss .  For the smallest package size in 
a DC bias dominated design, Edge and High Flux should be 
used since they have the highest flux capacity . XF

lux

 can be 

a lower cost alternative to High Flux in situations where the 
higher core losses and more limited permeability availability 

of XF

lux

 is acceptable . Both Kool Mµ and Kool Mµ MAX 

are economical choices that offer superior DC bias under 
current loading . 

Magnetics' powder cores are used in a variety of other 
applications, including:  High Q filters, high reliability 
inductors and filters, high temperature inductors and filters, 
high current CTs, telecom filters, and load coils .

Magnetics’ powder cores are available in a variety of 
shapes including toroids, E cores, U cores, EQ cores, LP 
cores, cylinders, and blocks, which can be used to create 
customizable structures . 

For more information on cylinders 

or custom shapes, please contact Magnetics.

A lower cost family of alternative products to Magnetics’ seven premium powder core materials are powdered irons .  
Manufacturers of powdered iron use a different production process .  For comparison with the above table, powdered irons have 
permeabilities from 10-100; highest core loss; good perm vs . DC bias; fair temperature stability; lower temperature ratings; soft 
saturation; 0% nickel content; lowest relative cost .

Magnetics' Kool Mµ family of products and powdered iron cores have comparable DC bias performance . The advantages of Kool 
Mµ compared with powdered iron include (1) lower core losses; (2) no thermal aging, since Kool Mµ is manufactured without 
the use of organic binders; (3) near zero magnetostriction, which means that Kool Mµ can be useful for addressing audible noise 
problems; and (4) better stability of permeability vs . AC flux density .

Kool Mµ

®

Kool Mµ

® 

MAX Kool Mµ

®

 Hƒ XF

lux

®

High Flux Edge

®

MPP

Alloy Composition

FeSiAl

FeSiAl

FeSiAl

FeSi

FeNi

FeNi

FeNiMo

Available Permeabilities

14-125

14-60

26, 60

19-125

14-160

26, 60

14-550

Core Loss - 60µ (mW/cc)

50 kHz, 1000 G

215

200

120*

575

250

150

165

100 kHz, 1000 G

550

550

325*

1,280

625

375

450

Perm vs. DC Bias - 60µ (Oe)

80% of µ

i

45

65

60

100

100

130*

60

50% of µ

i

95

130

115

170

185

205*

105

60µ Temperature Stability - Typical % shift from -60 to 200°C

6%

3%

5%

4%

4.5%

2%

2.5%

Curie Temperature

500°C

500°C

500°C

700°C

500°C

500°C

460°C

Saturation Flux Density (Tesla)

1.0

1.0

1.0

1.6

1.5

1.5

0.8

Frequency Response - 60µ flat to…

5 MHz

15 MHz

30 MHz

3 MHz

3 MHz

20 MHz

 6 MHz

Relative Cost

1x*

2x

2x

1.2x

4x-6x

5x

7x-9x

*

indicates best choice

Magnetics-Powder-Core-Catalog-2020-html.html
background image

MAGNETICS

12

Material Data

Material Properties

PERMEABILITY vs. T, B, & f - TYPICAL

Permeability (µ)

µ vs. T dynamic range 

(-50º C TO +100º C)

MATERIALS RATED TO 200º C

µ vs. B dynamic range 

0 to 400 mT

µ vs. f 

flat to...

Kool Mµ

®

14µ

0.6%

+0.6%

20 MHz

26µ

1.2%

+1.1%

13 MHz

40µ

1.9%

+1.7%

9 MHz

60µ

2.9%

+2.5%

5 MHz

75µ

3.7%

+3.1%

4 MHz

90µ

4.4%

+3.8%

3 MHz

125µ

6.2%

+5.2%

2 MHz

Kool Mµ

®

 MAX

14µ

0.3%

+0.9%

27 MHz

19µ

0.4%

+1.3%

25 MHz

26µ

0.6%

+1.7%

22 MHz

40µ

0.9%

+2.7%

18 MHz

60µ

1.3%

+4.0%

13 MHz

Kool Mµ

®

 Hƒ

26µ

0.8%

+0.8%

23 MHz

60µ

2.5%

+1.8%

16 MHz

X

F

lux

®

19µ

0.5%

+7.1% 

6 MHz

26µ

1.1%

+10.2%

5 MHz

40µ

2.0%

+13.2%

4 MHz

60µ

3.0%

+16.3%

4 MHz

75µ

3.7%

+20.3%

2 MHz

90µ

4.5%

+24.4%

2 MHz

125µ

6.2%

+28.5%

1 MHz

High Flux

14µ

1.5%

+5.0%

3 MHz

26µ

2.0%

+9.0%

1.5 MHz

60µ

2.6%

+13.5%

1 MHz

125µ

3.6%

+19.0%

700 kHz

147µ

4.8%

+22.0%

500 kHz

160µ

5.5%

+25.0%

400 kHz

Edge

®

26µ

0.9%

+0.8%

22 MHz

60µ

1.2%

+1.9%

15 MHz

MPP

14µ

0.7%

+0.4%

4 MHz

26µ

0.9%

+0.4%

3 MHz

60µ

1.0%

+0.8%

2 MHz

125µ

1.3% 

+1.4%

300 kHz

147µ, 160µ, 173µ

1.5%

+1.9%

200 kHz

200µ

1.6%

+2.8%

100 kHz

300µ

1.6%

+4.5%

90 kHz

550µ

8.7%

+21.0%

20 kHz

Curie 

Temperature

Density (60µ)

Coefficient of  

Thermal Expansion

 Kool Mµ

500

°

5.8 grams/cm

3

10.8 x 10

-6

/

°

C

K

ool

 

 MAX

500

°

C

6.5 grams/cm

3

10.8 x 10

-6

/

°

C

X

F

luX

700

°

C

6.9 grams/cm

3

11.6 x 10

-6

/

°

C

High Flux

500

°

C

7.6 grams/cm

3

5.8 x 10

-6

/

°

C

MPP

460

°

C

7.8 grams/cm

3

12.9 x 10

-6

/

°

C

Magnetics-Powder-Core-Catalog-2020-html.html
background image

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13

Material Data

Core Weights

Unit Conversions

To obtain number of

Multiply number of

By

A.T/cm

oersteds

0.795

oersteds

A.T/cm

1.26

tesla

gauss

0.0001

gauss

tesla

10,000

gauss

mT(milli Tesla)

10

cm

2

in

2

6.452

cm

2

circular mils

5.07 x 10

-6

Permeability

14µ

19µ

26µ

40µ

60µ

75µ

90µ

125µ

147µ 

160µ 

173µ

200µ 

300µ

550µ

85%

89%

91%

96%

100%

102%

103%

105%

106%

107%

108%

See individual data sheets for nominal core weights.

 Material densities listed on page 12 are for 60µ . The approximate 

densities of other permeabilities are related to 60µ density by the factors shown:

Magnetics-Powder-Core-Catalog-2020-html.html
background image

MAGNETICS

14

General Information

Core Identification

All Magnetics powder cores have unique part numbers that provide important information about the characteristics of the cores.  
Depending on size, cores may be stamped using laser etching or ink. A description of each type of part number is provided below.

Core Finish Code

Voltage Breakdown 

(wire to wire)

Material Availability

OD Size Availability

A2

2,000 V

AC

 min*

High Flux, Edge, MPP 

All

A7

2,000 V

AC

 min*

Kool Mµ, Kool Mµ

 

MAX,  

Kool Mµ

 

Hƒ , XF

lux

All

AY

   600 V

AC

 min

All

3.56 - 16.6 mm**

A9

8,000 V

AC

 min

All

>4.65 mm

TOROIDS

C O 5 5 2 0 6 A 2

LARGE E CORES

00K130LE026 

*A2 and A7 voltage breakdown min varies by size:
  • 1000 V

AC

 with OD 

4.65mm

  • 1250 V

AC

 with 4.65mm 

<

 OD 

<

 17.27mm

  • 2000 V

AC

 with 17.27mm 

 OD 

<

 26.92mm

  • 3000 V

AC

 with OD 

26.92mm

**AY finish not available for 550µ MPP

SHAPES

00K5528E060

Permeability Code ... Permeability, e.g. 060 for 60µ

Shape Code . . . . . .  E = E Core

 

U = U Core

 

I = I Core/Plate

 

B = Block

Size Code . . . . . . .  First two digits equal approximate length 

 

or OD in mm / Last two digits equal 

 

approximate height or ID in mm

Material Code . . . . . K = Kool Mµ
 

M = MPP*

 

H = High Flux*

 

X = XF

lux

 

*consult factory

Grading Code . . . . .  00 = Not graded
 

• Full part number and shop order  

 

   number are marked on all shapes

Permeability Code . . Permeability, e.g. 026 for 26µ

Shape Code . . . . . .  LE = Large E Core

Size Code. . . . . . . . Approximate length in mm

Material Code . . . . . M = MPP* 

H = High Flux* 

 

K = Kool Mµ 

X = XF

lux

 

*consult factory 

Grading Code . . . . .  00 = Not graded

 

• Full part number and shop order  

 

   number are marked on all shapes

Size 

(OD mm)

6-digit  

Shop Order Number

2-digit  

Material Code

3-digit 

Catalog Number

2-digit 

Core Finish Code

Inductance  

Code

Marking  

Example

6.35 - 6.86

4

4

4

123456  020 +6

7.87 - 12.7

4

4

4

4

123456  050A2 +6

> 12.7

4

4

4

4

4

123456  55120A2 +6

Powder Core Toroid Marking Summary

•  Inductance Code is only marked on MPP and High Flux toroids with C0 grading code

•  Cores with OD < 6.35 mm are not marked

•  Shop order number identifies the product batch, ensuring traceability of every 

core through the entire manufacturing process, back to raw materials

EQ & LP CORES

EQ X 2619 E060 L101

Height Code . . . . . . Approximate leg length per piece,  

 

        e.g. 101 for 10.1 mm

Permeability Code . . Permeability, e.g. 060 for 60µ
Size Code . . . . . . .  First two digits equal approximate length

 

or OD in mm / Last two digits equal

 

approximate width in mm

Material Code . . . . . K = Kool Mµ  

H = High Flux 

 

X = XF

lux

  

Shape Code . . . . . . EQ = EQ Shape

 

LP = LP Shape

Catalog Number (designates size and permeability)
Material Code  . . . .  55 = MPP

 

58 = High Flux

 

59 = Edge

 

76 = Kool Mµ Hƒ 

 

77 = Kool Mµ

 

78 = XF

lux

 

79 = Kool Mµ MAX

Grading Code . . . . .  CO = Graded into 2% inductance bands  – OD <4.65 mm, 5% bands

 

00 = Not graded

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15

Inductance and Grading

General Information

PARTS NOT GRADED

A

L

 (Inductance factor) is given for each core in this catalog . 

Inductance for blocks is tested in standard picture frame 
arrangements . Units for A

L

 are nH/T

2

 . A

L

 is related to nominal 

calculated inductance (L

N

, in µH) by the number of turns, N . 

L

N

 = A

L

 N

2

 10

-3

Magnetics’ inductance standards are measured in a Kelsall 
Permeameter Cup .  Actual wound inductance measured 
outside a Kelsall Cup is greater than the nominal calculated 
value due to leakage flux and flux developed by the current 
in the winding . The difference depends on many variables;  
core size, permeability, core coating thickness, wire size 
and number of turns, in addition to the way in which the 
windings are put on the core .  The difference is negligible 
for permeabilities above 125 and turns greater than 500 .  
However, the lower the permeability and/or number of turns, 
the more pronounced this deviation becomes .

The following formula can be used to approximate the leakage 
flux to add to the expected inductance .  This formula was 
developed from historical data of cores tested at Magnetics .  
Be aware that this will only give an approximation based on 
evenly spaced windings .  You may expect as much as a ±50% 
deviation from this result .

Example: C055930A2 with 25 turns (p . 108)

Example : C055930A2 (26 .9 mm, 125µ, p . 108)

Number  

of Turns

Calculated  

Inductance

Measured  

Inductance

1,000

157 mH

+0.0%

500

39.3 mH

+0.5%

300

14.1 mH

+1%

100

1.57 mH

+3%

50

393 µH

+5%

25

98.1 µH

+9%

Magnetics powder cores are precision manufactured to 
an inductance tolerance of ± 8%*, using standard Kelsall 
Permeameter Cup measurements with a precision series 
inductance bridge .

MPP and High Flux cores with outside diameters > 4 .65 mm 
are graded into 2% inductance bands as a standard practice 
at no additional charge .  Core grading can reduce winding 
costs by minimizing turns adjustments when building high 
turns inductors to very tight inductance specifications .  MPP 
cores 4 .65 mm and smaller are graded into 5% bands .

14µ and 26µ cores  •  Parylene coated cores 

  The following toroid OD sizes: 
 

62 .0 mm OD 

68 .0 mm OD 

74 .1 mm OD 

 

77 .8 mm OD 

101 .6 mm OD 

132 .6 mm OD 

 

165 .1 mm OD

Core Inductance Tolerance and Grading

Measured vs. Calculated Inductance

+8

+8

+7

-4.0

-3.5

+6

+7

+5

-3.5

-2.5

+4

+5

+3

-2.5

-1.5

+2

+3

+1

-1.5

-0.5

+0

+1

-1

-0.5

+0.5

-2

-1

-3

+0.5

+1.5

-4

-3

-5

+1.5

+2.5

-6

-5

-7

+2.5

+3.5

-8

-7

-8

+3.5

+4.0

GRADE 

Stamped 

on Core 

OD

INDUCTANCE 

% Deviation 

from Nominal

From

From

To

To

TURNS 

% Deviation 

from Nominal

9 - old 1 - 4?or5

L

LK

=

l

e

0.292N

1.065

A

e

where:

L

LK

= leakage induc tance adder (µH)

N= number of turns

A

e

= core cross sec tion(mm

2

)

l

e

= core magnetic pathlength(mm)

CatalogData

A

L

= 157 nH/T

2

A

e

= 65.4 mm

2

I

e

= 63.5 mm

Calculated Induc tance
L

N

= (157)(25)

2

10

-3

= 98.1µH

Leakage Adder

L

LK

=

63.5

0.292(25)

1.065

(65.4)

= 9.3 µH

Est Measured Induc tance
L = L

N

+ L

LK

= 98.1+ 9.3
= 107 µH

Catalog Data

Calculated Inductance

 

 

Leakage Adder

Estimated Measured Inductance

9 - old 1 - 4?or5

L

LK

=

l

e

0.292N

1.065

A

e

where:

L

LK

= leakage induc tance adder (µH)

N= number of turns

A

e

= core cross sec tion(mm

2

)

l

e

= core magnetic pathlength(mm)

CatalogData

A

L

= 157 nH/T

2

A

e

= 65.4 mm

2

I

e

= 63.5 mm

Calculated Induc tance
L

N

= (157)(25)

2

10

-3

= 98.1µH

Leakage Adder

L

LK

=

63.5

0.292(25)

1.065

(65.4)

= 9.3 µH

Est Measured Induc tance
L = L

N

+ L

LK

= 98.1+ 9.3
= 107 µH

9 - old 1 - 4?or5

L

LK

=

l

e

0.292N

1.065

A

e

where:

L

LK

= leakage induc tance adder (µH)

N= number of turns

A

e

= core cross sec tion(mm

2

)

l

e

= core magnetic pathlength(mm)

CatalogData

A

L

= 157 nH/T

2

A

e

= 65.4 mm

2

I

e

= 63.5 mm

Calculated Induc tance
L

N

= (157)(25)

2

10

-3

= 98.1µH

Leakage Adder

L

LK

=

63.5

0.292(25)

1.065

(65.4)

= 9.3 µH

Est Measured Induc tance
L = L

N

+ L

LK

= 98.1+ 9.3
= 107 µH

9 - old 1 - 4?or5

L

LK

=

l

e

0.292N

1.065

A

e

where:

L

LK

= leakage induc tance adder (µH)

N= number of turns

A

e

= core cross sec tion(mm

2

)

l

e

= core magnetic pathlength(mm)

CatalogData

A

L

= 157 nH/T

2

A

e

= 65.4 mm

2

I

e

= 63.5 mm

Calculated Induc tance
L

N

= (157)(25)

2

10

-3

= 98.1µH

Leakage Adder

L

LK

=

63.5

0.292(25)

1.065

(65.4)

= 9.3 µH

Est Measured Induc tance
L = L

N

+ L

LK

= 98.1+ 9.3
= 107 µH

9 - old 1 - 4?or5

L

LK

=

l

e

0.292N

1.065

A

e

where:

L

LK

= leakage induc tance adder (µH)

N= number of turns

A

e

= core cross sec tion(mm

2

)

l

e

= core magnetic pathlength(mm)

CatalogData

A

L

= 157 nH/T

2

A

e

= 65.4 mm

2

I

e

= 63.5 mm

Calculated Induc tance
L

N

= (157)(25)

2

10

-3

= 98.1µH

Leakage Adder

L

LK

=

63.5

0.292(25)

1.065

(65.4)

= 9.3 µH

Est Measured Induc tance
L = L

N

+ L

LK

= 98.1+ 9.3
= 107 µH

L

LK

 = leakage inductance adder (µH)

N  = number of turns
A

e

  = core cross section (mm

2

)

I

e

  = core magnetic path length (mm)

Graded Magnetics MPP cores and High Flux cores are also available  
with tolerances tighter than the standard ± 8% .

*Kool Mµ cores with OD < 12 .7 mm have wider tolerances .

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MAGNETICS

16

Core Coating

MPP Temperature Stabilization

General Information

Magnetics toroidal powder cores are coated with a special 
epoxy finish that provides a tough, wax tight, moisture and 
chemical resistant barrier having excellent dielectric properties. 
Toroids up to 16.5 mm OD can also be coated with 
Parylene-C (core finish code AY).

The finish is tested for voltage breakdown by inserting a core 
between two weighted wire mesh pads. Force is adjusted 
to produce a uniform pressure of 10 psi, simulating winding 
pressure. The test condition for each core in the random 
sample set, to guarantee minimum breakdown voltage in 

Material

Color

Core Finish Codes

Kool Mµ

®

 

Black

A7, A9

Kool Mµ

® 

MAX

Black

A7, A9

Kool Mµ

® 

Hƒ 

Black

A7, A9

XF

lux

®

Brown

A7, A9

High Flux

Khaki

A2, A9

Edge

®

Green

A2, A9

MPP

Gray

A2, A9

Part Number Suffix

Stabilization Type

Guaranteed Inductance Range

Stabilized Temperature Range

W4

Controlled

0.50% maximum

-55°C to +85°C

M4

Controlled

0.50% maximum

-65°C to +125°C

each production batch, is 60 Hz rms voltage at 1.25 the 
guaranteed limit. A2 and A7 samples (26.9 mm and larger) 
are tested to 3750 V min wire-to-wire. AY samples are tested 
to 750 V min wire-to-wire.

Higher minimum breakdown coatings can be applied upon 
request for cores larger than 4.65 mm.

Parylene coating (AY) minimizes the constriction of the inside 
diameter, although the surface texture is not as smooth as 
epoxy. All finished dimensions in this catalog are for epoxy 
coating (A2 or A7). For AY coating, the maximum OD and 
HT are reduced by 0.18 mm (0.007”), and the minimum ID is 
increased by 0.18 mm (0.007”).

The maximum steady-state operating temperature for epoxy 
coating is 200°C.  The maximum steady-state operating 
temperature for parylene coating is 130°C, but it can be 
used as high as 200°C for short periods, such as during 
board soldering. High temperature operation of Magnetics 
powder cores does not affect magnetic properties. 

Kool Mµ, Kool Mµ MAX, Kool Mµ Hƒ, XF

lux

High Flux,

 

Edge

 

and MPP materials can be operated continuously at
200°C with no aging or damage.

M4 cores meet the W4 limits and may be substituted in place of W4. 

Stability limit example: When the 2mT, 10kHz inductance of a W4 stabilized core is measured at all temperature stops between -55°C and +85°C, the difference between the highest value and 

the lowest value cannot exceed 0.50% of the inductance at 25°C.

Magnetics' core finish code is used to designate the 
stabilization, although the coating itself has no influence on 
the temperature stabilization performance of the core.  A2, 
A7, AY and A9 are standard and W4 and M4 are controlled 
stabilization. 

Inductance of standard MPP cores exhibits a small, positive 
temperature coefficient.  This is due to the permeability vs. 
temperature characteristic of the magnetic alloy, and to the 
thermal expansion response of the distributed air gap formed 
by the insulating material surrounding metal powder grains.

The inductance of controlled stabilization MPP cores (codes 
W4 and M4) exhibits nearly flat temperature coefficient within 
defined temperature ranges. This is accomplished with 
adjustments in the alloy chemistry, unique to Magnetics. 

There is no impact on any electrical or physical properties 
apart from the flattened inductance curve. W4 and M4 cores 
are higher in cost than standard stabilization cores.

The typical applications for stabilized cores are tuned 
filters, where very consistent inductance over temperature 
is required.  The flat inductance performance of controlled 
stabilization cores is apparent only at low drive levels, less 
than 10 mT. Consequently, there is no performance benefit 
to using stabilized cores at higher drive levels, for example in 
power chokes.

Contact Magnetics for availability of sizes and permeabilities 
of W4 and M4 powder cores.

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17

Cor
e Selection

Inductor Core Selection Procedure

Only two parameters of the design application must be 
known to select a core for a current-limited inductor:  
inductance required with DC bias and the DC current .  
Use the following procedure to determine the core size 
and number of turns .

1 . 

 Compute the product of LI

2

 where:  

L = inductance required with DC bias (mH)  
I = DC current (A)

2 . 

 Locate the LI

2

 value on the Core Selector Chart 

(pgs . 26 - 32) .  Follow this coordinate to the inter-
section with the first core size that lies above the 
diagonal permeability line . This is the smallest core 
size that can be used .

3 . 

 The permeability line is sectioned into standard 
available core permeabilities .  Selecting the core 
listed on the graph will tend to be the best tradeoff 
between A

L

 and DC bias .

4 . 

 Inductance, core size, and permeability are now 
known .  Calculate the number of turns by using the 
following procedure:

 

(a)       The inductance factor (A

L

 in nH/T

2

) for the 

core is obtained from the core data sheet .  
Determine the minimum A

by using the worst 

case negative tolerance (generally -8%) .  With 
this information, calculate the number of turns 
needed to obtain the required inductance 
from:

11old 2 - 1

N =

A

L

L 10

3

H =

l

e

4

r

NI

3

T (˚C) = Component Surface Area(cm

2

)

Total Losses (mW)

U

Z

0.833

 

       Where L is required inductance (µH)

 

(b)     Calculate the bias in Oersteds from:

11old 2 - 1

N =

A

L

L 10

3

H =

l

e

4

r

NI

3

T (˚C) = Component Surface Area(cm

2

)

Total Losses (mW)

U

Z

0.833

 

(c)      From the Permeability vs . DC Bias curves 

(pgs . 34 - 41), determine the rolloff percentage 
of initial permeability for the previously calcu-
lated bias level .  Curve fit equations shown 
in the catalog can simplify this step . They are 
also available to use on Magnetics' website: 
http://www .mag-inc .com/design/design-tools/
Curve-Fit-Equation-Tool

 

(d)      Multiply the required inductance by the per-

centage rolloff to find the inductance with bias 
current applied .

 

 

(e)  Increase the number of turns by dividing the 

initial number of turns (from step 4(a)) by the 
percentage rolloff .  This will yield an inductance 
close to the required value after steps 4 (b), (c) 
and (d) are repeated .

 

(f)   Iterate steps 4 (b), (c) and (d) if needed to adjust 

turns up or down until the biased inductance is 
satisfactorily close to the target .

5 .   Choose a suitable wire size using the Wire Table (p . 

28) .  Duty cycles below 100% allow smaller wire 
sizes and lower winding factors, but do not allow 
smaller core sizes .

6 . 

 Design  Checks

 

(a) 

Winding Factor

 . See p .19 for notes on checking 

the coil design .

 (b) 

Copper Losses

 .

 

See p .19 for notes on calculat-

ing conductor resistance and losses .

 (c) 

Core Losses

 . See pgs . 20 - 24 for notes on cal-

culating AC core losses . If AC losses result in too 
much heating or low efficiency, then the inductor 
may be loss-limited rather than current-limited . 
Design alternatives for this case include using a 
larger core or a lower permeability core to reduce 
the AC flux density; or using a lower loss material 
such as MPP or Kool Mµ MAX in place of Kool 
Mµ, or High Flux in place of XF

lux

 .

 (d) 

Temperature Rise

 . Dissipation of the heat gener-

ated by conductor and core losses is influenced 
by many factors . This means there is no simple 
way to predict temperature rise (

%

T) precisely . 

But the following equation is known to give a 
useful approximation for a component in still air . 
Surface areas for cores wound to 40% fill are 
given with the core data in this catalog .

11old 2 - 1

N =

A

L

L 10

3

H =

l

e

4

r

NI

3

T (˚C) = Component Surface Area(cm

2

)

Total Losses (mW)

U

Z

0.833

Magnetics-Powder-Core-Catalog-2020-html.html
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0.00 mm O.D.

Cor

e Selection

MAGNETICS

18

Core Selection Example

Determine core size and number of turns to meet the 
following requirement:

(a)    Minimum inductance with DC bias of  

0 .6 mH (600 µH)

(b)   DC current of 5 .0 A

 
1 .     LI

2

= (0 .6)(5 .0)

2

=15 .0 mH·A

2

 
2 .      Using the Kool Mµ Toroids LI

2

 chart found on p . 26, 

locate 15 mH·A

2

 on the bottom axis . Following 

this coordinate vertically results in the selection of 
0077083A7 (77083) as an appropriate core for the 
above requirements .

 
3 .      From the 0077083A7 core data p . 112, the inductance 

factor (A

L

) of this core is 81 nH/T

2

 ± 8% . The minimum 

A

L

 of this core is 74 .5 nH/T

2

 .  

 
4 .     From L=A

L

·N

2

, 90 turns are needed to obtain 600 µH at  

 

no load . To calculate the number of turns required at full  

 

load, determine the DC bias level:  

 H=4

r

 N·I / 

l

e  

where 

l

e

 is the path length in mm . The DC  

 

bias is 57 .5 Oe, yielding 72% of initial permeability from  

 

the 60µ Kool Mµ DC bias curve on p . 34 .The adjusted  

 

turns are 90/0 .72 =125 Turns .

5 .      Re-calculate the DC bias level with 125 turns . The 

permeability versus DC bias curve shows 58% of initial 
permeability at 79 .8 Oe .

 
6 .      Multiply the minimum A

L

 74 .5 nH/T

2

 by 0 .58 to yield 

effective A

L

 = 43 .2 nH/T

2

 . The inductance of this 

core with 125 turns and with 79 .8 Oe will be 675 µH 
minimum . The inductance requirement has been met .

 
7 .      The wire table indicates that 17 AWG is needed to 

carry 5 .0 A with a current density of 500 A/cm

2

 .  

125 turns of 17 AWG (wire area = 1 .177 mm

2

) equals 

a total wire area of 147 .1 mm

2

 . The window area of a 

0077083A7 is 427 mm

2

 . Calculating window fill,  

147 .1 mm

2

/427 mm

2

 corresponds to an approximate 

35% winding factor . A 0077083A7 with 125 turns of  
17 AWG is a manufacturable design .

Cor

e Selection

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0.00 mm O.D.

www.mag-inc.com

19

Cor
e Selection

Toroid Winding

Winding Factor

Winding factor, also called fill factor, is the ratio of total 

conductor cross section (usually copper cross section) to 

the area of the core window .

Toroid Core Winding factors can vary from 20-60%, a typical 

value in many applications being 35-40% .

In practice, several approaches to toroid winding are used:

Single layer: The number of turns is limited by 

the inside circumference of the core divided by 

the wire diameter .  Advantages are lower winding 

capacitance, more repeatable parasitics, good 

cooling, and low cost .  Disadvantages are reduced 

power handling and higher flux leakage . 

Low fill: For manufacturing ease and reduced 

capacitance, winding factor between single layer 

and 30% may be used . 

Full winding: Factors between 30% and 45% 

are normally a reasonable trade off between fully 

utilizing the space available for a given core size, 

while avoiding excessive manufacturing cost . 

High fill: Winding factors up to about 65% 

are achievable, but generally only with special 

expensive measures, such as completing each coil 

by hand after the residual hole becomes too small 

to fit the winding shuttle .

Estimating Wound Coil Dimensions

For each core size, wound coil dimensions are given for 

40% winding factor, since this is a typical, practical value .

Worst case package dimensions for coils wound completely 

full are also shown . These are max expected OD and max 

expected HT .

To estimate dimensions for other winding factors, use: 

 

Rv 7 - 17

OD

x%

= 40%

X% OD

40%

- OD

core

Q

V

+ OD

core

HT

x%

= ID

core

+ HT

core

-

60%

100% - X% ID

core

+ HT

core

- HT

40%

Q

V

2 - 8
H

AC max

=

I

e

N I

DC

+ 2

3

I

S

X

#

&

2 - 9

H

AC max

= 6.35

20 20 + 22

S

X

= 66.14

A

$

T

cm

"

B

AC max

b

0.44T

2 - 11

B

pk

= 0.5 µ

0

Q V

i

Q

V

µ

i

Q V

3

H

where

3

H

=

I

e

N

%

I

Where: X% is the new winding factor;

OD

40%

 and HT

40%

 are the coil dimensions shown on 

the core data page;

OD

core

 and HT

core

 are the maximum core dimensions 

after finish .

Cor
e Selection

MLT and DCR

MLT (Mean Length of Turn) is given for a range of winding 

factors for each core size . To estimate DCR, first calculate 

the winding factor for the core, wire gauge, and number of 

turns selected .  On the wire table look up resistance per 

unit of length for the gauge selected . On the data page for 

the core selected, consult the Winding Turn Length chart .  

Unless the winding factor is exactly one of the values listed, 

interpolate to find the MLT . Then,

DCR = (MLT)(N) (

Q

/Length) .

For single layer winding, MLT is the 0% fill value on each 

core data page . Even easier, DCRs for single layer windings 

for a range of wire gauges are given in the winding tables on 

pgs . 137 - 141 .

Wire Loss

DC copper loss is calculated directly as I

2

R . Naturally, for 

aluminum conductors, a suitable wire table must be used . 

Also, the increase of wire resistance with temperature 

should be considered .

AC copper loss can be significant for large ripple and for 

high frequency . Unfortunately, calculation of AC copper loss 

is not a straight-forward matter . Estimates are typically used .

N

 

A

W

W

A

Toroid winding factor =

where:  N = Number of turns
 A

W

 = Area of wire

 W

A

 = Window Area of the core

2

2

2

Rv8 - 20

4

r

ID

2

S

X

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Cor

e Selection

MAGNETICS

20

Powder Core Loss Calculation

Magnetizing Force (Oe)

60µ Kool Mµ DC Magnetization Curve  (Example 2)

1

0.0

0.1

0.2

0.3

0.4

0.5

0.6

10

100

Flux Density (T

esla)

160

147

125

90

75

60

40

26

14

173

200

250

300

550

500

550µ

160µ

H

AC min

H

AC max

B

AC max

B

AC min

B

H

 

 

Core loss is generated by the changing magnetic flux 

field within a material, since no magnetic materials exhibit 

perfectly efficient magnetic response .  Core loss density 

(PL) is a function of half of the AC flux swing (½ B=B

pk

) and 

frequency (

f

) . It can be approximated from core loss charts 

or the curve fit loss equation:

14 - old 2 - 8

PL = aB

b

pk

f

c

B

pk

= 2

%

B =

2

B

AC max

- B

AC min

H

AC max

=

I

e

N I

DC

+ 2

3

I

S

X

#

&

H

AC min

=

I

e

N I

DC

+ 2

3

I

S

X

#

&

where a, b, c are constants determined from curve fitting, 

and B

pk

 is defined as half of the AC flux swing:

14 - old 2 - 8

PL = aB

b

pk

f

c

B

pk

= 2

%

B =

2

B

AC max

- B

AC min

H

AC max

=

I

e

N I

DC

+ 2

3

I

S

X

#

&

H

AC min

=

I

e

N I

DC

+ 2

3

I

S

X

#

&

Units typically used are (mW/cm

3

) for PL; Tesla (T) for B

pk

and (kHz) for 

f

 .

The task of core loss calculation is to determine B

pk

 from 

known design parameters . Once B

pk

 and 

are known, PL is 

easily found from the catalog graph or equation .

Example 1 - AC current is 10% of DC current:

Approximate the core loss of an inductor with 20 turns wound on Kool Mµ p/n 77894 (p . 108) (60µ, 

l

e

=63 .5 mm, A

e

=65 .4 mm

2

A

L

=75 nH/T

2

) . Inductor current is 20 Amps DC with ripple of 2 Amps peak-peak at 100kHz .

1 .) Calculate 

H

 and determine 

B

 from BH curve (p . 65) or curve fit equation (p . 72):

14 15 - old 2 - 9 & 10

H

AC max

= 4

r

63.5

20 20 +

2

2

S

X

= 83.1 Oe

"

B

AC max

b

.404T

H

AC min

= 4

r

63.5

20 20 -

2

2

S

X

= 75.2 Oe

"

B

AC min

b

.377T

"

B

pk

= 2

%

B =

2

0.404 - 0.377 = 0.014T

PL = (44.3)(0.014

1.988

)(100

1.541

)

,

11.0 cm

3

mW

P

fe

= (PL)(

l

e

)(A

e

)~ (11.0)(63.5)(65.4) 1,000mm

3

1cm

3

T

Y

b

46mW

H

AC max

= 4

r

63.5

20 20 +

2

8

S

X

= 95.0 Oe

"

B

AC max

b

0.441T

H

AC min

= 4

r

63.5

20 20 -

2

8

S

X

= 63.3 Oe

"

B

AC min

b

0.331T

"

B

pk

= 2

%

B =

2

0.441- 0.331 = 0.055T

PL = (44.3)(0.055

1.988

)(100

1.541

)

,

168 cm

3

mW

P

fe

= (PL)(l

e

)(A

e

)= (168)(63.5)(65.4)(0.001)

,

698mW

H

AC max

= 4

r

63.5

20 +

2

8

S

X

= 15.8 Oe

"

B

AC max

b

0.092T

H

AC min

= 4

r

63.5

20 -

2

8

S

X

= - 15.8 Oe

"

B

AC min

b

-0.092T

"

B

pk

= 2

%

B ~ 0.092T

PL = (44.3)(0.092

1.988

)(100

1.541

)

,

466 cm

3

mW

P

fe

= (PL)(l

e

)(A

e

)= (466)(6.35)(0.654)

,

1.94W

     

14 15 - old 2 - 9 & 10

H

AC max

= 4

r

63.5

20 20 +

2

2

S

X

= 83.1 Oe

"

B

AC max

b

.404T

H

AC min

= 4

r

63.5

20 20 -

2

2

S

X

= 75.2 Oe

"

B

AC min

b

.377T

"

B

pk

= 2

%

B =

2

0.404 - 0.377 = 0.014T

PL = (44.3)(0.014

1.988

)(100

1.541

)

,

11.0 cm

3

mW

P

fe

= (PL)(

l

e

)(A

e

)~ (11.0)(63.5)(65.4) 1,000mm

3

1cm

3

T

Y

b

46mW

H

AC max

= 4

r

63.5

20 20 +

2

8

S

X

= 95.0 Oe

"

B

AC max

b

0.441T

H

AC min

= 4

r

63.5

20 20 -

2

8

S

X

= 63.3 Oe

"

B

AC min

b

0.331T

"

B

pk

= 2

%

B =

2

0.441- 0.331 = 0.055T

PL = (44.3)(0.055

1.988

)(100

1.541

)

,

168 cm

3

mW

P

fe

= (PL)(l

e

)(A

e

)= (168)(63.5)(65.4)(0.001)

,

698mW

H

AC max

= 4

r

63.5

20 +

2

8

S

X

= 15.8 Oe

"

B

AC max

b

0.092T

H

AC min

= 4

r

63.5

20 -

2

8

S

X

= - 15.8 Oe

"

B

AC min

b

-0.092T

"

B

pk

= 2

%

B ~ 0.092T

PL = (44.3)(0.092

1.988

)(100

1.541

)

,

466 cm

3

mW

P

fe

= (PL)(l

e

)(A

e

)= (466)(6.35)(0.654)

,

1.94W

2 .) Determine core loss density from chart (p . 43) or calculate from loss equation (p . 64):

3 .) Calculate core loss:

Method 1 – Determine B

pk

 from DC 

Magnetization Curve . B

pk

= f

(

H

)

Flux density (B) is a non-linear function of magnetizing field (H), 

which in turn is a function of winding number of turns (N), current 

(I), and magnetic path length (

l

e

) . The value of B

pk

 can typically be 

determined by first calculating 

H

 at each AC extreme:

14 - old 2 - 8

PL = aB

pk

b

f

c

B

pk

= 2

%

B

=

2

B

AC max

B

AC min

H

AC max

= 4

r

l

e

N

I

DC

+

2

3

I

S

X

#

&

H

AC min

= 4

r

l

e

N

I

DC

-

2

3

I

S

X

#

&

Units: Oersted; Amp; mm 

From H

AC max

, H

AC min

, and the BH curve or equation (pgs . 65 - 

72) B

AC max

, B

AC min

 and therefore B

pk

 can be determined .

14 15 - old 2 - 9 & 10

H

AC max

= 4

r

63.5

20 20 +

2

2

S

X

= 83.1 Oe

"

B

AC max

b

.404T

H

AC min

= 4

r

63.5

20 20 -

2

2

S

X

= 75.2 Oe

"

B

AC min

b

.377T

"

B

pk

= 2

%

B =

2

0.404 - 0.377 = 0.014T

PL = (44.3)(0.014

1.988

)(100

1.541

)

,

11.0 cm

3

mW

P

fe

= (PL)(

l

e

)(A

e

)~ (11.0)(63.5)(65.4) 1,000mm

3

1cm

3

T

Y

b

46mW

H

AC max

= 4

r

63.5

20 20 +

2

8

S

X

= 95.0 Oe

"

B

AC max

b

0.441T

H

AC min

= 4

r

63.5

20 20 -

2

8

S

X

= 63.3 Oe

"

B

AC min

b

0.331T

"

B

pk

= 2

%

B =

2

0.441- 0.331 = 0.055T

PL = (44.3)(0.055

1.988

)(100

1.541

)

,

168 cm

3

mW

P

fe

= (PL)(l

e

)(A

e

)= (168)(63.5)(65.4)(0.001)

,

698mW

H

AC max

= 4

r

63.5

20 +

2

8

S

X

= 15.8 Oe

"

B

AC max

b

0.092T

H

AC min

= 4

r

63.5

20 -

2

8

S

X

= - 15.8 Oe

"

B

AC min

b

-0.092T

"

B

pk

= 2

%

B ~ 0.092T

PL = (44.3)(0.092

1.988

)(100

1.541

)

,

466 cm

3

mW

P

fe

= (PL)(l

e

)(A

e

)= (466)(6.35)(0.654)

,

1.94W

14 15 - old 2 - 9 & 10

H

AC max

= 4

r

63.5

20 20 +

2

2

S

X

= 83.1 Oe

"

B

AC max

b

.404T

H

AC min

= 4

r

63.5

20 20 -

2

2

S

X

= 75.2 Oe

"

B

AC min

b

.377T

"

B

pk

= 2

%

B =

2

0.404 - 0.377 = 0.014T

PL = (44.3)(0.014

1.988

)(100

1.541

)

,

11.0 cm

3

mW

P

fe

= (PL)(

l

e

)(A

e

)~ (11.0)(63.5)(65.4) 1,000mm

3

1cm

3

T

Y

b

46mW

H

AC max

= 4

r

63.5

20 20 +

2

8

S

X

= 95.0 Oe

"

B

AC max

b

0.441T

H

AC min

= 4

r

63.5

20 20 -

2

8

S

X

= 63.3 Oe

"

B

AC min

b

0.331T

"

B

pk

= 2

%

B =

2

0.441- 0.331 = 0.055T

PL = (44.3)(0.055

1.988

)(100

1.541

)

,

168 cm

3

mW

P

fe

= (PL)(l

e

)(A

e

)= (168)(63.5)(65.4)(0.001)

,

698mW

H

AC max

= 4

r

63.5

20 +

2

8

S

X

= 15.8 Oe

"

B

AC max

b

0.092T

H

AC min

= 4

r

63.5

20 -

2

8

S

X

= - 15.8 Oe

"

B

AC min

b

-0.092T

"

B

pk

= 2

%

B ~ 0.092T

PL = (44.3)(0.092

1.988

)(100

1.541

)

,

466 cm

3

mW

P

fe

= (PL)(l

e

)(A

e

)= (466)(6.35)(0.654)

,

1.94W

Magnetics-Powder-Core-Catalog-2020-html.html
background image

www.mag-inc.com

21

Cor
e Selection

Powder Core Loss Calculation

Example 2 - AC current is 40% of DC current:

Approximate the core loss for the same 20-turn inductor, with same inductor current of 20 Amps DC but ripple of 8 Amps peak-

peak at 100kHz .

1 .) Calculate 

H

 and determine 

B

 from BH curve fit equation:

14 15 - old 2 - 9 & 10

H

AC max

= 4

r

63.5

20 20 +

2

2

S

X

= 83.1 Oe

"

B

AC max

b

.404T

H

AC min

= 4

r

63.5

20 20 -

2

2

S

X

= 75.2 Oe

"

B

AC min

b

.377T

"

B

pk

= 2

%

B =

2

0.404 - 0.377 = 0.014T

PL = (44.3)(0.014

1.988

)(100

1.541

)

,

11.0 cm

3

mW

P

fe

= (PL)(

l

e

)(A

e

)~ (11.0)(63.5)(65.4) 1,000mm

3

1cm

3

T

Y

b

46mW

H

AC max

= 4

r

63.5

20 20 +

2

8

S

X

= 95.0 Oe

"

B

AC max

b

0.441T

H

AC min

= 4

r

63.5

20 20 -

2

8

S

X

= 63.3 Oe

"

B

AC min

b

0.331T

"

B

pk

= 2

%

B =

2

0.441- 0.331 = 0.055T

PL = (44.3)(0.055

1.988

)(100

1.541

)

,

168 cm

3

mW

P

fe

= (PL)(l

e

)(A

e

)= (168)(63.5)(65.4)(0.001)

,

698mW

H

AC max

= 4

r

63.5

20 +

2

8

S

X

= 15.8 Oe

"

B

AC max

b

0.092T

H

AC min

= 4

r

63.5

20 -

2

8

S

X

= - 15.8 Oe

"

B

AC min

b

-0.092T

"

B

pk

= 2

%

B ~ 0.092T

PL = (44.3)(0.092

1.988

)(100

1.541

)

,

466 cm

3

mW

P

fe

= (PL)(l

e

)(A

e

)= (466)(6.35)(0.654)

,

1.94W

   

14 15 - old 2 - 9 & 10

H

AC max

= 4

r

63.5

20 20 +

2

2

S

X

= 83.1 Oe

"

B

AC max

b

.404T

H

AC min

= 4

r

63.5

20 20 -

2

2

S

X

= 75.2 Oe

"

B

AC min

b

.377T

"

B

pk

= 2

%

B =

2

0.404 - 0.377 = 0.014T

PL = (44.3)(0.014

1.988

)(100

1.541

)

,

11.0 cm

3

mW

P

fe

= (PL)(

l

e

)(A

e

)~ (11.0)(63.5)(65.4) 1,000mm

3

1cm

3

T

Y

b

46mW

H

AC max

= 4

r

63.5

20 20 +

2

8

S

X

= 95.0 Oe

"

B

AC max

b

0.441T

H

AC min

= 4

r

63.5

20 20 -

2

8

S

X

= 63.3 Oe

"

B

AC min

b

0.331T

"

B

pk

= 2

%

B =

2

0.441- 0.331 = 0.055T

PL = (44.3)(0.055

1.988

)(100

1.541

)

,

168 cm

3

mW

P

fe

= (PL)(l

e

)(A

e

)= (168)(63.5)(65.4)(0.001)

,

698mW

H

AC max

= 4

r

63.5

20 +

2

8

S

X

= 15.8 Oe

"

B

AC max

b

0.092T

H

AC min

= 4

r

63.5

20 -

2

8

S

X

= - 15.8 Oe

"

B

AC min

b

-0.092T

"

B

pk

= 2

%

B ~ 0.092T

PL = (44.3)(0.092

1.988

)(100

1.541

)

,

466 cm

3

mW

P

fe

= (PL)(l

e

)(A

e

)= (466)(6.35)(0.654)

,

1.94W

2 .) Determine core loss density from chart or calculate from loss equation: 

14 15 - old 2 - 9 & 10

H

AC max

= 4

r

63.5

20 20 +

2

2

S

X

= 83.1 Oe

"

B

AC max

b

.404T

H

AC min

= 4

r

63.5

20 20 -

2

2

S

X

= 75.2 Oe

"

B

AC min

b

.377T

"

B

pk

= 2

%

B =

2

0.404 - 0.377 = 0.014T

PL = (44.3)(0.014

1.988

)(100

1.541

)

,

11.0 cm

3

mW

P

fe

= (PL)(

l

e

)(A

e

)~ (11.0)(63.5)(65.4) 1,000mm

3

1cm

3

T

Y

b

46mW

H

AC max

= 4

r

63.5

20 20 +

2

8

S

X

= 95.0 Oe

"

B

AC max

b

0.441T

H

AC min

= 4

r

63.5

20 20 -

2

8

S

X

= 63.3 Oe

"

B

AC min

b

0.331T

"

B

pk

= 2

%

B =

2

0.441- 0.331 = 0.055T

PL = (44.3)(0.055

1.988

)(100

1.541

)

,

168 cm

3

mW

P

fe

= (PL)(l

e

)(A

e

)= (168)(63.5)(65.4)(0.001)

,

698mW

H

AC max

= 4

r

63.5

20 +

2

8

S

X

= 15.8 Oe

"

B

AC max

b

0.092T

H

AC min

= 4

r

63.5

20 -

2

8

S

X

= - 15.8 Oe

"

B

AC min

b

-0.092T

"

B

pk

= 2

%

B ~ 0.092T

PL = (44.3)(0.092

1.988

)(100

1.541

)

,

466 cm

3

mW

P

fe

= (PL)(l

e

)(A

e

)= (466)(6.35)(0.654)

,

1.94W

3 .) Calculate core loss: 

14 15 - old 2 - 9 & 10

H

AC max

= 4

r

63.5

20 20 +

2

2

S

X

= 83.1 Oe

"

B

AC max

b

.404T

H

AC min

= 4

r

63.5

20 20 -

2

2

S

X

= 75.2 Oe

"

B

AC min

b

.377T

"

B

pk

= 2

%

B =

2

0.404 - 0.377 = 0.014T

PL = (44.3)(0.014

1.988

)(100

1.541

)

,

11.0 cm

3

mW

P

fe

= (PL)(

l

e

)(A

e

)~ (11.0)(63.5)(65.4) 1,000mm

3

1cm

3

T

Y

b

46mW

H

AC max

= 4

r

63.5

20 20 +

2

8

S

X

= 95.0 Oe

"

B

AC max

b

0.441T

H

AC min

= 4

r

63.5

20 20 -

2

8

S

X

= 63.3 Oe

"

B

AC min

b

0.331T

"

B

pk

= 2

%

B =

2

0.441- 0.331 = 0.055T

PL = (44.3)(0.055

1.988

)(100

1.541

)

,

168 cm

3

mW

P

fe

= (PL)(l

e

)(A

e

)= (168)(63.5)(65.4)(0.001)

,

698mW

H

AC max

= 4

r

63.5

20 +

2

8

S

X

= 15.8 Oe

"

B

AC max

b

0.092T

H

AC min

= 4

r

63.5

20 -

2

8

S

X

= - 15.8 Oe

"

B

AC min

b

-0.092T

"

B

pk

= 2

%

B ~ 0.092T

PL = (44.3)(0.092

1.988

)(100

1.541

)

,

466 cm

3

mW

P

fe

= (PL)(l

e

)(A

e

)= (466)(6.35)(0.654)

,

1.94W

Note: Core losses result only from AC excitation . DC bias applied to any core does not cause any core losses, regardless of the 

magnitude of the bias .

Example 3 – pure AC, no DC:

Approximate the core loss for the same 20-turn inductor, now with 0 Amps DC and 8 Amps peak-peak at 100kHz .

1 .) Calculate H and determine B from BH curve fit equation:

14 15 - old 2 - 9 & 10

H

AC max

= 4

r

63.5

20 20 +

2

2

S

X

= 83.1 Oe

"

B

AC max

b

.404T

H

AC min

= 4

r

63.5

20 20 -

2

2

S

X

= 75.2 Oe

"

B

AC min

b

.377T

"

B

pk

= 2

%

B =

2

0.404 - 0.377 = 0.014T

PL = (44.3)(0.014

1.988

)(100

1.541

)

,

11.0 cm

3

mW

P

fe

= (PL)(

l

e

)(A

e

)~ (11.0)(63.5)(65.4) 1,000mm

3

1cm

3

T

Y

b

46mW

H

AC max

= 4

r

63.5

20 20 +

2

8

S

X

= 95.0 Oe

"

B

AC max

b

0.441T

H

AC min

= 4

r

63.5

20 20 -

2

8

S

X

= 63.3 Oe

"

B

AC min

b

0.331T

"

B

pk

= 2

%

B =

2

0.441- 0.331 = 0.055T

PL = (44.3)(0.055

1.988

)(100

1.541

)

,

168 cm

3

mW

P

fe

= (PL)(l

e

)(A

e

)= (168)(63.5)(65.4)(0.001)

,

698mW

H

AC max

= 4

r

63.5

20 +

2

8

S

X

= 15.8 Oe

"

B

AC max

b

0.092T

H

AC min

= 4

r

63.5

20 -

2

8

S

X

= - 15.8 Oe

"

B

AC min

b

-0.092T

"

B

pk

= 2

%

B ~ 0.092T

PL = (44.3)(0.092

1.988

)(100

1.541

)

,

466 cm

3

mW

P

fe

= (PL)(l

e

)(A

e

)= (466)(6.35)(0.654)

,

1.94W

   

14 15 - old 2 - 9 & 10

H

AC max

= 4

r

63.5

20 20 +

2

2

S

X

= 83.1 Oe

"

B

AC max

b

.404T

H

AC min

= 4

r

63.5

20 20 -

2

2

S

X

= 75.2 Oe

"

B

AC min

b

.377T

"

B

pk

= 2

%

B =

2

0.404 - 0.377 = 0.014T

PL = (44.3)(0.014

1.988

)(100

1.541

)

,

11.0 cm

3

mW

P

fe

= (PL)(

l

e

)(A

e

)~ (11.0)(63.5)(65.4) 1,000mm

3

1cm

3

T

Y

b

46mW

H

AC max

= 4

r

63.5

20 20 +

2

8

S

X

= 95.0 Oe

"

B

AC max

b

0.441T

H

AC min

= 4

r

63.5

20 20 -

2

8

S

X

= 63.3 Oe

"

B

AC min

b

0.331T

"

B

pk

= 2

%

B =

2

0.441- 0.331 = 0.055T

PL = (44.3)(0.055

1.988

)(100

1.541

)

,

168 cm

3

mW

P

fe

= (PL)(l

e

)(A

e

)= (168)(63.5)(65.4)(0.001)

,

698mW

H

AC max

= 4

r

63.5

20 +

2

8

S

X

= 15.8 Oe

"

B

AC max

b

0.092T

H

AC min

= 4

r

63.5

20 -

2

8

S

X

= - 15.8 Oe

"

B

AC min

b

-0.092T

"

B

pk

= 2

%

B ~ 0.092T

PL = (44.3)(0.092

1.988

)(100

1.541

)

,

466 cm

3

mW

P

fe

= (PL)(l

e

)(A

e

)= (466)(6.35)(0.654)

,

1.94W

Note: Curve fit equations are not valid for negative values of B . Evaluate for the absolute value of B, then reverse the sign of the 

resulting H value .

2 .) Determine core loss density from chart or calculate from loss equation .   

3 .) Calculate core loss:  

Plotted below are the operating ranges for each of the three examples .

Note the significant influence of DC bias on core loss, comparing Example 3 with Example 2 . Lower permeability results in less B

pk

even though the current ripple is the same . This effect can be achieved with DC bias, or by selecting a lower permeability material .

Magnetizing Force (Oe)

60µ Kool Mµ DC Magnetization Curve

1

0.0

0.1

0.2

0.3

0.4

0.5

0.6

10

100

Flux Density (T

esla)

160

147

125

90

75

60

40

26

14

173

200

250

300

550

500

550µ

160µ

H

AC min

H

AC max

B

AC max

B

AC min

B

H

 

Example 1

H

AC min

=75.2

B

AC max

=0.377

H

AC max

=83.1

B

AC max

=0.404

Example 3
H

AC max

=15.8

B

AC max

=0.092

Example 2
H

AC min

=95.0

B

AC max

=0.441

Example 2

H

AC min

= 63.3

B

AC min

= 0.331

14 15 - old 2 - 9 & 10

H

AC max

= 4

r

63.5

20 20 +

2

2

S

X

= 83.1 Oe

"

B

AC max

b

.404T

H

AC min

= 4

r

63.5

20 20 -

2

2

S

X

= 75.2 Oe

"

B

AC min

b

.377T

"

B

pk

= 2

%

B =

2

0.404 - 0.377 = 0.014T

PL = (44.3)(0.014

1.988

)(100

1.541

)

,

11.0 cm

3

mW

P

fe

= (PL)(

l

e

)(A

e

)~ (11.0)(63.5)(65.4) 1,000mm

3

1cm

3

T

Y

b

46mW

H

AC max

= 4

r

63.5

20 20 +

2

8

S

X

= 95.0 Oe

"

B

AC max

b

0.441T

H

AC min

= 4

r

63.5

20 20 -

2

8

S

X

= 63.3 Oe

"

B

AC min

b

0.331T

"

B

pk

= 2

%

B =

2

0.441- 0.331 = 0.055T

PL = (44.3)(0.055

1.988

)(100

1.541

)

,

168 cm

3

mW

P

fe

= (PL)(l

e

)(A

e

)= (168)(63.5)(65.4)(0.001)

,

698mW

H

AC max

= 4

r

63.5

20 +

2

8

S

X

= 15.8 Oe

"

B

AC max

b

0.092T

H

AC min

= 4

r

63.5

20 -

2

8

S

X

= - 15.8 Oe

"

B

AC min

b

-0.092T

"

B

pk

= 2

%

B ~ 0.092T

PL = (44.3)(0.092

1.988

)(100

1.541

)

,

466 cm

3

mW

P

fe

= (PL)(l

e

)(A

e

)= (466)(6.35)(0.654)

,

1.94W

14 15 - old 2 - 9 & 10

H

AC max

= 4

r

63.5

20 20 +

2

2

S

X

= 83.1 Oe

"

B

AC max

b

.404T

H

AC min

= 4

r

63.5

20 20 -

2

2

S

X

= 75.2 Oe

"

B

AC min

b

.377T

"

B

pk

= 2

%

B =

2

0.404 - 0.377 = 0.014T

PL = (44.3)(0.014

1.988

)(100

1.541

)

,

11.0 cm

3

mW

P

fe

= (PL)(

l

e

)(A

e

)~ (11.0)(63.5)(65.4) 1,000mm

3

1cm

3

T

Y

b

46mW

H

AC max

= 4

r

63.5

20 20 +

2

8

S

X

= 95.0 Oe

"

B

AC max

b

0.441T

H

AC min

= 4

r

63.5

20 20 -

2

8

S

X

= 63.3 Oe

"

B

AC min

b

0.331T

"

B

pk

= 2

%

B =

2

0.441- 0.331 = 0.055T

PL = (44.3)(0.055

1.988

)(100

1.541

)

,

168 cm

3

mW

P

fe

= (PL)(l

e

)(A

e

)= (168)(63.5)(65.4)(0.001)

,

698mW

H

AC max

= 4

r

63.5

20 +

2

8

S

X

= 15.8 Oe

"

B

AC max

b

0.092T

H

AC min

= 4

r

63.5

20 -

2

8

S

X

= - 15.8 Oe

"

B

AC min

b

-0.092T

"

B

pk

= 2

%

B ~ 0.092T

PL = (44.3)(0.092

1.988

)(100

1.541

)

,

466 cm

3

mW

P

fe

= (PL)(l

e

)(A

e

)= (466)(6.35)(0.654)

,

1.94W

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Cor

e Selection

MAGNETICS

22

Powder Core Loss Calculation

Method 2 – For small  H, approximate B

pk 

from effective perm with DC bias . B

pk 

= f(

µ

e

,  H)

The instantaneous slope of the BH curve is defined as the absolute permeability, which is the product of permeability of free space 

0

=

4

r

 x10

-7

) and the material permeability (µ), which varies along the BH curve . For small AC, this slope can be modeled as a 

constant throughout AC excitation, with µ approximated as the effective perm at DC bias (µ

e

):

16 - old 2 - 11

r

a

dH

dB =

µ

0

µ

e

"

%

H

%

B =

µ

0

µ

e

"

%

B =

µ

0

µ

e

%

H

B

pk

= 2

%

B = 0 .5

Q V

µ

0

µ

e

%

H

B

pk

= 0 .5

Q V

µ

0

Q V

i

Q

V

µ

i

Q V

4

r

1000

S

X

%

H

Q

V

where

%

H = 4

r

l

e

N

%

I

H

D C

= 4

r

63 .5

20

20

Q V

"

%

= 79 .2 Oe

"

from curve or curve fit equation, %

µ

i

= 0 .58

µ

i

= 60

%

H = 4

r

l

e

N

%

I = 4

r

63 .5

20 (2)

= 7 .9 Oe

B

pk

= 0 .5 (4

r

x 10

-7

) (0 .58) (60)

4

r

1000

S

X

(7 .9)

b

0 .014T

(this compares to 0 .014T using M ethod 1)

The effective perm with DC bias is shown in this catalog as % of initial perm, (%µ

i

)(µ

i

) . This can be obtained from the DC bias curve 

or curve fit equation, (pgs . 34 - 41) .

16 - old 2 - 11

r

a

dH

dB =

µ

0

µ

e

"

%

H

%

B =

µ

0

µ

e

"

%

B =

µ

0

µ

e

%

H

B

pk

= 2

%

B = 0 .5

Q V

µ

0

µ

e

%

H

B

pk

= 0 .5

Q V

µ

0

Q V

i

Q

V

µ

i

Q V

4

r

1000

S

X

%

H

Q

V

where

%

H = 4

r

l

e

N

%

I

H

D C

= 4

r

63 .5

20

20

Q V

"

%

= 79 .2 Oe

"

from curve or curve fit equation, %

µ

i

= 0 .58

µ

i

= 60

%

H = 4

r

l

e

N

%

I = 4

r

63 .5

20 (2)

= 7 .9 Oe

B

pk

= 0 .5 (4

r

x 10

-7

) (0 .58) (60)

4

r

1000

S

X

(7 .9)

b

0 .014T

(this compares to 0 .014T using M ethod 1)

H is multiplied by 1000 because H units here are Oersteds and B units are Tesla .

Reworking Example 1

 (20 Amps DC, 2 Amps pk-pk)

16 - old 2 - 11

r

a

dH

dB =

µ

0

µ

e

"

%

H

%

B =

µ

0

µ

e

"

%

B =

µ

0

µ

e

%

H

B

pk

= 2

%

B = 0 .5

Q V

µ

0

µ

e

%

H

B

pk

= 0 .5

Q V

µ

0

Q V

i

Q

V

µ

i

Q V

4

r

1000

S

X

%

H

Q

V

where

%

H = 4

r

l

e

N

%

I

H

D C

= 4

r

63 .5

20

20

Q V

"

%

= 79 .2 Oe

"

from curve or curve fit equation, %

µ

i

= 0 .58

µ

i

= 60

%

H = 4

r

l

e

N

%

I = 4

r

63 .5

20 (2)

= 7 .9 Oe

B

pk

= 0 .5 (4

r

x 10

-7

) (0 .58) (60)

4

r

1000

S

X

(7 .9)

b

0 .014T

(this compares to 0 .014T using M ethod 1)

Reworking Example 2

 (20 Amps DC, 8 Amps pk-pk)

 

From example 1, 

H

DC

= 79.2 Oe

;

i

= 0.58;

µ

i

= 60

%

H = 4

r

l

e

N

%

I = 4

r

63.5

20(8) = 31.7Oe

B

pk

= 0.5(4

r

x10

-7

)(0.58)(60)

4

r

1000

S

X

(31.7)= 0.055T (this compares to 0.055T using Method1)

%

H= 31.7 Oe

H

DC

= 0

i

=1.0

B

pk

= 0.5(4

r

x10

-7

)(1)(60)

4

r

1000

S

X

(31.7)= 0.095T (this compares to 0.092T using Method1)

Reworking Example 3 

(0 Amps DC, 8 Amps pk-pk) 

 

From example 2,

H

DC

= 79.2 Oe

;

i

= 0.58;

µ

i

= 60

%

H = 4

r

l

e

N

%

I = 4

r

63.5

20(8) = 31.7Oe

B

pk

= 0.5(4

r

x10

-7

)(0.58)(60)

4

r

1000

S

X

(31.7)= 0.055T (this compares to 0.055T using Method1)

%

H= 31.7 Oe

H

DC

= 0

i

=1.0

B

pk

= 0.5(4

r

x10

-7

)(1)(60)

4

r

1000

S

X

(31.7)= 0.095T (this compares to 0.092T using Method1)

4

r

Magnetics-Powder-Core-Catalog-2020-html.html
background image

www.mag-inc.com

23

Cor
e Selection

Powder Core Loss Calculation

Method 3 – For small  H, determine B

pk

 from biased inductance . B

pk

=f(L,I)

B can be rewritten in terms of inductance by considering Faraday’s equation and its effect on inductor current:

17 - old 2 - 12

V

L

= NA dt

dB =L

dt

dI

"

dB = NA

L dI

%

B = NA

L

DC

%

I

"

B

pk

= 2NA

e

L

DC

%

I

"

dH

dB =

NA

L

dH

dI

"

dH

dB =

N

2

A

e

L

I

e

%

H

%

B =

N

2

A

e

L

DC

I

e

"

%

B = N

2

A

e

L

DC

l

e

%

H= NA

e

L

DC

%

I

"

%

B

pk

= 2NA

e

L

DC

%

I

L varies non-linearly with I . For small AC, L can be assumed constant throughout AC excitation and is approximated by the biased 

inductance (L

DC

) .

17 - old 2 - 12

V

L

= NA dt

dB =L

dt

dI

"

dB = NA

L dI

%

B = NA

L

DC

%

I

"

B

pk

= 2NA

e

L

DC

%

I

"

dH

dB =

NA

L

dH

dI

"

dH

dB =

N

2

A

e

L

I

e

%

H

%

B =

N

2

A

e

L

DC

I

e

"

%

B = N

2

A

e

L

DC

l

e

%

H= NA

e

L

DC

%

I

"

%

B

pk

= 2NA

e

L

DC

%

I

Another way of looking at this is by rewriting the relationship between B and L as:

17 - old 2 - 12

V

L

= NA dt

dB =L

dt

dI

"

dB = NA

L dI

%

B = NA

L

DC

%

I

"

B

pk

= 2NA

e

L

DC

%

I

"

dH

dB =

NA

L

dH

dI

"

dH

dB =

N

2

A

e

L

I

e

%

H

%

B =

N

2

A

e

L

DC

I

e

"

%

B = N

2

A

e

L

DC

l

e

%

H= NA

e

L

DC

%

I

"

%

B

pk

= 2NA

e

L

DC

%

I

Substituting (dH/dI)  with (N/

l

e

)  and A with A

e

:

17 - old 2 - 12

V

L

= NA dt

dB =L

dt

dI

"

dB = NA

L dI

%

B = NA

L

DC

%

I

"

B

pk

= 2NA

e

L

DC

%

I

"

dH

dB =

NA

L

dH

dI

"

dH

dB =

N

2

A

e

L

I

e

%

H

%

B =

N

2

A

e

L

DC

I

e

"

%

B = N

2

A

e

L

DC

l

e

%

H= NA

e

L

DC

%

I

"

%

B

pk

= 2NA

e

L

DC

%

I

L varies non-linearly with H . For small AC, the slope of the BH curve is assumed constant throughout AC excitation, and L is 

approximated by the biased inductance (L

DC

) .

17 - old 2 - 12

V

L

= NA dt

dB =L

dt

dI

"

dB = NA

L dI

%

B = NA

L

DC

%

I

"

B

pk

= 2NA

e

L

DC

%

I

"

dH

dB =

NA

L

dH

dI

"

dH

dB =

N

2

A

e

L

I

e

%

H

%

B =

N

2

A

e

L

DC

I

e

"

%

B = N

2

A

e

L

DC

l

e

%

H= NA

e

L

DC

%

I

"

%

B

pk

= 2NA

e

L

DC

%

I

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Cor

e Selection

MAGNETICS

24

Powder Core Loss Calculation

Magnetizing Force (Oe)

60µ Kool Mµ DC Magnetization

60

65

70

75

80

85

95

90

100

0.47

0.45

0.43

0.41

0.39

0.37

0.35

0.33

0.31

0.29

Flux Density (T

esla)

160

147

125

90

75

60

40

26

14

173

200

250

300

550

500

550µ

160µ

H

AC min

H

AC max

B

H

 

Method 2

H

DC  

    31.7

2

Method 2
H

DC  

Method 1
H

AC max 

Method 1
H

AC min   

79.2

=

Method 2

H

DC

  

    31.7

2

+

Reworking Example 1:

18 - old 2 - 13

L

nl

(no load)= (A

L

)(N

2

)= (75 nH/T

2

)(20

2

) = 30µH

L

DC

(20A)= (%µ

i

)(L

nl

)= (0.58)(30)= 17.4µH

"

B

pk

= 2(20)(65.4)(10

-6

)

(17.4)(10

-6

)(2) =0.013T (this compares to0.014TperMethod1; 0.014TperMethod2).

From example1, L

DC

= 17.4µH

"

B

pk

= 2(20)(65.4)(10

-6

)

(17.4)(10

-6

)(8) =0.053T (this compares to0.055TperMethod1; 0.055TperMethod2).

L

DC

= L

nl

= 30µH

"

B

pk

= 2(20)(65.4)(10

-6

)

(30)(10

-6

)(8) =0.092T (this compares to0.092TperMethod1; 0.095TperMethod2).

Reworking Example 2:

18 - old 2 - 13

L

nl

(no load)= (A

L

)(N

2

)= (75 nH/T

2

)(20

2

) = 30µH

L

DC

(20A)= (%µ

i

)(L

nl

)= (0.58)(30)= 17.4µH

"

B

pk

= 2(20)(65.4)(10

-6

)

(17.4)(10

-6

)(2) =0.013T (this compares to0.014TperMethod1; 0.014TperMethod2).

From example1, L

DC

= 17.4µH

"

B

pk

= 2(20)(65.4)(10

-6

)

(17.4)(10

-6

)(8) =0.053T (this compares to0.055TperMethod1; 0.055TperMethod2).

L

DC

= L

nl

= 30µH

"

B

pk

= 2(20)(65.4)(10

-6

)

(30)(10

-6

)(8) =0.092T (this compares to0.092TperMethod1; 0.095TperMethod2).

Reworking Example 3:

18 - old 2 - 13

L

nl

(no load)= (A

L

)(N

2

)= (75 nH/T

2

)(20

2

) = 30µH

L

DC

(20A)= (%µ

i

)(L

nl

)= (0.58)(30)= 17.4µH

"

B

pk

= 2(20)(65.4)(10

-6

)

(17.4)(10

-6

)(2) =0.013T (this compares to0.014TperMethod1; 0.014TperMethod2).

From example1, L

DC

= 17.4µH

"

B

pk

= 2(20)(65.4)(10

-6

)

(17.4)(10

-6

)(8) =0.053T (this compares to0.055TperMethod1; 0.055TperMethod2).

L

DC

= L

nl

= 30µH

"

B

pk

= 2(20)(65.4)(10

-6

)

(30)(10

-6

)(8) =0.092T (this compares to0.092TperMethod1; 0.095TperMethod2).

After B

pk 

is found using Method 1, Method 2, or Method 3, then it is simple to use to use the core loss curve or curve fit equation to find 

the core loss density (PL) for the known drive frequency . The plot below illustrates the difference between Method 1 and Method 2

Magnetics-Powder-Core-Catalog-2020-html.html
background image

www.mag-inc.com

25

Cor
e Selection

Core Selector Charts

The core selector charts are a quick guide to finding the 
optimum permeability and smallest core size for DC bias 
applications . 

These charts are based on a permeability reduction (and 
therefore inductance) of not more than 50% with DC bias; typical 
winding factors of 40% for toroids, 60% for E cores and U cores, 
and 75% for EQ cores (helical coil assumed); and an AC current 
that is small relative to the DC current . These charts are based 
on the nominal core inductance and a current density 400-1000 
A/cm

2

:

Kool Mµ

400 A/cm

2

Kool Mµ MAX

600 A/cm

2

Kool Mµ Hƒ

400 A/cm

2

XF

lux

600 A/cm

2

High Flux

600 A/cm

2

Edge

400 A/cm

2

MPP

400 A/cm

2

Kool Mµ E Cores

400 A/cm

2

XF

lux

 E Cores

600 A/cm

2

Kool Mµ U Cores

400 A/cm

2

Kool Mu EQ Cores

1000 A/cm

2

XF

lux

 

EQ Cores

1000 A/cm

2

High Flux EQ Cores

1000 A/cm

2

 

If a core is being selected for use with a large AC current 
relative to any DC current, such as a flyback inductor or buck/
boost inductor, frequently a larger core will be needed to limit 
the core losses due to AC flux . In other words, the design 
becomes loss-limited rather than bias-limited .

For additional power handling capability, stacking of cores will 
yield a proportional increase in power handling . For example, 
double stacking of the 55908 core will result in doubled power 
handling capability to about 400 mH·A

2

 .

Cores with increased heights are easily ordered . Contact 
Magnetics for more information .

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Cor

e Selection

MAGNETICS

26

Core Selector Charts

Kool Mµ

®

 Toroids

0.0001

0.001

0.01

0.1

1

10

100

1,000 3,000

LI² (mH·A²)

 

125 perm

90

100

75

60

40

50

26

25

160

147

14
173

200

250

300

550

500

90µ

14µ

125µ

26µ

60µ

40µ

77336 p. 127
77735 p. 122
77908 p. 124
77616 p. 120
77212 p. 118
77192 p. 119
77439 p. 115
77083 p. 112
77071 p. 109
77934 p. 108
77314 p. 106
77120 p. 103
77050 p. 102
77040 p. 100
77280 p. 98
77030 p. 97
77240 p. 94
77180 p. 92
77140 p. 90

77164 p. 128
77102 p. 126
77776 p. 125
77868 p. 123
77074 p. 121
77726 p. 116
77721 p. 117
77095 p. 114
77076 p. 111
77586 p. 110
77354 p. 107
77210 p. 105
77380 p. 104
77130 p. 101
77290 p. 99
77410 p. 96
77270 p. 95
77020 p. 93
77150 p. 91

Kool Mµ

®

 MAX Toroids

WAITING FOR 
CHART

0.1

1

10

1,000

2,000

100

 

125 perm

90

100

75

60

40

50

26

25

160

147

14
173

200

250

300

550

500

26µ

60µ

79102 p. 126

79908 p. 124

79617 p. 120

79110 p. 118

79716 p. 117

79439 p. 115

79076 p. 111

79071 p. 109

79351 p. 107

79848 p. 105

79381 p. 104

79337 p. 127

79735 p. 122

79868 p. 123

79074 p. 121

79192 p. 119

79090 p. 114

79083 p. 112

79586 p. 110

79894 p. 108

79059 p. 106

79121 p. 103

79051 p. 102

LI² (mH·A²)

Magnetics-Powder-Core-Catalog-2020-html.html
background image

www.mag-inc.com

27

Cor
e Selection

Core Selector Charts

Kool Mµ

® 

Hƒ Toroids

0.1

1

10

100

 

LI² (mH·A²)

60µ

76076
p. 111

 

76071
p. 109

 

76351
p. 107

 

76848
p. 105

 

76381
p. 104

76083 
p. 112

 

76586 
p. 110

 

76894 
p. 108

 

76059 
p. 106

 

76121 
p. 103

 

76051 
p. 102

0.5

1

10

100

1,000

7,000

 

125 perm

90

100

75

60

40

50

26

25

160

147

14
173

200

250

300

550

500

LI² (mH·A²)

90µ

75µ

26µ

60µ

40µ

78337 p. 127

78737 p. 122

78907 p. 124

78618 p. 120

78110 p. 118

78193 p. 119

78094 p. 114

78259 p. 112

78590 p. 110

78934 p. 108

78314 p. 106

78384 p. 104

  

78100 p. 126

78777 p. 125

78867 p. 123

78072 p. 121

78729 p. 116

78720 p. 117

78443 p. 115

78329 p. 111

78553 p. 109

78354 p. 107

78210 p. 105

78224 p. 103

XF

lux

®

 Toroids

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Cor

e Selection

MAGNETICS

28

Core Selector Charts

Cor

e Selection

0.001

0.01

0.1

1

10

100

1,000

10,000

 

125 perm

90

100

75

60

40

50

26

25

160

147

14
173

200

250

300

550

500

LI² (mH·A²)

160µ

125µ

26µ

60µ

40µ

58337 p. 127

58737 p. 122

58867 p. 123

58110 p. 118

58716 p. 117

58090 p. 114

58324 p. 111

58585 p. 110

58348 p. 107

58204 p. 105

58378 p. 104

58128 p. 101

58288 p. 99

58408 p. 96

58268 p. 95

58018 p. 93

58165 p. 128

58100 p. 126

58907 p. 124

58617 p. 120

58195 p. 119

58438 p. 115

58254 p. 112

58548 p. 109

58928 p. 108

58308 p. 106

58118 p. 103

58048 p. 102

58038 p. 100

58278 p. 98

58028 p. 97

58238 p. 94

High Flux Toroids

0.1

1

10

100

 

LI² (mH·A²)

60µ

59076
p. 111

 

59071
p. 109

 

59351
p. 107

 

59848
p. 105

 

59381
p. 104

59083 
p. 112

 

59586 
p. 110

 

59894 
p. 108

 

59059 
p. 106

 

59121 
p. 103

  

59051 
p. 102

Edge

®

 Toroids

Magnetics-Powder-Core-Catalog-2020-html.html
background image

www.mag-inc.com

29

Cor
e Selection

Core Selector Charts

0.001

0.01

0.1

1

10

100

1,000

5,000

55336 p. 127
55735 p. 122
55908 p. 124
55617 p. 120
55726 p. 116
55716 p. 117
55439 p. 115
55076 p. 111
55071 p. 109
55350 p. 107
55206 p. 105
55117 p. 103
55127 p. 101

55285 p. 99
55405 p. 96
55265 p. 95
55015 p. 93
55145 p. 91

55164 p. 128
55102 p. 126
55777 p. 125
55868 p. 123
55110 p. 118
55192 p. 119
55090 p. 114
55083 p. 112
55586 p. 110
55930 p. 108
55310 p. 106
55377 p. 104
55047 p. 102
55035 p. 100
55275 p. 98
55025 p. 97
55235 p. 94
55175 p. 92
55135 p. 90 

 

300µ

200µ

125µ

26µ

60µ

14µ

125 perm

90

100

75

60

40

50

26

25

160

147

14
173

200

250

300

550

500

LI² (mH·A²)

MPP Toroids

Kool Mµ

®

 E Cores

0.1

1

10

100

1,000

3,000

 

125 perm

90

100

75

60

40

50

26

25

160

147

14
173

200

250

300

550

500

LI² (mH·A²)

26µ

60µ

90µ

40µ

00K130LE026

p. 130

00K8044E026

p. 130

00K6527E060

p. 130

00K5530E060

p. 130

00K4022E090

p. 130

00K4020E060

p. 130

00K3515E090

p. 130

00K2510E090

p. 130

00K160LE026 
p. 130

00K114LE040 
p. 130

00K8020E040 
p. 130

00K7228E060 
p. 130

00K5528E060 
p. 130

00K4017E060 
p. 130

00K4317E090 
p. 130

00K3007E090 
p. 130

00K1808E090 
p. 130

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Core Selector Charts

Cor

e Selection

MAGNETICS

30

1

10

100

1,000

26µ

90µ

00K8020U026

p. 132

00K7236U026

p. 132

00K5529U026

p. 132

00K4119U090

p. 132

00K4110U090

p. 132

00K8038U026
p. 132

00K6527U026
p. 132

00K6533U026
p. 132

00K5527U026
p. 132

00K4111U090
p. 132

00K3112U090
p. 132

125 perm

90

100

75

60

40

50

26

25

160

147

14
173

200

250

300

550

500

LI² (mH·A²)

Kool Mµ

®

 U Cores

XF

lux

®

 E Cores

0.1

1

10

100

1,000

3,000

 

125 perm

90

100

75

60

40

50

26

25

160

147

14
173

200

250

300

550

500

LI² (mH·A²)

26µ

60µ

00X114LE060 
p. 130

00X8020E060 
p. 130

00X7228E060 
p. 130

00X5528E060 
p. 130

00X4022E060 
p. 130

00X4317E060 
p. 130

00X1808E060 
p. 130

00X8044E026

p. 130

00X6527E060

p. 130

00X5530E060

p. 130

00X4017E060 

p. 130

00X4020E060

p. 130

00X3515E060

p. 130

Magnetics-Powder-Core-Catalog-2020-html.html
background image

0.00 mm O.D.

www.mag-inc.com

31

Cor
e Selection

Core Selector Charts

XF

lux

®

 EQ Cores

60µ

40µ

EQX4128E040L199

p. 133

 

 

EQX3222E060L152

p. 133

 

 

EQX3222E060L101

p. 133

 

EQX2619E060L101

p. 133

 

EQX2619E060L070

p. 133

EQX5032E040L250 
p. 133

 

EQX3626E040L174 
p. 133

 

EQX3626E060L110 
p. 133

 

EQX2619E060L124 
p. 133

 

EQX2619E060L088 
p. 133

10

100

1,000

 

LI² (mH·A²)

Kool Mµ

®

 EQ Cores

Cor
e Selection

 

60µ

26µ

40µ

EQK4128E026L199

p. 133

 

 

EQK3222E040L152

p. 133

 

 

EQK3222E040L101

p. 133

 

EQK2619E060L101

p. 133

 

EQK2619E060L070

p. 133

EQK5032E026L250 
p. 133

 

EQK3626E040L174 
p. 133

 

EQK3626E040L110 
p. 133

 

EQK2619E040L124 
p. 133

 

EQK2619E060L088 
p. 133

10

100

500

LI² (mH·A²)

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Core Selector Charts

Cor

e Selection

MAGNETICS

32

High Flux EQ Cores

 

60µ

40µ

EQH4128E040L199

p. 133

 

 

EQH3222E060L152

p. 133

 

 

EQH3222E060L101

p. 133

 

EQH2619E060L101

p. 133

 

EQH2619E060L070

p. 133

EQH5032E040L250 
p. 133

 

EQH3626E040L174 
p. 133

 

EQH3626E060L110 
p. 133

 

EQH2619E060L124 
p. 133

 

EQH2619E060L088 
p. 133

10

100

800

LI² (mH·A²)

Magnetics-Powder-Core-Catalog-2020-html.html
background image

0.00 mm O.D.

www.mag-inc.com

33

Cor
e Selection

Wire Table

AWG

Wire Size

Resistance

Q

/meter

Wire

O.D. (cm)

Heavy Build

Wire Area 

cm

2

Current Capacity, Amps

(listed by columns of Amps/cm

2

)

200

400

500

600

800

6

.00130

.421

0.1392

26.6

53.2

66.5

79.8

106

7

.00163

.376

0.1110

21.1

42.2

52.8

63.3

84.4

 8  

.00206

.336

0.0887

16.7

33.5

41.8

50.2

66.9

 9  

.00260

.299

0.0702

13.3

26.5

33.2

39.8

53.1

 10  

.00328

.267

0.0560

10.5

21.0

26.3

31.6

42.1

 11  

.00414

.238

0.0445

8.34

16.7

20.8

25.0

33.3

 12  

.00521

.213

0.0356

6.62

13.2

16.5

19.8

26.5

 13  

.00656

.1902

0.0284

5.25

10.5

13.1

15.8

21.0

 14  

.00828

.1715

0.0231

4.16

8.33

10.4

12.5

16.7

 15  

.01044

.1529

0.01840

3.30

6.61

8.26

9.91

13.2

 16  

.01319

.1369

0.01472

2.62

5.23

6.54

7.85

10.5

 17  

.01658

.1224

0.01177

2.08

4.16

5.20

6.24

8.32

 18  

.02095

.1095

0.00942

1.65

3.29

4.11

4.94

6.58

 19  

.02640

.0980

0.00754

1.31

2.61

3.27

3.92

5.22

 20  

.03323

.0879

0.00607

1.04

2.08

2.59

3.11

4.15

 21  

.04190

.0785

0.00484

0.823

1.65

2.06

2.47

3.29

 22  

.05315

.0701

0.00386

0.649

1.30

1.62

1.95

2.59

 23  

.06663

.0632

0.00314

0.518

1.04

1.29

1.55

2.07

 24  

.08422

.0566

0.00252

0.409

0.819

1.0236

1.23

1.64

 25  

.10620

.0505

0.00200

0.325

0.649

0.812

0.974

1.30

 26  

.13458

.0452

0.00160

0.256

0.512

0.641

0.769

1.02

 27  

.16873

.0409

0.00131

0.204

0.409

0.511

0.613

0.817

 28  

0.214

.0366

0.00105

0.161

0.322

0.402

0.483

0.644

 29  

0.266

.0330

0.000855

0.129

0.259

0.324

0.388

0.518

 30  

0.340

.0295

0.000683

0.101

0.203

0.253

0.304

0.405

 31  

0.429

.0267

0.000560

0.0803

0.161

0.201

0.241

0.321

 32  

0.532

.0241

0.000456

0.0649

0.130

0.162

0.195

0.259

 33  

0.675

.0216

0.000366

0.0511

0.102

0.128

0.153

0.204

 34  

0.857

.01905

0.000285

0.0402

0.0804

0.101

0.121

0.161

 35  

1.085

.01702

0.000228

0.0318

0.0636

0.0795

0.0953

0.127

 36  

1.361

.01524

0.000182

0.0253

0.0507

0.0633

0.0760

0.101

 37  

1.680

.01397

0.000153

0.0205

0.0410

0.0513

0.0616

0.0821

 38  

2.13

.01245

0.000122

0.0162

0.0324

0.0405

0.0486

0.0649

 39  

2.78

.01092

0.000094

0.0124

0.0248

0.0310

0.0372

0.0497

 40  

3.54

.00965

0.000073

0.00974

0.0195

0.0243

0.0292

0.0390

 41  

4.34

.00864

0.000059

0.00795

0.0159

0.0199

0.0238

0.0318

 42  

5.44

.00762

0.000046

0.00633

0.0127

0.0158

0.0190

0.0253

 43  

7.03

.00686

0.000037

0.00490

0.00981

0.0123

0.0147

0.0196

 44  

8.51

.00635

0.000032

0.00405

0.00811

0.0101

0.0122

0.0162

 45  

10.98

.00546

0.000023

0.00314

0.00628

0.00785

0.00942

0.0126

 46  

13.80

.00498

0.000019

0.00250

0.00500

0.00624

0.00749

0.00999

 47  

17.36

.00452

0.000016

0.00199

0.00397

0.00497

0.00596

0.00795

 48  

22.10

.00394

0.000012

0.00156

0.00312

0.00390

0.00467

0.00623

 49  

27.60

.00353

0.000010

0.00125

0.00250

0.00312

0.00375

0.00499

Cor
e Selection

Magnetics-Powder-Core-Catalog-2020-html.html
background image

MAGNETICS

34

Permeability versus DC Bias Curves

Kool Mµ

®

 MAX Toroids

100

200

300

500 700

1

2

3

5

7

40%

30%

50%

60%

70%

80%

90%

100%

10

20

30

50

70

% Initial Permeability (

µ

i

)

DC-Magnetizing Field (Oe)

90µ

75µ

60µ

40µ

26µ

14µ

125µ

Kool Mµ

® 

Toroids

100

800

10

20

30

50

70

200

300

500

40%

30%

50%

60%

70%

80%

90%

100%

% Initial Permeability (

µ

i

)

DC-Magnetizing Field (Oe)

14µ

19µ

26µ

40µ

60µ

Material Data

Magnetics-Powder-Core-Catalog-2020-html.html
background image

0.00 mm O.D.

www.mag-inc.com

35

Cor
e Selection

Permeability versus DC Bias Curves

Kool Mµ

®

 Hƒ Toroids

XF

lux

® 

Toroids

50%

40%

30%

60%

70%

80%

90%

100%

10

20

30

50

70

100

200

300

500

700

1000

% Initial Permeability (

µ

i

)

DC-Magnetizing Field (Oe)

60µ

75µ

90µ

125µ

26µ

40µ

19µ

30%

40%

50%

60%

70%

90%

80%

100%

% Initial Permeability (

µ

i

)

10

20

30

50

70

100

200

300

500

DC-Magnetizing Field (Oe)

60µ

26µ

Material Data

Magnetics-Powder-Core-Catalog-2020-html.html
background image

MAGNETICS

36

30%

40%

50%

60%

70%

90%

80%

100%

% Initial Permeability (

µ

i

)

10

20

30

50

70

200

300

500 600

100

DC-Magnetizing Field (Oe)

60µ

26µ

30%

40%

50%

60%

70%

80%

90%

10

20

30

50

70

100

200

300

500 700 1000

1

2

3

5

7

% Initial Permeability (

µ

i

)

100%

DC-Magnetizing Field (Oe)

14µ

26µ

40µ

60µ

125µ

160µ

147µ

Edge

® 

Toroids

High Flux Toroids

Permeability versus DC Bias Curves

Material Data

Magnetics-Powder-Core-Catalog-2020-html.html
background image

0.00 mm O.D.

www.mag-inc.com

37

Cor
e Selection

Permeability versus DC Bias Curves

30%

40%

50%

60%

70%

90%

80%

100%

% Initial Permeability (

µ

i

)

1

2

3

7

5

100

200

300

500 700

10

20

30

50

70

DC-Magnetizing Field (Oe)

147µ

125µ

60µ

26µ 

14µ 

160µ

173µ

200µ

30%

40%

50%

60%

70%

90%

80%

100%

% Initial Permeability (

µ

i

)

0.1

0.2

0.3

0.5

0.7

2

1

3

5

7

10

20

30

40

DC-Magnetizing Field (Oe)

550µ

300µ

MPP Toroids 14µ - 200µ

MPP Toroids 300µ & 550µ

Material Data

Magnetics-Powder-Core-Catalog-2020-html.html
background image

MAGNETICS

38

Permeability versus DC Bias Curves

Kool Mµ

®

 E Cores, U Cores & Blocks

XF

lux

®

 E Cores, U Cores & Blocks 

50%

40%

30%

60%

70%

80%

90%

100%

1

2

3

5

7

10

20

30

50

70

100

200

300

500

% Initial Permeability (

µ

i

)

DC-Magnetizing Field (Oe)

60µ

90µ

26µ

40µ

14µ

 

50%

40%

30%

60%

70%

80%

90%

100%

10

20

30

50

70

100

200

300

600

500

% Initial Permeability (

µ

i

)

DC-Magnetizing Field (Oe)

60µ

26µ

40µ

 

Material Data

Magnetics-Powder-Core-Catalog-2020-html.html
background image

0.00 mm O.D.

www.mag-inc.com

39

Cor
e Selection

Permeability versus DC Bias Curves

XF

lux

®

 EQ Cores

Kool Mµ

®

 EQ Cores

50%

40%

30%

60%

70%

80%

90%

100%

1

2

3

5

7

10

20

30

50

70

100

200

300

500

% Initial Permeability (

µ

i

)

DC-Magnetizing Field (Oe)

60µ

26µ

40µ

50%

40%

30%

60%

70%

80%

90%

100%

10

20

30

50

70

100

200

300

600

500

% Initial Permeability (

µ

i

)

DC-Magnetizing Field (Oe)

60µ

26µ

40µ

 

Material Data

Magnetics-Powder-Core-Catalog-2020-html.html
background image

MAGNETICS

40

Permeability versus DC Bias Curves

High Flux EQ Cores

50%

40%

30%

60%

70%

80%

90%

100%

10

20

30

50

70

100

200

300

500 600

% Initial Permeability (

µ

i

)

DC-Magnetizing Field (Oe)

60µ

26µ

40µ

 

Material Data

Magnetics-Powder-Core-Catalog-2020-html.html
background image

0.00 mm O.D.

www.mag-inc.com

41

Perm

a

b

c

Kool Mµ

®  

Toroids

14µ

0.01

4.938E-08

2.000

26µ

0.01

5.266E-07

1.819

40µ

0.01

2.177E-06

1.704

60µ

0.01

2.142E-06

1.855

75µ

0.01

3.885E-06

1.819

90µ

0.01

5.830E-06

1.819

125µ

0.01

2.209E-05

1.636

Kool Mµ

® 

MAX 

Toroids

14µ

0.01

8.274E-09

2.239

19µ

0.01

3.136E-08

2.111

26µ

0.01

3.444E-08

2.205

40µ

0.01

5.919E-07

1.855

60µ

0.01

5.917E-07

2.000

Kool Mµ

® 

Hƒ 

Toroids

26µ

0.01

3.556E-08

2.213

60µ

0.01

4.064E-07

2.131

X

F

lux

® 

Toroids

19µ

0.01

4.976E-09

2.236

26µ

0.01

6.304E-10

2.714

40µ

0.01

1.843E-08

2.358

60µ

0.01

1.489E-08

2.613

75µ

0.01

2.269E-08

2.649

90µ

0.01

9.841E-08

2.477

125µ

0.01

2.687E-07

2.477

High Flux 

Toroids

14µ

0.01

3.389E-08

1.923

26µ

0.01

4.205E-09

2.426

40µ

0.01

1.841E-08

2.409

60µ

0.01

6.413E-08

2.291

125µ

0.01

1.403E-07

2.465

147µ

0.01

1.207E-06

2.131

160µ

0.01

1.704E-06

2.094

Edge

® 

Toroids

26µ

0.01

3.646E-11

3.192

60µ

0.01

9.202E-10

3.044

MPP 

Toroids

14µ

0.01

4.357E-09

2.385

26µ

0.01

1.090E-08

2.505

60µ

0.01

1.165E-07

2.436

125µ

0.01

4.061E-07

2.518

147µ

0.01

9.118E-07

2.430

160µ

0.01

9.525E-07

2.477

173µ

0.01

8.078E-07

2.563

200µ

0.01

1.496E-06

2.477

300µ

0.01

4.913E-06

2.430

550µ

0.01

5.597E-04

1.710

Permeability versus DC Bias Curves

Fit Formula

Note: Fit valid only for range shown on graph.

% initial permeability =          

where H is Oersteds (Oe)

1

(a + bH

c

)

Perm

a

b

c

Kool Mµ

®

  

E Cores, U Cores 

& Blocks

14µ

0.01

3.066E-07

1.850

26µ

0.01

4.581E-07

1.868

40µ

0.01

7.684E-07

1.904

60µ

0.01

3.371E-06

1.736

90µ

0.01

1.529E-05

1.583

X

F

lux

®  

E Cores, U Cores 

& Blocks

26µ

0.01

3.031E-09

2.505

40µ

0.01

4.028E-08

2.250

60µ

0.01

7.781E-08

2.253

Kool Mµ

®

 

EQ Cores

26µ

0.01

4.581E-07

1.868

40µ

0.01

7.684E-07

1.904

60µ

0.01

3.371E-06

1.736

X

F

lux

®

 

EQ Cores

26µ

0.01

3.031E-09

2.505

40µ

0.01

4.028E-08

2.250

60µ

0.01

7.781E-08

2.253

High Flux 

EQ Cores

26µ

0.01

2.313E-11

3.243

40µ

0.01

8.995E-09

2.441

60µ

0.01

1.583E-08

2.572

Cor
e Selection

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Material Data

MAGNETICS

42

Core Loss Density Curves

Flux Density (Tesla)

0.01

0.02

0.03

0.05

0.07

0.1

0.2

0.3

0.5

100

70
50

30
20

10

1,000

2,000

700
500

300
200

Core Loss (mW/cm

3

)

100 kHz

300 kHz

200 kHz

50 kHz 40 kHz

20 kHz

25 kHz

10 kHz

5 kHz

Kool Mµ

®

 Toroids 14µ

Flux Density (Tesla)

0.01

0.02

0.03

0.05

0.07

0.1

0.2

0.3

0.5

100

70
50

30
20

10

1,000

2,000

700
500

300
200

Core Loss (mW/cm

3

)

100 kHz

300 kHz

200 kHz

50 kHz 40 kHz

20 kHz

25 kHz

10 kHz

5 kHz

Kool Mµ

® 

Toroids 26µ, 40µ

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Core Loss Density Curves

www.mag-inc.com

43

Core Loss Density Curves

Flux Density (Tesla)

0.01

0.02

0.03

0.05

0.07

0.1

0.2

0.3

0.5

100

70
50

30
20

10

1,000

2,000

700
500

300
200

Core Loss (mW/cm

3

)

100 kHz

300 kHz

200 kHz

50 kHz 40 kHz

20 kHz

25 kHz

10 kHz

5 kHz

Kool Mµ

®

 Toroids 60µ, 75µ, 90µ, 125µ

Kool Mµ

® 

MAX Toroids 14µ

Flux Density (Tesla)

0.01

0.02

0.03

0.05

0.07

0.1

0.2

0.3

0.5

100

70
50

30
20

10

1,000

2,000

700
500

300
200

Core Loss (mW/cm

3

)

100 kHz

300 kHz

200 kHz

50 kHz 40 kHz

20 kHz

25 kHz

10 kHz

5 kHz

Material Data

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Core Loss Density Curves

Material Data

MAGNETICS

44

Core Loss Density Curves

Flux Density (Tesla)

0.01

0.02

0.03

0.05

0.07

0.1

0.2

0.3

0.5

100

70
50

30
20

10

1,000

2,000

700
500

300
200

Core Loss (mW/cm

3

)

100 kHz

300 kHz

200 kHz

50 kHz 40 kHz

20 kHz

25 kHz

10 kHz

5 kHz

Flux Density (Tesla)

0.01

0.02

0.03

0.05

0.07

0.1

0.2

0.3

0.5

100

70
50

30
20

10

1,000

2,000

700
500

300
200

Core Loss (mW/cm

3

)

100 kHz

300 kHz

200 kHz

50 kHz 40 kHz

20 kHz

25 kHz

10 kHz

5 kHz

Kool Mµ

® 

MAX Toroids 19µ

Kool Mµ

® 

MAX Toroids 26µ, 40µ, 60µ

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Core Loss Density Curves

www.mag-inc.com

45

Core Loss Density Curves

Flux Density (Tesla)

0.01

0.02

0.03

0.05

0.07

0.1

0.2

0.3

0.5

100

70
50

30
20

10

1,000

2,000

700
500

300
200

Core Loss (mW/cm

3

)

100 kHz

300 kHz

500 kHz

1 MHz

2 MHz

200 kHz

50 kHz 40 kHz

20 kHz

25 kHz

10 kHz

5 kHz

Kool Mµ

®

 Hƒ Toroids 26µ

Kool Mµ

®

 Hƒ Toroids 60µ

Flux Density (Tesla)

0.01

0.02

0.03

0.05

0.07

0.1

0.2

0.3

0.5

100

70
50

30
20

10

1,000

2,000

700
500

300
200

Core Loss (mW/cm

3

)

100 kHz

300 kHz

500 kHz

1 MHz

2 MHz

200 kHz

50 kHz 40 kHz

20 kHz

25 kHz

10 kHz

5 kHz

Material Data

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Core Loss Density Curves

Material Data

MAGNETICS

46

Flux Density (Tesla)

0.01

0.02

0.03

0.05

0.07

0.1

0.2

0.3

0.5

100

70
50

30
20

10

1,000

2,000

700
500

300
200

Core Loss (mW/cm

3

)

100 kHz

300 kHz

200 kHz

50 kHz 40 kHz

20 kHz

25 kHz

10 kHz

5 kHz

Flux Density (Tesla)

0.01

0.02

0.03

0.05

0.07

0.1

0.2

0.3

0.5

100

70
50

30
20

10

1,000

2,000

700
500

300
200

Core Loss (mW/cm

3

)

100 kHz

300 kHz

200 kHz

50 kHz 40 kHz

20 kHz

25 kHz

10 kHz

5 kHz

XF

lux

®

 Toroids 19µ

XF

lux

®

 Toroids 26µ, 40µ

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Core Loss Density Curves

www.mag-inc.com

47

Core Loss Density Curves

Flux Density (Tesla)

0.01

0.02

0.03

0.05

0.07

0.1

0.2

0.3

0.5

100

70
50

30
20

10

1,000

2,000

700
500

300
200

Core Loss (mW/cm

3

)

100 kHz

300 kHz

200 kHz

50 kHz 40 kHz

20 kHz

25 kHz

10 kHz

5 kHz

High Flux Toroids 14µ

XF

lux

®

 Toroids 60µ, 75µ, 90µ, 125µ

Flux Density (Tesla)

0.01

0.02

0.03

0.05

0.07

0.1

0.2

0.3

0.5

100

70
50

30
20

10

1,000

2,000

700
500

300
200

Core Loss (mW/cm

3

)

100 kHz

300 kHz

200 kHz

50 kHz 40 kHz

20 kHz

25 kHz

10 kHz

5 kHz

Material Data

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Core Loss Density Curves

Material Data

MAGNETICS

48

Flux Density (Tesla)

0.01

0.02

0.03

0.05

0.07

0.1

0.2

0.3

0.5

100

70
50

30
20

10

1,000

2,000

700
500

300
200

Core Loss (mW/cm

3

)

100 kHz

300 kHz

200 kHz

50 kHz 40 kHz

20 kHz

25 kHz

10 kHz

5 kHz

High Flux Toroids 60µ

High Flux Toroids 26µ, 40µ

Flux Density (Tesla)

0.01

0.02

0.03

0.05

0.07

0.1

0.2

0.3

0.5

100

70
50

30
20

10

1,000

2,000

700
500

300
200

Core Loss (mW/cm

3

)

100 kHz

300 kHz

200 kHz

50 kHz 40 kHz

20 kHz

25 kHz

10 kHz

5 kHz

Magnetics-Powder-Core-Catalog-2020-html.html
background image

www.mag-inc.com

49

High Flux Toroids 125µ

Flux Density (Tesla)

0.01

0.02

0.03

0.05

0.07

0.1

0.2

0.3

0.5

100

70
50

30
20

10

1,000

2,000

700
500

300
200

Core Loss (mW/cm

3

)

100 kHz

300 kHz

200 kHz

50 kHz 40 kHz

20 kHz

25 kHz

10 kHz

5 kHz

Flux Density (Tesla)

0.01

0.02

0.03

0.05

0.07

0.1

0.2

0.3

0.5

100

70
50

30
20

10

1,000

2,000

700
500

300
200

Core Loss (mW/cm

3

)

100 kHz

300 kHz

200 kHz

50 kHz 40 kHz

20 kHz

25 kHz

10 kHz

5 kHz

High Flux Toroids 147µ

Core Loss Density Curves

Material Data

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Core Loss Density Curves

Material Data

MAGNETICS

50

Flux Density (Tesla)

0.01

0.02

0.03

0.05

0.07

0.1

0.2

0.3

0.5

100

70
50

30
20

10

1,000

2,000

700
500

300
200

Core Loss (mW/cm

3

)

100 kHz

300 kHz

200 kHz

50 kHz 40 kHz

20 kHz

25 kHz

10 kHz

5 kHz

High Flux Toroids 160µ

Edge

®

 Toroids 26µ

Flux Density (Tesla)

0.01

0.02

0.03

0.05

0.07

0.1

0.2

0.3

0.5

100

70
50

30
20

10

1,000

2,000

700
500

300
200

Core Loss (mW/cm

3

)

100 kHz

300 kHz

200 kHz

50 kHz 40 kHz

20 kHz

25 kHz

10 kHz

5 kHz

Magnetics-Powder-Core-Catalog-2020-html.html
background image

www.mag-inc.com

51

Edge

® 

Toroids 60µ

Flux Density (Tesla)

0.01

0.02

0.03

0.05

0.07

0.1

0.2

0.3

0.5

100

70
50

30
20

10

1,000

2,000

700
500

300
200

Core Loss (mW/cm

3

)

100 kHz

300 kHz

200 kHz

50 kHz 40 kHz

20 kHz

25 kHz

10 kHz

5 kHz

Flux Density (Tesla)

0.01

0.02

0.03

0.05

0.07

0.1

0.2

0.3

0.5

100

70
50

30
20

10

1,000

2,000

700
500

300
200

Core Loss (mW/cm

3

)

100 kHz

300 kHz

200 kHz

50 kHz 40 kHz

20 kHz

25 kHz

10 kHz

5 kHz

MPP Toroids 14µ

Core Loss Density Curves

Material Data

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Core Loss Density Curves

Material Data

MAGNETICS

52

Flux Density (Tesla)

0.01

0.02

0.03

0.05

0.07

0.1

0.2

0.3

0.5

100

70
50

30
20

10

1,000

2,000

700
500

300
200

Core Loss (mW/cm

3

)

100 kHz

300 kHz

200 kHz

50 kHz 40 kHz

20 kHz

25 kHz

10 kHz

5 kHz

MPP Toroids 26µ

MPP Toroids 60µ

Flux Density (Tesla)

0.01

0.02

0.03

0.05

0.07

0.1

0.2

0.3

0.5

100

70
50

30
20

10

1,000

2,000

700
500

300
200

Core Loss (mW/cm

3

)

100 kHz

300 kHz

200 kHz

50 kHz 40 kHz

20 kHz

25 kHz

10 kHz

5 kHz

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Core Loss Density Curves

www.mag-inc.com

53

Material Data

MPP Toroids 125µ

Flux Density (Tesla)

0.01

0.02

0.03

0.05

0.07

0.1

0.2

0.3

0.5

100

70
50

30
20

10

1,000

2,000

700
500

300
200

Core Loss (mW/cm

3

)

100 kHz

300 kHz

200 kHz

50 kHz 40 kHz

20 kHz

25 kHz

10 kHz

5 kHz

Flux Density (Tesla)

0.01

0.02

0.03

0.05

0.07

0.1

0.2

0.3

0.5

100

70
50

30
20

10

1,000

2,000

700
500

300
200

Core Loss (mW/cm

3

)

100 kHz

300 kHz

200 kHz

50 kHz 40 kHz

20 kHz

25 kHz

10 kHz

5 kHz

MPP Toroids 147µ, 160µ, 173µ

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Core Loss Density Curves

Material Data

MAGNETICS

54

Flux Density (Tesla)

0.01

0.02

0.03

0.05

0.07

0.1

0.2

0.3

0.5

100

70
50

30
20

10

1,000

2,000

700
500

300
200

Core Loss (mW/cm

3

)

100 kHz

300 kHz

200 kHz

50 kHz 40 kHz

20 kHz

25 kHz

10 kHz

5 kHz

MPP Toroids 200µ, 300µ

Flux Density (Tesla)

0.01

0.02

0.03

0.05

0.07

0.1

0.2

0.3

0.5

100

70
50

30
20

10

1,000

2,000

700
500

300
200

Core Loss (mW/cm

3

)

100 kHz

300 kHz

200 kHz

50 kHz 40 kHz

20 kHz

25 kHz

10 kHz

5 kHz

MPP Toroids 550µ

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Core Loss Density Curves

www.mag-inc.com

55

Material Data

Flux Density (Tesla)

0.01

0.02

0.03

0.05

0.07

0.1

0.2

0.3

0.5

100

70
50

30
20

10

1,000

2,000

700
500

300
200

Core Loss (mW/cm

3

)

100 kHz

300 kHz

200 kHz

50 kHz 40 kHz

20 kHz

25 kHz

10 kHz

5 kHz

Flux Density (Tesla)

0.01

0.02

0.03

0.05

0.07

0.1

0.2

0.3

0.5

100

70
50

30
20

10

1,000

2,000

700
500

300
200

Core Loss (mW/cm

3

)

100 kHz

300 kHz

200 kHz

50 kHz 40 kHz

20 kHz

25 kHz

10 kHz

5 kHz

Kool Mµ

®

 E Cores, U Cores & Blocks 14µ

Kool Mµ

®

 E Cores, U Cores & Blocks 26µ

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Core Loss Density Curves

Material Data

MAGNETICS

56

Core Loss Density Curves

Flux Density (Tesla)

0.01

0.02

0.03

0.05

0.07

0.1

0.2

0.3

0.5

100

70
50

30
20

10

1,000

2,000

700
500

300
200

Core Loss (mW/cm

3

)

100 kHz

300 kHz

200 kHz

50 kHz 40 kHz

20 kHz

25 kHz

10 kHz

5 kHz

Flux Density (Tesla)

0.01

0.02

0.03

0.05

0.07

0.1

0.2

0.3

0.5

100

70
50

30
20

10

1,000

2,000

700
500

300
200

Core Loss (mW/cm

3

)

100 kHz

300 kHz

200 kHz

50 kHz 40 kHz

20 kHz

25 kHz

10 kHz

5 kHz

Kool Mµ

®

 E Cores, U Cores & Blocks 40µ

Kool Mµ

®

 E Cores, U Cores & Blocks 60µ

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Core Loss Density Curves

www.mag-inc.com

57

Material Data

Kool Mµ

®

 E Cores, U Cores & Blocks 90µ

XF

lux

®

 E Cores, U Cores & Blocks 26µ

Flux Density (Tesla)

0.01

0.02

0.03

0.05

0.07

0.1

0.2

0.3

0.5

100

70
50

30
20

10

1,000

2,000

700
500

300
200

Core Loss (mW/cm

3

)

100 kHz

300 kHz

200 kHz

50 kHz 40 kHz

20 kHz

25 kHz

10 kHz

5 kHz

Flux Density (Tesla)

0.01

0.02

0.03

0.05

0.07

0.1

0.2

0.3

0.5

100

70
50

30
20

10

1,000

2,000

700
500

300
200

Core Loss (mW/cm

3

)

100 kHz

300 kHz

200 kHz

50 kHz 40 kHz

20 kHz

25 kHz

10 kHz

5 kHz

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Core Loss Density Curves

Material Data

MAGNETICS

58

XF

lux

®

 E Cores, U Cores & Blocks 40µ

XF

lux

®

 E Cores, U Cores & Blocks 60µ

Flux Density (Tesla)

0.01

0.02

0.03

0.05

0.07

0.1

0.2

0.3

0.5

100

70
50

30
20

10

1,000

2,000

700
500

300
200

Core Loss (mW/cm

3

)

100 kHz

300 kHz

200 kHz

50 kHz 40 kHz

20 kHz

25 kHz

10 kHz

5 kHz

Flux Density (Tesla)

0.01

0.02

0.03

0.05

0.07

0.1

0.2

0.3

0.5

100

70
50

30
20

10

1,000

2,000

700
500

300
200

Core Loss (mW/cm

3

)

100 kHz

300 kHz

200 kHz

50 kHz 40 kHz

20 kHz

25 kHz

10 kHz

5 kHz

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Core Loss Density Curves

www.mag-inc.com

59

Material Data

Kool Mµ

®

 EQ Cores 26µ

Kool Mµ

®

 EQ Cores 40µ

Flux Density (Tesla)

0.01

0.02

0.03

0.05

0.07

0.1

0.2

0.3

0.5

100

70
50

30
20

10

1,000

2,000

700
500

300
200

Core Loss (mW/cm

3

)

100 kHz

300 kHz

200 kHz

50 kHz 40 kHz

20 kHz

25 kHz

10 kHz

5 kHz

Flux Density (Tesla)

0.01

0.02

0.03

0.05

0.07

0.1

0.2

0.3

0.5

100

70
50

30
20

10

1,000

2,000

700
500

300
200

Core Loss (mW/cm

3

)

100 kHz

300 kHz

200 kHz

50 kHz 40 kHz

20 kHz

25 kHz

10 kHz

5 kHz

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Core Loss Density Curves

Material Data

MAGNETICS

60

Kool Mµ

®

 EQ Cores 60µ

XF

lux

®

 EQ Cores 26µ

Flux Density (Tesla)

0.01

0.02

0.03

0.05

0.07

0.1

0.2

0.3

0.5

100

70
50

30
20

10

1,000

2,000

700
500

300
200

Core Loss (mW/cm

3

)

100 kHz

300 kHz

200 kHz

50 kHz 40 kHz

20 kHz

25 kHz

10 kHz

5 kHz

Flux Density (Tesla)

0.01

0.02

0.03

0.05

0.07

0.1

0.2

0.3

0.5

100

70
50

30
20

10

1,000

2,000

700
500

300
200

Core Loss (mW/cm

3

)

100 kHz

300 kHz

200 kHz

50 kHz 40 kHz

20 kHz

25 kHz

10 kHz

5 kHz

Magnetics-Powder-Core-Catalog-2020-html.html
background image

www.mag-inc.com

61

XF

lux

®

 EQ Cores 40µ

XF

lux

®

 EQ Cores 60µ

Flux Density (Tesla)

0.01

0.02

0.03

0.05

0.07

0.1

0.2

0.3

0.5

100

70
50

30
20

10

1,000

2,000

700
500

300
200

Core Loss (mW/cm

3

)

100 kHz

300 kHz

200 kHz

50 kHz 40 kHz

20 kHz

25 kHz

10 kHz

5 kHz

Flux Density (Tesla)

0.01

0.02

0.03

0.05

0.07

0.1

0.2

0.3

0.5

100

70
50

30
20

10

1,000

2,000

700
500

300
200

Core Loss (mW/cm

3

)

100 kHz

300 kHz

200 kHz

50 kHz 40 kHz

20 kHz

25 kHz

10 kHz

5 kHz

Material Data

Core Loss Density Curves

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Core Loss Density Curves

Material Data

MAGNETICS

62

Core Loss Density Curves

High Flux EQ Cores 26µ

High Flux EQ Cores 40µ

Flux Density (Tesla)

0.01

0.02

0.03

0.05

0.07

0.1

0.2

0.3

0.5

100

70
50

30
20

10

1,000

2,000

700
500

300
200

Core Loss (mW/cm

3

)

100 kHz

300 kHz

200 kHz

50 kHz 40 kHz

20 kHz

25 kHz

10 kHz

5 kHz

Flux Density (Tesla)

0.01

0.02

0.03

0.05

0.07

0.1

0.2

0.3

0.5

100

70
50

30
20

10

1,000

2,000

700
500

300
200

Core Loss (mW/cm

3

)

100 kHz

300 kHz

200 kHz

50 kHz 40 kHz

20 kHz

25 kHz

10 kHz

5 kHz

Material Data

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Core Loss Density Curves

www.mag-inc.com

63

Material Data

High Flux EQ Cores 60µ

Flux Density (Tesla)

0.01

0.02

0.03

0.05

0.07

0.1

0.2

0.3

0.5

100

70
50

30
20

10

1,000

2,000

700
500

300
200

Core Loss (mW/cm

3

)

100 kHz

300 kHz

200 kHz

50 kHz 40 kHz

20 kHz

25 kHz

10 kHz

5 kHz

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Core Loss Density Curves

Material Data

MAGNETICS

64

Fit Formula

P = aB

b

f

c

 where B = Tesla (T), f = kilohertz (kHz)

Perm

a

b

c

Kool Mµ

® 

Toroids

14µ

80.55

1.988

1.541

26µ, 40µ

52.36

1.988

1.541

60µ, 75µ, 90µ, 125µ

44.30

1.988

1.541

Kool Mµ

® 

MAX 

Toroids

14µ

144.49

2.072

1.379

19µ

128.84

2.072

1.379

26µ, 40µ, 60µ

113.53

2.072

1.379

Kool Mµ

® 

Hƒ Toroids

26µ

32.22

1.988

1.541

60µ

26.18

1.988

1.541

X

F

lux

® 

Toroids

19µ

509.27

2.015

1.194

26µ, 40µ

581.54

2.015

1.194

60µ, 75µ, 90µ, 125µ

542.77

2.015

1.194

High Flux 

Toroids

14µ

968.56

2.218

1.189

26µ, 40µ

492.31

2.218

1.240

60µ

246.54

2.218

1.311

125µ

181.08

2.218

1.378

147µ

405.59

2.218

1.393

160µ

390.92

2.218

1.401

Edge

® 

Toroids

26µ

278.59

2.218

1.236

60µ

181.15

2.218

1.267

MPP 

Toroids

14µ

266.22

2.103

1.316

26µ

146.94

2.103

1.357

60µ

72.15

2.103

1.449

125µ

62.22

2.103

1.561

147µ, 160µ, 173µ

56.51

2.103

1.598

200µ, 300µ

53.71

2.103

1.624

550µ

74.76

2.103

1.645

Kool Mµ

®

  

E Cores, U Cores 

& Blocks

14µ

29.3

1.988

1.541

26µ

32.22

1.988

1.541

40µ

34.23

1.988

1.541

60µ

42.29

1.988

1.541

90µ

46.32

1.988

1.541

X

F

lux

® 

E Cores,  

U Cores & Blocks

26µ

242.31

2.015

1.194

40µ

387.69

2.015

1.194

60µ

436.16

2.015

1.194

Kool Mµ

®

 

EQ Cores

26µ

90.40

2.044

1.451

40µ

139.20

2.018

1.287

60µ

137.60

2.032

1.296

X

F

lux

® 

 

EQ Cores

26µ

165.70

2.182

1.509

40µ

425.80

2.209

1.250

60µ

644.20

2.192

1.152

High Flux 

EQ Cores

26µ

169.80

2.165

1.357

40µ

119.00

2.183

1.443

60µ

47.80

2.201

1.640

Magnetics-Powder-Core-Catalog-2020-html.html
background image

www.mag-inc.com

65

DC Magnetization Curves

Magnetizing Force (Oe)

1

2

3

5

7

0.0

0.1

0.2

0.3

0.4

0.5

0.6

10

20

30

50

70

100

200

300

500 700

Flux Density (T

esla)

160

147

125

90

75

60

40

26

14

173

200

250

300

550

500

550µ

40µ

26µ

14µ

160µ

60µ

75µ

90µ

125µ

Kool Mµ

® 

Toroids

Magnetizing Force (Oe)

1

2

3

5

7

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

10

20

30

50

70

200

300

500

100

1000

Flux Density (T

esla)

160

147

125

90

75

60

40

26

19

14

173

200

250

300

550

500

100

50

25

60µ

40µ

26µ

19µ

14µ

Kool Mµ

® 

MAX Toroids

Material Data

Magnetics-Powder-Core-Catalog-2020-html.html
background image

MAGNETICS

66

DC Magnetization Curves

Material Data

Magnetizing Force (Oe)

1

2

3

5

7

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

10

20

30

50

70

100

200

300

500

1000

Flux Density (T

esla)

160

147

125

90

75

60

40

26

19

14

173

200

250

300

550

500

100

50

25

550µ

40µ

60µ

26µ

90µ

75µ

Kool Mµ

® 

Hƒ Toroids

Magnetizing Force (Oe)

1

2

3

5

7

20

30

50

70

200

300

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

10

100

500

Flux Density (T

esla)

160

147

125

90

75

60

40

26

19

14

173

200

250

300

550

500

100

50

25

40µ

60µ

26µ

19µ

90µ

125µ

75µ

XF

lux

® 

Toroids

Magnetics-Powder-Core-Catalog-2020-html.html
background image

www.mag-inc.com

67

Material Data

DC Magnetization Curves

Magnetizing Force (Oe)

1

2

3

5

7

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

10

20

30

50

70

100

200

300

500

1000

Flux Density (T

esla)

160

147

125

90

75

60

40

26

19

14

173

200

250

300

550

500

100

50

25

550µ

40µ

60µ

26µ

14µ

160µ

147µ

125µ

Magnetizing Force (Oe)

1

2

3

5

7

20

30

50

70

200

300

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

10

100

500

Flux Density (T

esla)

160

147

125

90

75

60

40

26

19

14

173

200

250

300

550

500

100

50

25

60µ

26µ

High Flux Toroids  

Edge

® 

Toroids

Magnetics-Powder-Core-Catalog-2020-html.html
background image

MAGNETICS

68

DC Magnetization Curves

Material Data

Magnetizing Force (Oe)

1

2

3

5

7

20

30

50

70

0.0

0.1

0.2

0.3

0.4

0.5

0.6

10

100

200

300

600

Flux Density (T

esla)

160

147

125

90

75

60

40

26

19

14

173

200

250

300

550

500

100

50

25

60µ

26µ

14µ

125µ

147µ

160µ

173µ

200µ

300µ

Magnetizing Force (Oe)

1

2

3

5

7

0.0

.10

.05

.20

.15

.30

.25

2

3

4

5

6

7

8

10

Flux Density (T

esla)

160

147

125

90

75

60

40

26

19

14

173

200

250

300

550

500

100

50

25

550µ

MPP Toroids 550µ

MPP Toroids 14µ-300µ

Magnetics-Powder-Core-Catalog-2020-html.html
background image

www.mag-inc.com

69

Material Data

DC Magnetization Curves

Magnetizing Force (Oe)

1

2

3

5

7

0.0

0.1

0.2

0.3

0.4

0.5

0.6

10

20

70

50

30

100

Flux Density (T

esla)

160

147

125

90

75

60

40

26

19

14

173

200

250

300

550

500

100

50

25

40µ

60µ

26µ

14µ

90µ

Magnetizing Force (Oe)

1

2

3

5

7

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

10

20

70

50

30

100

200

Flux Density (T

esla)

160

147

125

90

75

60

40

26

19

14

173

200

250

300

550

500

100

50

25

40µ

60µ

26µ

Kool Mµ

®

 E Cores, U Cores & Blocks

XF

lux

®

 E Cores, U Cores & Blocks

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Material Data

MAGNETICS

70

DC Magnetization Curves

Material Data

Magnetizing Force (Oe)

1

2

3

5

7

0.0

0.1

0.2

0.3

0.4

0.5

0.6

10

20

70

50

30

100

Flux Density (T

esla)

160

147

125

90

75

60

40

26

19

14

173

200

250

300

550

500

100

50

25

40µ

60µ

26µ

XF

lux

® 

EQ Cores

Kool Mµ

®

 EQ Cores

Magnetizing Force (Oe)

1

2

3

5

7

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

10

20

70

50

30

100

200

Flux Density (T

esla)

160

147

125

90

75

60

40

26

19

14

173

200

250

300

550

500

100

50

25

40µ

60µ

26µ

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71

Material Data

Magnetizing Force (Oe)

1

2

3

5

7

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

10

20

70

50

30

100

200

Flux Density (T

esla)

160

147

125

90

75

60

40

26

19

14

173

200

250

300

550

500

100

50

25

40µ

60µ

26µ

Material Data

DC Magnetization Curves

High Flux EQ Cores

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Material Data

MAGNETICS

72

DC Magnetization Curves

Perm

a

b

c

d

e

x

Kool Mµ

® 

Toroids

14µ

3.918E-02

1.856E-02

4.812E-04

1.390E-01

4.478E-04

1.875

26µ

3.763E-02

1.712E-02

5.155E-04

9.190E-02

4.909E-04

1.812

40µ

3.789E-02

1.632E-02

5.355E-04

7.365E-02

5.110E-04

1.665

60µ

3.601E-02

1.721E-02

5.401E-04

5.624E-02

5.156E-04

1.577

75µ

3.111E-02

2.286E-02

5.343E-04

5.568E-02

4.982E-04

1.614

90µ

2.965E-02

2.538E-02

5.142E-04

5.305E-02

4.867E-04

1.578

125µ

2.730E-02

2.946E-02

5.038E-04

5.274E-02

4.639E-04

1.471

Kool Mµ

®

 MAX 

Toroids

14µ

3.945E-02

1.922E-02

4.882E-04

1.430E-01

4.217E-04

1.895

19µ

3.915E-02

1.866E-02

5.237E-04

1.225E-01

4.368E-04

1.859

26µ

6.405E-02

1.572E-02

5.541E-04

9.685E-02

4.568E-04

1.813

40µ

3.810E-02

1.720E-02

5.982E-04

8.225E-02

4.852E-04

1.684

60µ

3.589E-02

1.862E-02

6.201E-04

6.341E-02

4.897E-04

1.630

Kool Mµ

®

 Hƒ 

Toroids

26µ

5.241E-02

1.534E-02

5.564E-04

9.843E-02

4.635E-04

1.770

60µ

3.621E-02

1.674E-02

5.950E-04

5.718E-02

5.134E-04

1.599

X

F

lux

® 

Toroids

19µ

3.986E-02

2.164E-02

5.311E-04

1.504E-01

3.344E-04

1.783

26µ

4.042E-02

2.042E-02

5.962E-04

1.164E-01

3.934E-04

1.872

40µ

5.119E-02

1.602E-02

6.640E-04

9.034E-02

4.405E-04

1.679

60µ

3.880E-02

1.648E-02

6.982E-04

6.611E-02

4.705E-04

1.623

75µ

4.142E-02

1.414E-02

7.119E-04

5.584E-02

4.648E-04

1.461

90µ

3.621E-02

1.987E-02

6.675E-04

4.921E-02

4.657E-04

1.542

125µ

3.814E-02

1.729E-02

6.277E-04

3.363E-02

4.649E-04

1.307

High Flux 

Toroids

14µ

3.981E-02

2.174E-02

4.745E-04

1.733E-01

3.407E-04

1.749

26µ

3.969E-02

1.964E-02

5.931E-04

1.163E-01

4.025E-04

1.828

40µ

3.900E-02

1.717E-02

6.527E-04

8.595E-02

4.671E-04

1.725

60µ

3.828E-02

1.800E-02

7.012E-04

7.063E-02

4.502E-04

1.630

125µ

3.790E-02

2.126E-02

7.080E-04

4.139E-02

4.223E-04

1.433

147µ

3.498E-02

2.404E-02

6.777E-04

3.915E-02

4.373E-04

1.366

160µ

3.413E-02

2.449E-02

6.798E-04

3.699E-02

4.411E-04

1.326

Edge

® 

Toroids

26µ

4.247E-02

2.153E-02

6.192E-04

1.157E-01

4.154E-04

1.951

60µ

4.753E-02

1.352E-02

7.586E-04

7.251E-02

4.368E-04

1.538

MPP 

Toroids

14µ

3.918E-02

1.824E-02

4.911E-04

1.331E-01

4.502E-04

1.938

26µ

5.340E-02

1.144E-02

5.419E-04

8.772E-02

5.000E-04

1.699

60µ

3.933E-02

1.371E-02

5.727E-04

5.100E-02

5.216E-04

1.528

125µ

3.423E-02

2.092E-02

5.477E-04

3.371E-02

4.941E-04

1.364

147µ

2.888E-02

2.651E-02

5.290E-04

3.462E-02

5.025E-04

1.396

160µ

2.843E-02

2.738E-02

5.121E-04

3.243E-02

5.052E-04

1.365

173µ

2.933E-02

2.707E-02

4.917E-04

2.795E-02

5.130E-04

1.325

200µ

2.257E-02

3.252E-02

5.097E-04

3.170E-02

5.225E-04

1.316

300µ

2.880E-03

5.179E-02

5.787E-04

4.904E-02

5.100E-04

1.254

550µ

1.681E-03

7.555E-02

1.118E-10

9.743E-02

1.754E-03

1.100

Fit Formula

41- old 3 - 35

B = 1+dH+eH

2

a + bH+ cH

2

#

&

x

Units:B in Tesla; Hin A

$

Turns/cm

where B = Tesla (T), H = Oersteds (Oe)

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73

Material Data

DC Magnetization Curves

Perm

a

b

c

d

e

x

Kool Mµ

®

  

E Cores, U Cores 

& Blocks

14µ

5.216E-02

1.507E-02

4.323E-04

1.036E-01

5.174E-04

1.952

26µ

2.710E-02

9.151E-03

4.036E-04

7.636E-02

3.986E-04

1.515

40µ

4.990E-02

1.537E-02

5.792E-04

7.263E-02

5.542E-04

1.689

60µ

4.286E-02

1.787E-02

6.044E-04

6.335E-02

5.529E-04

1.586

90µ

3.157E-02

2.186E-02

6.059E-04

5.720E-02

5.696E-04

1.476

X

F

lux

®  

E Cores, U Cores 

& Blocks

26µ

1.126E-01

2.161E-02

4.759E-04

8.359E-02

3.582E-04

2.224

40µ

1.318E-01

2.607E-02

7.203E-04

8.601E-02

5.547E-04

2.245

60µ

9.021E-02

1.098E-02

5.520E-05

1.094E-02

3.781E-05

1.642

Kool Mµ

®

 

EQ Cores

26µ

2.710E-02

9.151E-03

4.036E-04

7.636E-02

3.986E-04

1.515

40µ

4.990E-02

1.537E-02

5.792E-04

7.263E-02

5.542E-04

1.689

60µ

4.286E-02

1.787E-02

6.044E-04

6.335E-02

5.529E-04

1.586

X

F

lux

® 

 

EQ Cores

26µ

1.126E-01

2.161E-02

4.759E-04

8.359E-02

3.582E-04

2.224

40µ

1.318E-01

2.607E-02

7.203E-04

8.601E-02

5.547E-04

2.245

60µ

9.021E-02

1.098E-02

5.520E-05

1.094E-02

3.781E-05

1.642

High Flux 

EQ Cores

26µ

2.013E-01

5.554E-02

9.457E-04

1.485E-01

7.389E-04

3.207

40µ

6.923E-02

1.711E-02

7.256E-04

9.873E-02

4.585E-04

1.722

60µ

4.712E-02

1.715E-02

7.430E-04

7.138E-02

4.824E-04

1.631

Fit Formula

41- old 3 - 35

B = 1+dH+eH

2

a + bH+ cH

2

#

&

x

Units:B in Tesla; Hin A

$

Turns/cm

where B = Tesla (T), H = Oersteds (Oe)

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Material Data

MAGNETICS

74

Permeability versus Temperature Curves

Kool Mµ

®

Temperature (˚C)

-60

0

-20

-40

80

60

40

20

100

120

140

200

180

160

+/- % Initial Permeability (

µ

i

)

1%
0%

-1%
-2%
-3%
-4%
-5%
-6%
-7%
-8%
-9%

-10%
-11%
-12%
-13%
-14%
-15%

14µ

26µ

40µ
60µ
75µ

90µ

125µ

Kool Mµ

®

 MAX

Temperature (˚C)

-60

0

-20

-40

80

60

40

20

100

120

140

200

180

160

+/- % Initial Permeability (

µ

i

)

0.5%

0.0%

-0.5%

-1.0%

-1.5%

-2.0%

-2.5%

-3.0%

-3.5%

-4.0%

14µ
19µ

26µ

40µ

60µ

Magnetics-Powder-Core-Catalog-2020-html.html
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75

Material Data

Permeability versus Temperature Curves

Kool Mµ

® 

Temperature (˚C)

-60

0

-20

-40

80

60

40

20

100

120

140

200

180

160

+/- % Initial Permeability (

µ

i

)

60µ

26µ

0.5%

0.0%

-0.5%

-1.0%

-1.5%

-2.0%

-2.5%

-3.0%

-3.5%

-4.0%

-4.5%

-5.0%

XF

lux

®

Temperature (˚C)

-60

0

-20

-40

80

60

40

20

100

120

140

200

180

160

+/- % Initial Permeability (

µ

i

)

5%
4%
3%
2%
1%
0%

-1%
-2%
-3%
-4%
-5%
-6%
-7%
-8%
-9%

-10%

19µ

60µ

75µ

125µ

90µ

26µ

40µ

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Material Data

MAGNETICS

76

Permeability versus Temperature Curves

High Flux 

Edge

®

Temperature (˚C)

-60

0

-20

-40

80

60

40

20

100

120

140

200

180

160

+/- % Initial Permeability (

µ

i

)

2.0%

1.5%

1.0%

0.5%

0.0%

-0.5%

-1.0%

-1.5%

-2.0%

60µ

26µ

Temperature (˚C)

-40

-60

-20

0

20

40

60

80

100

120

140

160

180

200

-4%

-2%

0%

2%

4%

6%

8%

+/- % Initial Permeability (

µ

i

)

14µ

26µ - 40µ

60µ

125µ

147µ

160µ

125 perm

90

75

60

40

26

160

147

14
173

200

250

300

550

500

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77

Material Data

Permeability versus Temperature Curves

Temperature (˚C)

-60

-40

-20

0

20

40

60

80

100

120

140

160

180

200

-1%

0%

1%

2%

3%

+/- % Initial Permeability (

µ

i

)

300µ

200µ -

147µ - 173µ

125µ

60µ

26µ

14µ

14µ

125 perm

90

75

60

40

26

160

147

14
173

200

250

300

550

500

MPP 14µ-300µ

Temperature (˚C)

-60

-40

-20

0

20

40

60

80

100

120

140

160

180

200

-4%

-2%

-0%

2%

4%

6%

8%

10%

12%

14%

16%

18%

+/- % Initial Permeability (

µ

i

)

550µ

125 perm

90

75

60

40

26

160

147

14
173

200

250

300

550

500

MPP 550µ

Magnetics-Powder-Core-Catalog-2020-html.html
background image

MAGNETICS

78

Permeability versus Temperature Curves

Fit Formula

44 - old 3 - 35

Change compared withµ

25˚C

= µ

25˚C

µ

T

- µ

25˚C

= a + bT + cT

2

Change compared withµ

25˚C

= µ

25˚C

µ

T

- µ

25˚C

= a + bT + cT

2

+ dT

3

+ eT

4

Perm

a

b

c

d

e

Kool Mµ

®

14µ

-1.892E-03

9.866E-05

-1.966E-06

5.728E-09

-8.706E-14

26µ

-2.857E-03

1.641E-04

-3.233E-06

1.147E-08

-8.391E-12

40µ

-3.982E-03

2.404E-04

-4.711E-06

1.816E-08

-1.808E-11

60µ

-5.590E-03

3.495E-04

-6.822E-06

2.772E-08

-3.192E-11

75µ

-6.796E-03

4.313E-04

-8.406E-06

3.490E-08

-4.230E-11

90µ

-8.002E-03

5.130E-04

-9.989E-06

4.207E-08

-5.268E-11

125µ

-1.082E-02

7.039E-04

-1.368E-05

5.880E-08

-7.690E-11

Kool Mµ

® 

MAX

14µ

-5.884E-04

4.384E-05

-8.804E-07

2.735E-09

-4.762E-13

19µ

-7.985E-04

5.950E-05

-1.195E-06

3.711E-09

-6.463E-13

26µ

-1.093E-03

8.142E-05

-1.635E-06

5.079E-09

-8.844E-13

40µ

-1.681E-03

1.253E-04

-2.515E-06

7.813E-09

-1.361E-12

60µ

-2.522E-03

1.879E-04

-3.773E-06

1.172E-08

-2.041E-12

Kool Mµ

®

 Hƒ

26µ

-2.268E-03

1.373E-04

-2.055E-06

1.755E-09

1.316E-11

60µ

-5.441E-03

3.217E-04

-5.135E-06

1.320E-08

2.276E-12

X

F

lux

®

19µ

-8.147E-04

4.387E-05

-5.911E-07

3.367E-09

-6.573E-12

26µ

-2.000E-03

8.887E-05

-6.792E-07

2.949E-09

-4.823E-12

40µ

-3.723E-03

1.578E-04

-9.501E-07

3.325E-09

-4.372E-12

60µ

-5.585E-03

2.367E-04

-1.425E-06

4.988E-09

-6.558E-12

75µ

-6.981E-03

2.959E-04

-1.781E-06

6.234E-09

-8.198E-12

90µ

-8.377E-03

3.551E-04

-2.138E-06

7.481E-09

-9.837E-12

125µ

-1.163E-02

4.931E-04

-2.969E-06

1.039E-08

-1.366E-11

Edge

®

26µ

-1.532E-03

6.054E-05

7.220E-08

-6.624E-10

1.250E-12

60µ

-2.134E-03

8.192E-05

1.643E-07

-1.242E-09

2.938E-12

Material Data

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background image

www.mag-inc.com

79

Material Data

Permeability versus Temperature Curves

44 - old 3 - 35

Change compared withµ

25˚C

= µ

25˚C

µ

T

- µ

25˚C

= a + bT + cT

2

Change compared withµ

25˚C

= µ

25˚C

µ

T

- µ

25˚C

= a + bT + cT

2

+ dT

3

+ eT

4

Perm

a

b

c

High Flux

14µ

-2.500E-03

9.670E-05

5.560E-08

26µ

-3.300E-03

1.290E-04

3.800E-08

60µ

-4.400E-03

1.740E-04

4.090E-08

125µ

-6.000E-03

2.400E-04

3.220E-08

147µ

-7.900E-03

3.140E-04

7.310E-08

160µ

-9.200E-03

3.670E-04

1.750E-08

MPP

14µ

-1.300E-03

4.750E-05

1.300E-07

26µ

-1.431E-03

5.265E-05

1.837E-07

60µ

-1.604E-03

5.945E-05

1.875E-07

125µ

-1.939E-03

7.013E-05

2.967E-07

147µ

-2.308E-03

8.497E-05

2.943E-07

160µ

-2.308E-03

8.497E-05

2.943E-07

 173µ

-2.308E-03

8.497E-05

2.943E-07

200µ

-2.528E-03

9.211E-05

3.601E-07

300µ

-2.528E-03

9.211E-05

3.601E-07

550µ

-1.309E-02

4.716E-04

2.086E-06

Fit Formula

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Permeability versus AC Flux Curves

Material Data

MAGNETICS

80

Kool Mµ

®

AC Flux Density (Tesla)

0.001

0.003

0.005 0.007

0.03

0.05

0.07

0.01

0.1

0.2

6.0%

5.5%

5.0%

4.5%

4.0%

3.5%

3.0%

2.5%

2.0%

1.5%

1.0%

0.5%

0.0%

+/- % Initial Permeability (

µ

i

)

125µ

90µ

75µ

60µ

40µ

26µ

14µ

Kool Mµ

®

 MAX

AC Flux Density (Tesla)

0.001

0.003

0.005 0.007

0.03

0.05

0.07

0.01

0.1

0.3

5.0%

4.5%

4.0%

3.5%

3.0%

2.5%

2.0%

1.5%

1.0%

0.5%

0.0%

+/- % Initial Permeability (

µ

i

)

26µ

40µ

60µ

14µ

19µ

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Core Loss Density Curves

www.mag-inc.com

81

Material Data

Permeability versus AC Flux Curves

Kool Mµ

® 

AC Flux Density (Tesla)

0.001

0.003

0.005 0.007

0.03

0.05

0.07

0.01

0.1

0.2

2.0%

1.5%

1.0%

0.5%

0.0%

+/- % Initial Permeability (

µ

i

)

26µ

60µ

XF

lux

®

AC Flux Density (Tesla)

0.001

0.003

0.005 0.007

0.03

0.05 0.07

0.3

0.5

0.7

0.01

0.1

1

30%
28%
26%
24%
22%
20%
18%
16%
14%
12%
10%

8%
6%
4%
2%
0%

+/- % Initial Permeability (

µ

i

)

90µ

75µ

60µ

40µ

26µ

14µ

125µ

Material Data

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Permeability versus AC Flux Curves

Material Data

MAGNETICS

82

High Flux 

Edge

®

AC Flux Density (Tesla)

0.001

0.003

0.005 0.007

0.03

0.05 0.07

0.3

0.01

0.1

0.4

2.0%

1.5%

1.0%

0.5%

0.0%

+/- % Initial Permeability (

µ

i

)

60µ

26µ

AC Flux Density (Tesla)

0.001

0.003

0.005 0.007

0.03

0.05

0.07

0.3

0.5

0.01

0.1

0.6

26%
24%
22%
20%
18%
16%
14%
12%
10%

8%
6%
4%
2%
0%

+/- % Initial Permeability 

i

)

125 perm

90

75

60

40

26

160

147

14
173

200

250

300

550

500

160µ

147µ

125µ

60µ

26µ

14µ

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Core Loss Density Curves

www.mag-inc.com

83

Permeability versus AC Flux Curves

AC Flux Density (Tesla)

0.001

0.003

0.005

0.007

0.03

0.05

0.07

0.01

0.1

0.2

0%

-2%

2%

4%

6%

8%

10%

12%

14%

16%

18%

20%

22%

+/- % Initial Permeability (

µ

i

)

125 perm

90

75

60

40

26

160

147

14
173

200

250

300

550

500

550µ

AC Flux Density (Tesla)

0.001

0.01

0.1

-1%

-2%

0%

1%

2%

3%

4%

5%

+/- % Initial Permeability (

µ

i

)

125 perm

90

75

60

40

26

160

147

14
173

200

250

300

550

500

0.003

0.005

0.007

0.03

0.05

0.07

0.2

300µ

200µ

147µ-

173µ

60µ

26µ, 14µ

125µ

MPP 14µ-300µ

MPP 550µ

Material Data

Magnetics-Powder-Core-Catalog-2020-html.html
background image

MAGNETICS

84

Material Data

Permeability versus AC Flux Curves

49 - old 3 - 24

!

i

= a + bB + cB

2

+ dB

3

+ eB

4

Q

V

whereB isTesla

Fit Formula

Perm

a

b

c

d

e

Kool Mµ

®

14µ

-2.478E-04

2.512E-01

-3.347E+00

1.599E+01

-2.766E+01

26µ

-4.602E-04

4.664E-01

-6.215E+00

2.969E+01

-5.136E+01

40µ

-7.081E-04

7.176E-01

-9.562E+00

4.568E+01

-7.902E+01

60µ

-1.062E-03

1.076E+00

-1.434E+01

6.852E+01

-1.185E+02

75µ

-1.328E-03

1.345E+00

-1.793E+01

8.565E+01

-1.482E+02

90µ

-1.593E-03

1.615E+00

-2.151E+01

1.028E+02

-1.778E+02

125µ

-2.213E-03

2.242E+00

-2.988E+01

1.427E+02

-2.469E+02

Kool Mµ

® 

MAX

14µ

-9.942E-05

2.814E-01

-2.949E+00

1.308E+01

-2.288E+01

19µ

-1.349E-04

3.819E-01

-4.003E+00

1.775E+01

-3.105E+01

26µ

-1.846E-04

5.226E-01

-5.477E+00

2.429E+01

-4.249E+01

40µ

-2.841E-04

8.040E-01

-8.427E+00

3.737E+01

-6.537E+01

60µ

-4.261E-04

1.206E+00

-1.264E+01

5.606E+01

-9.806E+01

Kool Mµ

®

 Hƒ

26µ

0

2.464E-01

-2.368E+00

7.404E+00

-8.877E+00

60µ

0

5.686E-01

-5.465E+00

1.709E+01

-2.049E+01

X

F

lux

®

19µ

4.533E-04

5.521E-01

-1.516E+00

1.750E+00

-7.866E-01

26µ

6.475E-04

7.888E-01

-2.166E+00

2.499E+00

-1.124E+00

40µ

8.418E-04

1.025E+00

-2.816E+00

3.249E+00

-1.461E+00

60µ

1.036E-03

1.262E+00

-3.466E+00

3.999E+00

-1.798E+00

75µ

1.295E-03

1.578E+00

-4.333E+00

4.999E+00

-2.248E+00

90µ

1.554E-03

1.893E+00

-5.199E+00

5.999E+00

-2.697E+00

125µ

1.813E-03

2.209E+00

-6.066E+00

6.998E+00

-3.147E+00

Edge

®

26µ

0

1.647E-02

2.767E-01

-8.511E-01

9.325E-08

60µ

0

3.801E-02

6.385E-01

-1.964E+00

2.152E-07

High Flux

14µ

-1.000E-03

5.458E-01

-1.930E+00

2.598E+00

-1.228E+00

26µ

-2.000E-03

1.020E+00

-3.696E+00

5.099E+00

-2.529E+00

60µ

0

1.476E+00

-5.695E+00

9.395E+00

-6.182E+00

125µ

0

1.934E+00

-6.792E+00

1.014E+01

-6.347E+00

147µ

0

2.350E+00 

-8.895E+00

1.465E+01

-9.716E+00

160µ

-2.000E-03

2.910E+00 

-1.224E+01

2.263E+01

-1.590E+01

MPP

14µ

-5.000E-04

1.186E-01

-5.096E-01

-2.727E+00

0

26µ

-5.000E-04

1.186E-01

-5.096E-01

-2.727E+00

0

60µ

-1.000E-03

1.708E-01 

-6.675E-01

-1.792E+00

0

125µ

-1.000E-03

2.960E-01 

-1.561E+00

8.254E-01

0

147µ

-2.000E-03

4.393E-01 

-2.591E+00

3.446E+00

0

160µ

-2.000E-03

4.393E-01 

-2.591E+00

3.446E+00

0

173µ

-2.000E-03

4.393E-01 

-2.591E+00

3.446E+00

0

200µ

-1.000E-03

5.145E-01

-2.688E+00

3.308E+00

0

300µ

-2.000E-03

9.038E-01 

-5.112E+00

7.055E+00

0

550µ

-9.000E-03

4.042E+00 

-2.240E+01

3.123E+01

0

Magnetics-Powder-Core-Catalog-2020-html.html
background image

www.mag-inc.com

85

Material Data

Permeability versus Frequency Curves

Frequency (MHz)

0.1

0.3

0.5

0.7

3

5

7

1

10

5%

0%

-5%

-10%

-15%

-20%

-25%

-30%

-35%

-40%

+/- % Initial Permeability (

µ

i

)

26µ

40µ

60µ

75µ

90µ

125µ

14µ

40µ

60µ

75µ and 90µ

125µ

Frequency (MHz)

0.1

0.3

0.5

0.7

3

5

7

1

10

1%

0%

-1%

-2%

-3%

-4%

-5%

-6%

-7%

-8%

-9%

-10%

+/- % Initial Permeability (

µ

i

)

19µ

26µ

40µ

60µ

14µ

40µ

60µ

75µ and 90µ

125µ

Kool Mµ

®

 MAX

Kool Mµ

®

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Cor

e Selection

MAGNETICS

86

Permeability versus Frequency Curves

Frequency (MHz)

0.1

0.3

0.5

0.7

3

5

7

1

10

1%

0%

-1%

-2%

-3%

-4%

-5%

-6%

-7%

-8%

-9%

-10%

+/- % Initial Permeability (

µ

i

)

26µ

60µ

40µ

60µ

75µ and 90µ

125µ

Frequency (MHz)

0.1

0.3

0.5

0.7

3

5

7

1

10

5%

0%

-5%

-10%

-15%

-20%

-25%

-30%

-35%

-40%

+/- % Initial Permeability (

µ

i

)

26µ

125µ

40µ-60µ

75µ-90µ

19µ

60µ

40µ

60µ

75µ and 90µ

125µ

Kool Mµ

® 

XF

lux

®

Magnetics-Powder-Core-Catalog-2020-html.html
background image

www.mag-inc.com

87

Permeability versus Frequency Curves

Material Data

Frequency (MHz)

0.1

0.3

0.5

0.7

3

5

7

1

10

-50%

-40%

-30%

-20%

-10%

0%

+/- % Initial Permeability (

µ

i

)

125 perm

90

75

60

40

26

160

147

14
173

200

250

300

550

500

14µ

26µ

60µ

125µ

147µ - 

160µ

Frequency (MHz)

0.1

0.3

0.5

0.7

3

5

7

1

10

1%

0%

-1%

-2%

-3%

-4%

-5%

-6%

-7%

-8%

-9%

-10%

+/- % Initial Permeability (

µ

i

)

26µ

60µ

60µ

40µ

60µ

75µ and 90µ

125µ

High Flux  

Edge

®

Magnetics-Powder-Core-Catalog-2020-html.html
background image

MAGNETICS

88

Material Data

Permeability versus Frequency Curves

MPP

Frequency (MHz)

0.01

0.03

0.05 0.07

0.3

0.5

0.7

3

5

7

0.1

1

10

-30%

-25%

-20%

-15%

-10%

-5%

0

+/- % Initial Permeability (

µ

i

)

125 perm

90

75

60

40

26

160

147

14
173

200

250

300

550

500

14µ

26µ

60µ

125µ

147µ

160µ - 

173µ

200µ

300µ

550µ

Magnetics-Powder-Core-Catalog-2020-html.html
background image

www.mag-inc.com

89

Material Data

Perm

a

b

c

d

e

Kool Mµ

®

14µ

1.911E-04

-4.298E-03

-5.002E-05

1.373E-05

-6.261E-07

26µ

3.550E-04

-7.982E-03

-9.290E-05

2.551E-05

-1.163E-06

40µ

5.461E-04

-1.228E-02

-1.429E-04

3.924E-05

-1.789E-06

60µ

8.191E-04

-1.842E-02

-2.144E-04

5.886E-05

-2.683E-06

75µ

1.024E-03

-2.303E-02

-2.680E-04

7.358E-05

-3.354E-06

90µ

1.229E-03

-2.763E-02

-3.216E-04

8.829E-05

-4.025E-06

125µ

1.707E-03

-3.838E-02

-4.466E-04

1.226E-04

-5.590E-06

Kool Mµ

® 

MAX

14µ

8.465E-05

-1.904E-03

-2.216E-05

6.083E-06

-2.773E-07

19µ

1.149E-04

-2.583E-03

-3.007E-05

8.255E-06

-3.763E-07

26µ

1.572E-04

-3.535E-03

-4.115E-05

1.130E-05

-5.149E-07

40µ

2.418E-04

-5.439E-03

-6.330E-05

1.738E-05

-7.922E-07

60µ

3.628E-04

-8.158E-03

-9.496E-05

2.607E-05

-1.188E-06

Kool Mµ

®

 Hƒ

26µ

0

-4.371E-03

3.095E-04

-1.344E-05

0

60µ

0

-9.179E-03

6.500E-04

-2.822E-05

0

X

F

lux

®

19µ

4.454E-04

-7.911E-03

-3.405E-03

4.290E-04

-1.724E-05

26µ

6.652E-04

-1.222E-02

-2.602E-03

3.447E-04

-1.399E-05

40-60µ

1.419E-03

-2.699E-02

1.514E-04

5.563E-05

-2.844E-06

75-90µ

2.440E-03

-4.699E-02

3.880E-03

-3.358E-04

1.225E-05

125µ

3.775E-03

-7.315E-02

8.755E-03

-8.477E-04

3.199E-05

Edge

®

26µ

0

-4.484E-03

3.175E-04

-1.379E-05

0

60µ

0

-1.035E-02

7.327E-04

-3.182E-05

0

High Flux

14µ

0

-1.070E-02

5.960E-04

-4.920E-04

3.070E-05

26µ

0

-2.560E-02

3.430E-03

-7.340E-04

3.990E-05

60µ

0

-3.870E-02

3.050E-03

-5.490E-04

2.690E-05

125µ

0

-8.600E-02

1.140E-02

-1.370E-03

6.050E-05

147µ

0

-8.170E-02

7.330E-03

-6.400E-04

2.390E-05

160µ

0

-8.590E-02

7.220E-03

-5.530E-04

1.880E-05

MPP

14µ

0

-2.320E-03

7.630E-04

-5.070E-04

3.170E-05

26µ

0

-1.560E-02

5.190E-03

-1.160E-03

6.230E-05

60µ

0

-1.820E-02

4.320E-03

-9.780E-04

5.360E-05

125µ

0

-8.430E-02

1.590E-02

-2.270E-03

1.080E-04

147µ

0

-1.110E-01

2.040E-02

-2.810E-03

1.300E-04

160µ

0

-1.290E-01

2.390E-02

-3.080E-03

1.410E-04

173µ

0

-1.290E-01

2.390E-02

-3.080E-03

1.410E-04

200µ

0

-1.610E-01

3.820E-02

-5.170E-03

2.160E-04

300µ

0

-2.590E-01

5.570E-02

-6.530E-03

2.780E-04

550µ

0

-4.590E-01

-3.300E+00

8.140E+00

-5.730E+00

Fit Formula

Permeability versus Frequency Curves

52 - old 3 - 24

!

i

= a + bf + cf

2

+ df

3

+ ef

4

where f = megahertz (MHz)

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Cor

e Data

MAGNETICS

90

0.060"

0.070”

0.140”

3.56 mm OD

Before Finish (nominal)

3.56 mm/0.140 in

1.78 mm/0.070 in

 1.52 mm/0.060 in

After Finish (limits)

4.19 mm/0.165 in

1.27 mm/0.050 in

 2.16 mm/0.085 in

Core Dimensions 

OD ID HT

FOR PLACEMENT ONLY

Permeability (µ) 

A

L

 ± 8%

Kool Mµ A

L

 

± 15%

Part Number

Kool Mµ

®

Kool Mµ

® 

MAX Kool Mµ

® 

XF

lux

®

High Flux

Edge

®

MPP

60

13

77141

-

-

-

-

-

-

75

16

77445

-

-

-

-

-

-

90

19

77444

-

-

-

-

-

-

125

26

77140

-

-

-

-

-

55140

147

31

-

-

-

-

-

-

55139

160

33

-

-

-

-

-

-

55138

173

36

-

-

-

-

-

-

55134

200

42

-

-

-

-

-

-

55137

300

62

-

-

-

-

-

-

55135

Physical and Magnetic Parameters

Window Area

1.27 mm

2

Cross Section (Ae)

1.30 mm

2

Path Length (Le)

8.06 mm

Effective Volume (Ve)

10.5 mm

3

Area Product

1.65 mm

4

Winding Turn Length* 

Winding Factor

Length/Turn (mm)

0%

7.24

20%

7.56

25%

7.65

30%

7.70

35%

7.81

40%

7.89

45%

7.98

50%

8.08

60%

8.27

70%

8.48

Wound Coil Dimensions*

40% Winding Factor

OD

4.30 mm

HT

2.56 mm

Completely Full Window

Max OD

4.95 mm

Max HT

2.74 mm

Surface Area*

Unwound Core

60 mm

2

40% Winding Factor

70 mm

2

Kool Mµ A

L

 vs. DC Bias

A

L

 (nH/

T  )

2

A·T

27
24
21
18
15
12

9
6
3
0

0

10

20

30

40

50

60

5

15

25

35

45

55

60µ

75µ

90µ

125µ

55140A2

* See Toroid Winding pg. 19

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Cor
e Data

www.mag-inc.com

91

Kool Mµ A

L

 vs. DC Bias

A

L

 (nH/

T  )

2

A·T

36
32
28
24
20
16
12

8
4
0

0

10

20

30

40

50

60

70

60µ

75µ

90µ

125µ

0.100”

0.088”

0.155”

3.94 mm OD

Permeability (µ) 

A

L

 ± 8%

Kool Mµ A

L

 

± 15%

Part Number

Kool Mµ

®

Kool Mµ

® 

MAX Kool Mµ

® 

XF

lux

®

High Flux

Edge

®

MPP

60

17

77151

-

-

-

-

-

-

75

21

77155

-

-

-

-

-

-

90

25

77154

-

-

-

-

-

-

125

35

77150

-

-

-

-

-

55150

147

41

-

-

-

-

-

-

55149

160

45

-

-

-

-

-

-

55148

173

48

-

-

-

-

-

-

55144

200

56

-

-

-

-

-

-

55147

300

84

-

-

-

-

-

-

55145

Before Finish (nominal)

3.94 mm/0.155 in

2.24 mm/0.088 in

 2.54 mm/0.100 in

After Finish (limits)

4.57 mm/0.180 in

1.73 mm/0.068 in

 3.18 mm/0.125 in

Physical and Magnetic Parameters

Window Area

2.32 mm

2

Cross Section (Ae)

2.11 mm

2

Path Length (Le)

9.42 mm

Effective Volume (Ve)

19.9 mm

3

Area Product

4.90 mm

4

Surface Area*

Unwound Core

90 mm

2

40% Winding Factor

110 mm

2

Winding Turn Length* 

Winding Factor

Length/Turn (mm)

0%

9.20

20%

9.64

25%

9.76

30%

9.84

35%

9.98

40%

10.1

45%

10.2

50%

10.3

60%

10.6

70%

10.9

Wound Coil Dimensions*

40% Winding Factor

OD

4.85 mm

HT

3.73 mm

Completely Full Window

Max OD

5.77 mm

Max HT

4.75 mm

Core Dimensions 

OD ID HT

55150A2

* See Toroid Winding pg. 19

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Cor

e Data

MAGNETICS

92

0.100”

0.183”
0.093”

4.65 mm OD

Before Finish (nominal)

4.65 mm/0.183 in

2.36 mm/0.093 in

2.54 mm/0.100 in

After Finish (limits)

5.28 mm/0.208 in

1.85 mm/0.073 in

 3.18 mm/0.125 in

FOR PLACEMENT ONLY

Physical and Magnetic Parameters

Window Area

2.69 mm

2

Cross Section (Ae)

2.85 mm

2

Path Length (Le)

10.6 mm

Effective Volume (Ve)

30.3 mm

3

Area Product

7.66 mm

4

Surface Area*

Unwound Core

110 mm

2

40% Winding Factor

130 mm

2

Kool Mµ A

L

 vs. DC Bias

A

L

 (nH/

T  )

2

A·T

44
40
36
32
28
24
20
16
12

8
4
0

0

10

20

30

40

50

60

70

80

90

60µ

75µ

90µ

125µ

Winding Turn Length*

Winding Factor

Length/Turn (mm)

0%

9.79

20%

10.3

25%

10.4

30%

10.5

35%

10.6

40%

10.7

45%

10.9

50%

11.0

60%

11.3

70%

11.6

Wound Coil Dimensions*

40% Winding Factor

OD

5.56 mm

HT

3.73 mm

Completely Full Window

Max OD

6.65 mm

Max HT

4.94 mm

55180A2

Core Dimensions 

OD ID HT

Permeability (µ) 

A

L

 ± 8%

Kool Mµ A

L

 

± 15%

Part Number

Kool Mµ

®

Kool Mµ

® 

MAX Kool Mµ

® 

XF

lux

®

High Flux

Edge

®

MPP

60

20

77181

-

-

-

-

-

55181

75

25

77185

-

-

-

-

-

-

90

30

77184

-

-

-

-

-

-

125

42

77180

-

-

-

-

-

55180

147

49

-

-

-

-

-

-

55179

160

53

-

-

-

-

-

-

55178

173

57

-

-

-

-

-

-

55174

200

67

-

-

-

-

-

-

55177

300

99

-

-

-

-

-

-

55175

* See Toroid Winding pg. 19

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Cor
e Data

www.mag-inc.com

93

Kool Mµ A

L

 vs. DC Bias

A

L

 (nH/

T  )

2

A·T

55
50
45
40
35
30
25
20
15
10

5
0

0

10

20

30

40

50

60

70

80

90

100

60µ

26µ
14µ

75µ

90µ

125µ

0.110”

0.110”

0.250”

6.35 mm OD

Before Finish (nominal)

6.35 mm/0.250 in

2.79 mm/0.110 in

 2.79 mm/0.110 in

After Finish (limits)

6.99 mm/0.275 in

2.29 mm/0.090 in

 3.43 mm/0.135 in

Physical and Magnetic Parameters

Window Area

4.08 mm

2

Cross Section (Ae)

4.70 mm

2

Path Length (Le)

13.6 mm

Effective Volume (Ve)

64.0 mm

3

Area Product

19.2 mm

4

Surface Area*

Unwound Core

170 mm

2

40% Winding Factor

200 mm

2

Winding Turn Length*

Winding Factor

Length/Turn (mm)

0%

11.6

20%

12.2

25%

12.3

30%

12.4

35%

12.6

40%

12.8

45%

12.9

50%

13.1

60%

13.4

70%

13.9

Wound Coil Dimensions*

40% Winding Factor

OD

7.34 mm

HT

4.12 mm

Completely Full Window

Max OD

8.81 mm

Max HT

5.38 mm

55020A2

Core Dimensions 

OD ID HT

Permeability (µ) 

A

L

 ± 8%

Kool Mµ A

L

 

± 12%

Part Number

Kool Mµ

®

Kool Mµ

® 

MAX Kool Mµ

® 

XF

lux

®

High Flux

Edge

®

MPP

14

6

77023

-

-

-

58023

-

55023

26

10

77022

-

-

-

58022

-

55022

60

24

77021

-

-

-

58021

-

55021

75

30

77825

-

-

-

-

-

-

90

36

77824

-

-

-

-

-

-

125

50

77020

-

-

-

58020

-

55020

147

59

-

-

-

-

58019

-

55019

160

64

-

-

-

-

58018

-

55018

173

69

-

-

-

-

-

-

55014

200

80

-

-

-

-

-

-

55017

300

120

-

-

-

-

-

-

55015

550

220

-

-

-

-

-

-

55016

* See Toroid Winding pg. 19

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Cor

e Data

MAGNETICS

94

0.100”

0.105”

0.260”

6.60 mm OD 

Before Finish (nominal)

6.60 mm/0.260 in

2.67 mm/0.105 in

 2.54 mm/0.100 in

After Finish (limits)

7.24 mm/0.285 in

2.16 mm/0.085 in

 3.18 mm/0.125 in

FOR PLACEMENT ONLY

Physical and Magnetic Parameters

Window Area

3.63 mm²

Cross Section (Ae)

4.76 mm²

Path Length (Le)

13.6 mm

Effective Volume (Ve)

64.9 mm³

Area Product

17.3 mm

4

Surface Area*

Unwound Core

170 mm²

40% Winding Factor

190 mm²

Kool Mµ A

L

 vs. DC Bias

A

L

 (nH/

T  )

2

A·T

55
50
45
40
35
30
25
20
15
10

5
0

0

10

20

30

40

50

60

70

80

90

100

110

60µ

26µ

14µ

75µ

90µ

125µ

Winding Turn Length*

Winding Factor

Length/Turn (mm)

0%

11.4

20%

12.0

25%

12.2

30%

12.3

35%

12.4

40%

12.6

45%

12.7

50%

12.9

60%

13.2

70%

13.6

Wound Coil Dimensions*

40% Winding Factor

OD

7.41 mm

HT

3.87 mm

Completely Full Window

Max OD

9.12 mm

Max HT

5.13 mm

55240A2

Core Dimensions 

OD ID HT

Permeability (µ) 

A

L

 ± 8%

Kool Mµ A

L

 

± 12%

Part Number

Kool Mµ

®

Kool Mµ

® 

MAX Kool Mµ

® 

XF

lux

®

High Flux

Edge

®

MPP

14

6

77243

-

-

-

58243

-

55243

26

11

77242

-

-

-

58242

-

55242

60

26

77241

-

-

-

58241

-

55241

75

32

77245

-

-

-

-

-

-

90

39

77244

-

-

-

-

-

-

125

54

77240

-

-

-

58240

-

55240

147

64

-

-

-

-

58239

-

55239

160

69

-

-

-

-

58238

-

55238

173

75

-

-

-

-

-

-

55234

200

86

-

-

-

-

-

-

55237

300

130

-

-

-

-

-

-

55235

550

242

-

-

-

-

-

-

55236

* See Toroid Winding pg. 19

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Cor
e Data

www.mag-inc.com

95

Kool Mµ A

L

 vs. DC Bias

A

L

 (nH/

T  )

2

A·T

110
100

90
80
70
60
50
40
30
20
10

0

0

10

20

30

40

50

60

70

80

90

100

110

60µ

26µ
14µ

75µ

90µ

125µ

0.188”

0.105”

0.260”

6.60 mm OD

Before Finish (nominal)

6.60 mm/0.260 in

2.67 mm/0.105 in

 4.78 mm/0.188 in

After Finish (limits)

7.24 mm/0.285 in

2.16 mm/0.085 in

 5.41 mm/0.213 in

Physical and Magnetic Parameters

Window Area

3.63 mm

2

Cross Section (Ae)

9.20 mm

2

Path Length (Le)

13.6 mm

Effective Volume (Ve)

125 mm

3

Area Product

33.4 mm

4

Surface Area*

Unwound Core

230 mm

2

40% Winding Factor

260 mm

2

Winding Turn Length*

Winding Factor

Length/Turn (mm)

0%

15.9

20%

16.4

25%

16.6

30%

16.7

35%

16.9

40%

17.0

45%

17.2

50%

17.3

60%

17.7

70%

18.0

Wound Coil Dimensions*

40% Winding Factor

OD

7.41 mm

HT

6.11 mm

Completely Full Window

Max OD

9.17 mm

Max HT

7.42 mm

55270A2

Core Dimensions 

OD ID HT

Permeability (µ) 

A

L

 ± 8%

Kool Mµ A

L

 

± 12%

Part Number

Kool Mµ

®

Kool Mµ

® 

MAX Kool Mµ

® 

XF

lux

®

High Flux

Edge

®

MPP

14

12

77273

-

-

-

58273

-

55273

26

21

77272

-

-

-

58272

-

55272

60

50

77271

-

-

-

58271

-

55271

75

62

77875

-

-

-

-

-

-

90

74

77874

-

-

-

-

-

-

125

103

77270 

-

-

-

58270

-

55270

147

122

-

-

-

-

58269

-

55269

160

132

-

-

-

-

58268

-

55268

173

144

-

-

-

-

-

-

55264

200

165

-

-

-

-

-

-

55267

300

247

-

-

-

-

-

-

55265

550

466

-

-

-

-

-

-

55266

* See Toroid Winding pg. 19

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Cor

e Data

MAGNETICS

96

0.270”
0.156”

0.200”

6.86 mm OD

Before Finish (nominal)

6.86 mm/0.270 in

3.96 mm/0.156 in

 5.08 mm/0.200 in

After Finish (limits)

7.49 mm/0.295 in

3.45 mm/0.136 in

 5.72 mm/0.225 in

Physical and Magnetic Parameters

Window Area

9.35 mm²

Cross Section (Ae)

7.25 mm²

Path Length (Le)

16.5 mm

Effective Volume (Ve)

120 mm³

Area Product

67.8 mm

4

Surface Area*

Unwound Core

260 mm

2

40% Winding Factor

330 mm

2

Kool Mµ A

L

 vs. DC Bias

A

L

 (nH/

T  )

2

A·T

72
64
56
48
40
32
24
16

8
0

0

10

20

30

40

50

60

70

80

90

100

110

120

130

140

60µ

26µ

14µ

75µ

90µ

125µ

Winding Turn Length*

Winding Factor

Length/Turn (mm)

0%

15.5

20%

16.4

25%

16.6

30%

16.8

35%

17.0

40%

17.3

45%

17.5

50%

17.8

60%

18.3

70%

18.9

Wound Coil Dimensions*

40% Winding Factor

OD

8.06 mm

HT

6.84 mm

Completely Full Window

Max OD

9.60 mm

Max HT

10.0 mm

55410A2

Core Dimensions 

OD ID HT

Permeability (µ) 

A

L

 ± 8%

Kool Mµ A

L

 

± 12%

Part Number

Kool Mµ

®

Kool Mµ

® 

MAX Kool Mµ

® 

XF

lux

®

High Flux

Edge

®

MPP

14

8

77413

-

-

-

58413

-

55413

26

14

77412

-

-

-

58412

-

55412

60

33

77411

-

-

-

58411

-

55411

75

42

77415

-

-

-

-

-

-

90

50

77414

-

-

-

-

-

-

125

70

77410

-

-

-

58410

-

55410

147

81

-

-

-

-

58409

-

55409

160

89

-

-

-

-

58408

-

55408

173

95

-

-

-

-

-

-

55404

200

112

-

-

-

-

-

-

55407

300

166

-

-

-

-

-

-

55405

* See Toroid Winding pg. 19

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Cor
e Data

www.mag-inc.com

97

0.125”

0.156”

0.310”

7.87 mm OD

Before Finish (nominal)

7.87 mm/0.310 in

3.96 mm/0.156 in

 3.18 mm/0.125 in

After Finish (limits)

8.51 mm/0.335 in

3.45 mm/0.136 in

 3.81 mm/0.150 in

Physical and Magnetic Parameters

Window Area

9.35 mm²

Cross Section (Ae)

5.99 mm²

Path Length (Le)

17.9 mm

Effective Volume (Ve)

107 mm³

Area Product

56.0 mm

4

Surface Area*

Unwound Core

240 mm

2

40% Winding Factor

310 mm

2

Kool Mµ A

L

 vs. DC Bias

A

L

 (nH/

T  )

2

A·T

55
50
45
40
35
30
25
20
15
10

5
0

0

20

40

60

80

100

120

140

160

60µ

26µ

14µ

75µ

90µ

125µ

Winding Turn Length*

Winding Factor

Length/Turn (mm)

0%

12.7

20%

13.6

25%

13.8

30%

14.0

35%

14.3

40%

14.5

45%

14.7

50%

15.0

60%

15.5

70%

16.1

Wound Coil Dimensions*

40% Winding Factor

OD

9.07 mm

HT

4.93 mm

Completely Full Window

Max OD

11.0 mm

Max HT

6.73 mm

55030A2

Core Dimensions 

OD ID HT

Permeability (µ) 

A

L

 ± 8%

Kool Mµ A

L

 

± 12%

Part Number

Kool Mµ

®

Kool Mµ

® 

MAX Kool Mµ

® 

XF

lux

®

High Flux

Edge

®

MPP

14

6

77033

-

-

-

58033

-

55033

26

11

77032

-

-

-

58032

-

55032

60

25

77031

-

-

-

58031

-

55031

75

31

77835

-

-

-

-

-

-

90

37

77834

-

-

-

-

-

-

125

52

77030

-

-

-

58030

-

55030

147

62

-

-

-

-

58029

-

55029

160

66

-

-

-

-

58028

-

55028

173

73

-

-

-

-

-

-

55024

200

83

-

-

-

-

-

-

55027

300

124

-

-

-

-

-

-

55025

550

229

-

-

-

-

-

-

55026

* See Toroid Winding pg. 19

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Cor

e Data

MAGNETICS

98

0.125”

0.188”

0.380”

9.65 mm OD

Before Finish (nominal)

9.65 mm/0.380 in

4.78 mm/0.188 in

 3.18 mm/0.125 in

After Finish (limits)

10.29 mm/0.405 in

4.27 mm/0.168 in

 3.81 mm/0.150 in

Physical and Magnetic Parameters

Window Area

14.3 mm²

Cross Section (Ae)

7.52 mm²

Path Length (Le)

21.8 mm 

Effective Volume (Ve)

164 mm³

Area Product

107 mm

4

Surface Area*

Unwound Core

310 mm

2

40% Winding Factor

410 mm

2

Kool Mµ A

L

 vs. DC Bias

A

L

 (nH/

T  )

2

A·T

55
50
45
40
35
30
25
20
15
10

5
0

0

20

40

60

80

100

120

140

160

60µ

26µ

14µ

75µ

90µ

125µ

Winding Turn Length*

Winding Factor

Length/Turn (mm)

0%

13.6

20%

14.7

25%

15.0

30%

15.3

35%

15.6

40%

15.9

45%

16.2

50%

16.5

60%

17.2

70%

17.9

Wound Coil Dimensions*

40% Winding Factor

OD

11.0 mm

HT

5.17 mm

Completely Full Window

Max OD

13.4 mm

Max HT

7.44 mm

55280A2

Core Dimensions 

OD ID HT

Permeability (µ) 

A

L

 ± 8%

Kool Mµ A

L

 

± 12%

Part Number

Kool Mµ

®

Kool Mµ

® 

MAX Kool Mµ

® 

XF

lux

®

High Flux

Edge

®

MPP

14

6

77283

-

-

-

58283

-

55283

26

11

77282

-

-

-

58282

-

55282

60

25

77281

-

-

-

58281

-

55281

75

32

77885

-

-

-

-

-

-

90

38

77884

-

-

-

-

-

-

125

53

77280

-

-

-

58280

-

55280

147

63

-

-

-

-

58279

-

55279

160

68

-

-

-

-

58278

-

55278

173

74

-

-

-

-

-

-

55274

200

84

-

-

-

-

-

-

55277

300

128

-

-

-

-

-

-

55275

550

232

-

-

-

-

-

-

55276

* See Toroid Winding pg. 19

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Cor
e Data

www.mag-inc.com

99

Kool Mµ A

L

 vs. DC Bias

A

L

 (nH/

T  )

2

A·T

70
63
56
49
42
35
28
21
14

7
0

0

20

40

60

80

100

120

140

160

180

60µ

26µ

14µ

75µ

90µ

125µ

0.156”

0.188”

0.380”

9.65 mm OD

Before Finish (nominal)

9.65 mm/0.380 in

4.78 mm/0.188 in

 3.96 mm/0.156 in

After Finish (limits)

10.29 mm/0.405 in

4.27 mm/0.168 in

 4.60 mm/0.181 in

Physical and Magnetic Parameters

Window Area

14.3 mm

2

Cross Section (Ae)

9.45 mm

2

Path Length (Le)

21.8 mm

Effective Volume (Ve)

206 mm

3

Area Product

135 mm

4

Surface Area*

Unwound Core

350 mm²

40% Winding Factor

450 mm²

Winding Turn Length*

Winding Factor

Length/Turn (mm)

0%

15.2

20%

16.4

25%

16.6

30%

16.9

35%

17.2

40%

17.4

45%

17.8

50%

18.1

60%

18.7

70%

19.5

Wound Coil Dimensions*

40% Winding Factor

OD

11.0 mm

HT

5.96 mm

Completely Full Window

Max OD

13.4 mm

Max HT

8.20 mm

55290A2

Core Dimensions 

OD ID HT

Permeability (µ) 

A

L

 ± 8%

Kool Mµ A

L

 

± 12%

Part Number

Kool Mµ

®

Kool Mµ

® 

MAX Kool Mµ

® 

XF

lux

®

High Flux

Edge

®

MPP

14

7

77293

-

-

-

58293

-

55293

26

14

77292

-

-

-

58292

-

55292

60

32

77291

-

-

-

58291

-

55291

75

40

77295

-

-

-

-

-

-

90

48

77294

-

-

-

-

-

-

125

66

77290

-

-

-

58290

-

55290

147

78

-

-

-

-

58289

-

55289

160

84

-

-

-

-

58288

-

55288

173

92

-

-

-

-

-

-

55284

200

105

-

-

-

-

-

-

55287

300

159

-

-

-

-

-

-

55285

550

290

-

-

-

-

-

-

55286

* See Toroid Winding pg.19

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Cor

e Data

MAGNETICS

100

Kool Mµ A

L

 vs. DC Bias

A

L

 (nH/

T  )

2

A·T

70
63
56
49
42
35
28
21
14

7
0

0

20

40

60

80

100

120

140

160

180

60µ

26µ

14µ

75µ

90µ

125µ

0.156”

0.200”

0.400”

10.2 mm OD

Before Finish (nominal)

10.16 mm/0.400 in

5.08 mm/0.200 in

 3.96 mm/0.156 in

After Finish (limits)

10.80 mm/0.425 in

4.57 mm/0.180 in

 4.60 mm/0.181 in

Physical and Magnetic Parameters

Window Area

16.4 mm²

Cross Section (Ae)

9.57 mm²

Path Length (Le)

23.0 mm

Effective Volume (Ve)

220 mm³

Area Product

156 mm

4

Surface Area*

Unwound Core

370 mm

2

40% Winding Factor

480 mm

2

Winding Turn Length*

Winding Factor

Length/Turn (mm)

0%

15.4

20%

16.6

25%

16.9

30%

17.1

35%

17.5

40%

17.8

45%

18.1

50%

18.4

60%

19.2

70%

20.0

Wound Coil Dimensions*

40% Winding Factor

OD

11.5 mm

HT

5.96 mm

Completely Full Window

Max OD

14.1 mm

Max HT

8.46 mm

55040A2

Core Dimensions 

OD ID HT

Permeability (µ) 

A

L

 ± 8%

Kool Mµ A

L

 

± 12%

Part Number

Kool Mµ

®

Kool Mµ

® 

MAX Kool Mµ

® 

XF

lux

®

High Flux

Edge

®

MPP

14

7

77043

-

-

-

58043

-

55043

26

14

77042

-

-

-

58042

-

55042

60

32

77041

-

-

-

58041

-

55041

75

40

77845

-

-

-

-

-

-

90

48

77844

-

-

-

-

-

-

125

66

77040

-

-

-

58040

-

55040

147

78

-

-

-

-

58039

-

55039

160

84

-

-

-

-

58038

-

55038

173

92

-

-

-

-

-

-

55034

200

105

-

-

-

-

-

-

55037

300

159

-

-

-

-

-

-

55035

550

290

-

-

-

-

-

-

55036

* See Toroid Winding pg. 19

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Cor
e Data

www.mag-inc.com

101

Kool Mµ A

L

 vs. DC Bias

A

L

 (nH/

T  )

2

A·T

55
50
45
40
35
30
25
20
15
10

5
0

0

20

40

60

80

100

120

140

160

180

200

220

60µ

26µ

14µ

75µ

90µ

125µ

0.156”

0.250”

0.440”

11.2 mm OD

Before Finish (nominal)

11.18 mm/0.440 in

6.35 mm/0.250 in

 3.96 mm/0.156 in

After Finish (limits)

11.81 mm/0.465 in

5.84 mm/0.230 in

 4.60 mm/0.181 in

Physical and Magnetic Parameters

Window Area

26.8 mm²

Cross Section (Ae)

9.06 mm²

Path Length (Le)

26.9 mm

Effective Volume (Ve)

244 mm²

Area Product

243 mm

4

Surface Area*

Unwound Core

420 mm

2

40% Winding Factor

600 mm

2

Winding Turn Length*

Winding Factor

Length/Turn (mm)

0%

15.2

20%

16.7

25%

17.0

30%

17.4

35%

17.8

40%

18.1

45%

18.6

50%

19.0

60%

19.9

70%

20.9

Wound Coil Dimensions*

40% Winding Factor

OD

12.9 mm

HT

6.53 mm

Completely Full Window

Max OD

15.7 mm

Max HT

8.97 mm

55130A2

Core Dimensions 

OD ID HT

Permeability (µ) 

A

L

 ± 8%

Kool Mµ A

L

 

± 12%

Part Number

Kool Mµ

®

Kool Mµ

® 

MAX Kool Mµ

® 

XF

lux

®

High Flux

Edge

®

MPP

14

6

77133

-

-

-

58133

-

55133

26

11

77132

-

-

-

58132

-

55132

60

26

77131

-

-

-

58131

-

55131

75

32

77335

-

-

-

-

-

-

90

38

77334

-

-

-

-

-

-

125

53

77130

-

-

-

58130

-

55130

147

63

-

-

-

-

58129

-

55129

160

68

-

-

-

-

58128

-

55128

173

74

-

-

-

-

-

-

55124

200

85

-

-

-

-

-

-

55127

300

127

-

-

-

-

-

-

55125

* See Toroid Winding pg. 19

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Cor

e Data

MAGNETICS

102

55050A2

0.187”

0.300”

0.500”

12.7 mm OD

Before Finish (nominal)

12.70 mm/0.500 in

7.62 mm/0.300 in

 4.75 mm/0.187 in

After Finish (limits)

13.46 mm/0.530 in

6.99 mm/0.275 in

 5.51 mm/0.217 in

Physical and Magnetic Parameters

Window Area

38.3 mm

2

Cross Section (Ae)

10.9 mm

2

Path Length (Le)

31.2 mm

Effective Volume (Ve)

340 mm

3

Area Product

417 mm

4

Surface Area*

Unwound Core

560 mm

2

40% Winding Factor

800 mm

2

Kool Mµ A

L

 vs. DC Bias

A

L

 (nH/

T  )

2

A·T

60
55
50
45
40
35
30
25
20
15
10

5
0

0

20

40

60

80

100

120

140

160

180

200

220

240

260

280

300

60µ

26µ

40µ

14µ

75µ

90µ

125µ

Winding Turn Length*

Winding Factor

Length/Turn (mm)

0%

17.5

20%

19.3

25%

19.8

30%

20.1

35%

20.7

40%

21.1

45%

21.7

50%

22.1

60%

23.2

70%

24.5

Wound Coil Dimensions*

40% Winding Factor

OD

14.6 mm

HT

7.66 mm

Completely Full Window

Max OD

18.2 mm

Max HT

11.5 mm

Core Dimensions 

OD ID HT

Permeability (µ) 

A

L

 ± 8%

Part Number

Kool Mµ

®

Kool Mµ

® 

MAX Kool Mµ

® 

XF

lux

®

High Flux

Edge

®

MPP

14

6.4

77053

-

-

-

58053

-

55053

19

9

-

79057

-

78057

-

-

26

12

77052

79052

76052

78052

58052

59052

55052

40

18

77056

79056

-

78056

-

-

-

60

27

77051

79051

76051

78051

58051

59051

55051

75

34

77055

-

-

78055

-

-

-

90

40

77054

-

-

78054

-

-

-

125

56

77050

-

-

78050

58050

-

55050

147

67

-

-

-

-

58049

-

55049

160

72

-

-

-

-

58048

-

55048

173

79

-

-

-

-

-

-

55044

200

90

-

-

-

-

-

-

55047

300

134

-

-

-

-

-

-

55045

550

255

-

-

-

-

-

-

55046

* See Toroid Winding pg. 19

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Cor
e Data

www.mag-inc.com

103

Kool Mµ A

L

 vs. DC Bias

A

L

 (nH/

T  )

2

A·T

75

70

65

60

55

50

45

40

35

30

25

20

15

10

5

0

0

30

60

90

120

150

180

210

240

270

300

330

60µ

26µ

14µ

75µ

90µ

125µ

55120A2

0.250”

0.400”

0.653”

16.6 mm OD

Before Finish (nominal)

16.59 mm/0.653 in

10.16 mm/0.400 in

 6.35 mm/0.250 in

After Finish (limits)

17.27 mm/0.680 in

9.53 mm/0.375 in

 7.11 mm/0.280 in

Physical and Magnetic Parameters

Window Area

71.2 mm

2

Cross Section (Ae)

19.2 mm

2

Path Length (Le)

41.2 mm

Effective Volume (Ve)

791 mm

3

Area Product

1,370 mm

4

Surface Area*

Unwound Core

920 mm

2

40% Winding Factor

1,300 mm

2

Winding Turn Length*

Winding Factor

Length/Turn (mm)

0%

22.0

20%

24.4

25%

25.0

30%

25.6

35%

26.2

40%

26.8

45%

27.6

50%

28.3

60%

29.7

70%

31.4

Wound Coil Dimensions*

40% Winding Factor

OD

18.8 mm

HT

10.1 mm

Completely Full Window

Max OD

23.7 mm

Max HT

15.2 mm

Core Dimensions 

OD ID HT

Permeability (µ) 

A

L

 ± 8%

Part Number

Kool Mµ

®

Kool Mµ

® 

MAX Kool Mµ

® 

XF

lux

®

High Flux

Edge

®

MPP

14

8

77123

-

-

-

58123

-

55123

19

11

-

79226

-

78226

-

-

26

15

77122

79122

76122

78122

58122

59122

55122

40

24

77113

79113

-

78113

-

-

-

60

35

77121

79121

76121

78121

58121

59121

55121

75

43

77225

-

-

78225

-

-

-

90

52

77224

-

-

78224

-

-

-

125

72

77120

-

-

78120

58120

-

55120

147

88

-

-

-

-

58119

-

55119

160

92

-

-

-

-

58118

-

55118

173

104

-

-

-

-

-

-

55114

200

115

-

-

-

-

-

-

55117

300

173

-

-

-

-

-

-

55115

550

317

-

-

-

-

-

-

55116

* See Toroid Winding pg. 19

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Cor

e Data

MAGNETICS

104

55380A2

0.250”

0.380”

0.680”

17.3 mm OD

Before Finish (nominal)

17.27 mm/0.680 in

9.65 mm/0.380 in

 6.35 mm/0.250 in

After Finish (limits)

18.03 mm/0.710 in

9.02 mm/0.355 in

 7.11 mm/0.280 in

  

Physical and Magnetic Parameters

Window Area

63.8 mm

2

Cross Section (Ae)

23.2 mm

2

Path Length (Le)

41.4 mm

Effective Volume (Ve)

960 mm

3

Area Product

1,480 mm

4

Surface Area*

Unwound Core

990 mm

2

40% Winding Factor

1,400 mm

2

Kool Mµ A

L

 vs. DC Bias

A

L

 (nH/

T  )

2

A·T

90
80
70
60
50
40
30
20
10

0

0

30

60

90

120

150

180

210

240

270

300

330

360

60µ

40µ

26µ

14µ

75µ

90µ

125µ

Winding Turn Length*

Winding Factor

Length/Turn (mm)

0%

23.2

20%

25.6

25%

26.2

30%

26.6

35%

27.4

40%

28.0

45%

28.6

50%

29.3

60%

30.8

70%

32.4

Wound Coil Dimensions*

40% Winding Factor

OD

19.6 mm

HT

10.1 mm

Completely Full Window

Max OD

24.9 mm

Max HT

16.3 mm

Core Dimensions 

OD ID HT

Permeability (µ) 

A

L

 ± 8%

Part Number

Kool Mµ

®

Kool Mµ

® 

MAX Kool Mµ

® 

XF

lux

®

High Flux

Edge

®

MPP

14

10

77383

-

-

-

58383

-

55383

19

14

-

79387

-

78387

-

-

-

26

19

77382

79382

76382

78382

58382

59382

55382

40

28

77386

79386

-

78386

-

-

-

60

43

77381

79381

76381

78381

58381

59381

55381

75

53

77385

-

-

78385

-

-

-

90

64

77384

-

-

78384

-

-

-

125

89

77380

-

-

78380

58380

-

55380

147

105

-

-

-

-

58379

-

55379

160

114

-

-

-

-

58378

-

55378

173

123

-

-

-

-

-

-

55374

200

142

-

-

-

-

-

-

55377

300

214

-

-

-

-

-

-

55375

* See Toroid Winding pg. 19

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Cor
e Data

www.mag-inc.com

105

55206A2

0.250”

0.500”

0.800”

20.3 mm OD

Kool Mµ A

L

 vs. DC Bias

A

L

 (nH/

T  )

2

A·T

70

65

60

55

50

45

40

35

30

25

20

15

10

5

0

0

50

100

150

200

250

300

350

400

450

60µ

40µ

26µ

14µ

75µ

90µ

125µ

Before Finish (nominal)

20.32 mm/0.800 in

12.70 mm/0.500 in

 6.35 mm/0.250 in

After Finish (limits)

21.08 mm/0.830 in

12.07 mm/0.475 in

 7.11 mm/0.280 in

Physical and Magnetic Parameters

Window Area

114 mm

2

Cross Section (Ae)

22.1 mm

2

Path Length (Le)

50.9 mm

Effective Volume (Ve)

1,120 mm

3

Area Product

2,520 mm

4

Surface Area*

Unwound Core

1,200 mm²

40% Winding Factor

1,900 mm²

Winding Turn Length*

Winding Factor

Length/Turn (mm)

0%

23.2

20%

26.3

25%

27.0

30%

27.8

35%

28.6

40%

29.3

45%

30.3

50%

31.2

60%

32.9

70%

35.1

Wound Coil Dimensions*

40% Winding Factor

OD

22.9 mm

HT

10.7 mm

Completely Full Window

Max OD

29.2 mm

Max HT

17.4 mm

Core Dimensions 

OD ID HT

Permeability (µ) 

A

L

 ± 8%

Part Number

Kool Mµ

®

Kool Mµ

® 

MAX Kool Mµ

® 

XF

lux

®

High Flux

Edge

®

MPP

14

7.8

77209

-

-

-

58209

-

55209

19

10

-

79849

-

78849

-

-

-

26

14

77208

79208

76208

78208

58208

59208

55208

40

21

77847

79847

-

78847

-

-

-

60

32

77848

79848

76848

78848

58848

59848

55848

75

41

77211

-

-

78211

-

-

-

90

49

77210

-

-

78210

-

-

-

125

68

77206

-

-

78206

58206

-

55206

147

81

-

-

-

-

58205

-

55205

160

87

-

-

-

-

58204

-

55204

173

96

-

-

-

-

-

-

55200

200

109

-

-

-

-

-

-

55203

300

163

-

-

-

-

-

-

55201

550

320

-

-

-

-

-

-

55202

* See Toroid Winding pg. 19

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Cor

e Data

MAGNETICS

106

0.300”

55310A2

0.550”

0.900”

22.9 mm OD

Before Finish (nominal)

22.86 mm/0.900 in

13.97 mm/0.550 in

 7.62 mm/0.300 in

After Finish (limits)

23.62 mm/0.930 in

13.34 mm/0.525 in

 8.38 mm/0.330 in

Physical and Magnetic Parameters

Window Area

139 mm

2

Cross Section (Ae)

31.7 mm

2

Path Length (Le)

56.7 mm

Effective Volume (Ve)

1,800 mm

3

Area Product

4,430 mm

4

Surface Area*

Unwound Core

1,600 mm

2

40% Winding Factor

2,400 mm

2

Kool Mµ A

L

 vs. DC Bias

A

L

 (nH/

T  )

2

A·T

100

90
80
70
60
50
40
30
20
10

0

0

50

100

150

200

250

300

350

400

450

500

60µ

40µ

26µ

14µ

75µ

90µ

125µ

Winding Turn Length*

Winding Factor

Length/Turn (mm)

0%

27.0

20%

30.5

25%

31.3

30%

32.0

35%

33.1

40%

33.9

45%

34.9

50%

35.9

60%

38.0

70%

40.4

Wound Coil Dimensions*

40% Winding Factor

OD

25.7 mm

HT

12.4 mm

Completely Full Window

Max OD

32.6 mm

Max HT

19.8 mm

Core Dimensions 

OD ID HT

Permeability (µ) 

A

L

 ± 8%

Part Number

Kool Mµ

®

Kool Mµ

® 

MAX Kool Mµ

® 

XF

lux

®

High Flux

Edge

®

MPP

14

9.9

77313

-

-

-

58313

-

55313

19

14

-

79303

-

78303

-

-

-

26

19

77312

79312

76312

78312

58312

59312

55312

40

29

77316

79316

-

78316

-

-

-

60

43

77059

79059

76059

78059

58059

59059

55059

75

54

77315

-

-

78315

-

-

-

90

65

77314

-

-

78314

-

-

-

125

90

77310

-

-

78310

58310

-

55310

147

106

-

-

-

-

58309

-

55309

160

115

-

-

-

-

58308

-

55308

173

124

-

-

-

-

-

-

55304

200

144

-

-

-

-

-

-

55307

300

216

-

-

-

-

-

-

55305

550

396

-

-

-

-

-

-

55306

* See Toroid Winding pg. 19

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Cor
e Data

www.mag-inc.com

107

55350A2

0.350”

0.567”

0.928”

23.6 mm OD

Kool Mµ A

L

 vs. DC Bias

A

L

 (nH/

T  )

2

A·T

110
100

90
80
70
60
50
40
30
20
10

0

0

50

100

150

200

250

300

350

400

450

500

60µ

40µ

26µ

14µ

75µ

90µ

125µ

Before Finish (nominal)

23.57 mm/0.928 in

14.40 mm/0.567 in

 8.89 mm/0.350 in

After Finish (limits)

24.33 mm/0.958 in

13.77 mm/0.542 in

 9.65 mm/0.380 in

Physical and Magnetic Parameters

Window Area

149 mm

2

Cross Section (Ae)

38.8 mm

2

Path Length (Le)

58.8 mm

Effective Volume (Ve)

2,280 mm

3

Area Product

5,770 mm

4

Surface Area*

Unwound Core

1,800 mm

2

40% Winding Factor

2,700 mm

2

Winding Turn Length*

Winding Factor

Length/Turn (mm)

0%

29.8

20%

33.4

25%

34.2

30%

35.0

35%

36.1

40%

36.9

45%

38.0

50%

38.9

60%

41.1

70%

43.6

Wound Coil Dimensions*

40% Winding Factor

OD

26.7 mm

HT

14.2 mm

Completely Full Window

Max OD

33.5 mm

Max HT

21.4 mm

Core Dimensions 

OD ID HT

Permeability (µ) 

A

L

 ± 8%

Part Number

Kool Mµ

®

Kool Mµ

® 

MAX Kool Mµ

® 

XF

lux

®

High Flux

Edge

®

MPP

14

12

77353

-

-

-

58353

-

55353

19

16

-

79357

-

78357

-

-

-

26

22

77352

79352

76352

78352

58352

59352

55352

40

34

77356

79356

-

78356

-

-

-

60

51

77351

79351

76351

78351

58351

59351

55351

75

62

77355

-

-

78355

-

-

-

90

76

77354

-

-

78354

-

-

-

125

105

77350

-

-

78350

58350

-

55350

147

124

-

-

-

-

58349

-

55349

160

135

-

-

-

-

58348

-

55348

173

146

-

-

-

-

-

-

55344

200

169

-

-

-

-

-

-

55347

300

253

-

-

-

-

-

-

55345

* See Toroid Winding pg. 19

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Cor

e Data

MAGNETICS

108

55930A2

0.440”

0.580”

1.060”

26.9 mm OD

Before Finish (nominal)

26.92 mm/1.060 in

14.73 mm/0.580 in

 11.18 mm/0.440 in

After Finish (limits)

27.69 mm/1.090 in

14.10 mm/0.555 in

 11.94 mm/0.470 in

Physical and Magnetic Parameters

Window Area

156 mm

2

Cross Section (Ae)

65.4 mm

2

Path Length (Le)

63.5 mm

Effective Volume (Ve)

4,150 mm

3

Area Product

10,200 mm

4

Surface Area*

Unwound Core

2,400 mm

2

40% Winding Factor

3,500 mm

2

Kool Mµ A

L

 vs. DC Bias

A

L

 (nH/

T  )

2

A·T

160

140

120

100

80

60

40

20

0

0

50

100

150

200

250

300

350

400

450

500

550

60µ

40µ

26µ

14µ

75µ

90µ

125µ

Winding Turn Length*

Winding Factor

Length/Turn (mm)

0%

37.5

20%

41.1

25%

41.9

30%

42.8

35%

43.8

40%

44.6

45%

45.7

50%

46.6

60%

48.8

70%

51.3

Wound Coil Dimensions*

40% Winding Factor

OD

30.0 mm

HT

16.5 mm

Completely Full Window

Max OD

37.3 mm

Max HT

24.0 mm

Core Dimensions 

OD ID HT

Permeability (µ) 

A

L

 ± 8%

Part Number

Kool Mµ

®

Kool Mµ

® 

MAX Kool Mµ

® 

XF

lux

®

High Flux

Edge

®

MPP

14

18

-

79933

-

-

58933

-

55933

19

23

-

79937

-

78937

-

-

-

26

32

77932

79932

76932

78932

58932

59932

55932

40

50

77936

79936

-

78936

-

-

-

60

75

77894

79894

76894

78894

58894

59894

55894

75

94

77935

-

-

78935

-

-

-

90

113

77934

-

-

78934

-

-

-

125

157

77930

-

-

78930

58930

-

55930

147

185

-

-

-

-

58929

-

55929

160

201

-

-

-

-

58928

-

55928

173

217

-

-

-

-

-

-

55924

200

251

-

-

-

-

-

-

55927

300

377

-

-

-

-

-

-

55925

550

740

-

-

-

-

-

-

55926

* See Toroid Winding pg. 19

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Cor
e Data

www.mag-inc.com

109

55548A2

0.420”

0.791”

1.291”

32.8 mm OD

Kool Mµ A

L

 vs. DC Bias

A

L

 (nH/

T  )

2

A·T

130

120

110

100

90

80

70

60

50

40

30

20

10

0

0

50

100

150

200

250

300

350

400

450

500

550

600

650

700

60µ

40µ

26µ

14µ

75µ

90µ

125µ

Before Finish (nominal)

32.79 mm/1.291 in

20.09 mm/0.791 in

 10.67 mm/0.420 in

After Finish (limits)

33.66 mm/1.325 in

19.46 mm/0.766 in

 11.43 mm/0.450 in

Physical and Magnetic Parameters

Window Area

297 mm

2

Cross Section (Ae)

65.6 mm

2

Path Length (Le)

81.4 mm

Effective Volume (Ve)

5,340 mm

3

Area Product

19,500 mm

4

Surface Area*

Unwound Core

3,100 mm

2

40% Winding Factor

4,900 mm

2

Winding Turn Length*

Winding Factor

Length/Turn (mm)

0%

37.1

20%

42.1

25%

43.2

30%

44.4

35%

45.9

40%

46.9

45%

48.5

50%

50.0

60%

52.8

70%

56.3

Wound Coil Dimensions*

40% Winding Factor

OD

36.8 mm

HT

17.8 mm

Completely Full Window

Max OD

46.7 mm

Max HT

28.0 mm

Core Dimensions 

OD ID HT

Permeability (µ) 

A

L

 ± 8%

Part Number

Kool Mµ

®

Kool Mµ

® 

MAX Kool Mµ

® 

XF

lux

®

High Flux

Edge

®

MPP

14

14

77551

79551

-

-

58551

-

55551

19

20

-

79554

-

78554

-

-

-

26

28

77550

79550

76550

78550

58550

59550

55550

40

41

77555

79555

-

78555

-

-

-

60

61

77071

79071

76071

78071

58071

59071

55071

75

76

77553

-

-

78553

-

-

-

90

91

77552

-

-

78552

-

-

-

125

127

77548

-

-

78548

58548

-

55548

147

150

-

-

-

-

58547

-

55547

160

163

-

-

-

-

58546

-

55546

173

176

-

-

-

-

-

-

55542

200

203

-

-

-

-

-

-

55545

300

305

-

-

-

-

-

-

55543

550

559

-

-

-

-

-

-

55544

* See Toroid Winding pg. 19

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Cor

e Data

MAGNETICS

110

55585A2

0.350”

0.920”

1.350”

34.3 mm OD

Before Finish (nominal)

34.29 mm/1.350 in

23.37 mm/0.920 in

 8.89 mm/0.350 in

After Finish (limits)

35.18 mm/1.385 in

22.56 mm/0.888 in

 9.78 mm/0.385 in

Physical and Magnetic Parameters

Window Area

399 mm

2

Cross Section (Ae)

46.4 mm

2

Path Length (Le)

89.5 mm

Effective Volume (Ve)

4,150 mm

3

Area Product

18,500 mm

4

Surface Area*

Unwound Core

2,900 mm

2

40% Winding Factor

5,500 mm

2

Kool Mµ A

L

 vs. DC Bias

A

L

 (nH/

T  )

2

A·T

80

70

60

50

40

30

20

10

0

0

50

100

150

200

250

300

350

400

450

500

550

600

650

700

60µ

40µ

26µ

14µ

75µ

90µ

125µ

Winding Turn Length*

Winding Factor

Length/Turn (mm)

0%

32.2

20%

38.1

25%

39.6

30%

40.6

35%

42.5

40%

44.0

45%

45.6

50%

47.3

60%

50.8

70%

54.9

Wound Coil Dimensions*

40% Winding Factor

OD

40.5 mm

HT

16.8 mm

Completely Full Window

Max OD

50.1 mm

Max HT

29.0 mm

Core Dimensions 

OD ID HT

Permeability (µ) 

A

L

 ± 8%

Part Number

Kool Mµ

®

Kool Mµ

® 

MAX Kool Mµ

® 

XF

lux

®

High Flux

Edge

®

MPP

14

9

77588

79588

-

-

58588

-

55588

19

12

-

79592

-

78592

-

-

-

26

16

77587

79587

76587

78587

58587

59587

55587

40

25

77591

79591

-

78591

-

-

-

60

38

77586

79586

76586

78586

58586

59586

55586

75

47

77590

-

-

78590

-

-

-

90

57

77589

-

-

78589

-

-

-

125

79

77585

-

-

78585

58585

-

55585

147

93

-

-

-

-

58584

-

55584

160

101

-

-

-

-

58583

-

55583

173

109

-

-

-

-

-

-

55579

200

126

-

-

-

-

-

-

55582

300

190

-

-

-

-

-

-

55580

550

348

-

-

-

-

-

-

55581

* See Toroid Winding pg. 19

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Cor
e Data

www.mag-inc.com

111

55324A2

0.412”

0.880”

1.410”

35.8 mm OD

Kool Mµ A

L

 vs. DC Bias

A

L

 (nH/

T  )

2

A·T

120
110
100

90
80
70
60
50
40
30
20
10

0

0

50

100

150

200

250

300

350

400

450

500

550

600

650

700

750

800

60µ

40µ

26µ

14µ

75µ

90µ

125µ

Before Finish (nominal)

35.81 mm/1.410 in

22.35 mm/0.880 in

 10.46 mm/0.412 in

After Finish (limits)

36.70 mm/1.445 in

21.54 mm/0.848 in

 11.35 mm/0.447 in

Physical and Magnetic Parameters

Window Area

364 mm

2

Cross Section (Ae)

67.8 mm

2

Path Length (Le)

89.8 mm

Effective Volume (Ve)

6,090 mm

3

Area Product

24,700 mm

4

Surface Area*

Unwound Core

3,400 mm

2

40% Winding Factor

5,700 mm

2

Winding Turn Length*

Winding Factor

Length/Turn (mm)

0%

37.9

20%

43.5

25%

44.8

30%

46.0

35%

47.6

40%

48.9

45%

50.6

50%

52.0

60%

55.5

70%

59.3

Wound Coil Dimensions*

40% Winding Factor

OD

40.2 mm

HT

18.4 mm

Completely Full Window

Max OD

51.1 mm

Max HT

29.6 mm

Core Dimensions 

OD ID HT

Permeability (µ) 

A

L

 ± 8%

Part Number

Kool Mµ

®

Kool Mµ

® 

MAX Kool Mµ

® 

XF

lux

®

High Flux

Edge

®

MPP

14

13

77327

79327

-

-

58327

-

55327

19

18

-

79317

-

78317

-

-

-

26

24

77326

79326

76326

78326

58326

59326

55326

40

37

77330

79330

-

78330

-

-

-

60

56

77076

79076

76076

78076

58076

59076

55076

75

70

77329

-

-

78329

-

-

-

90

84

77328

-

-

78328

-

-

-

125

117

77324

-

-

78324

58324

-

55324

147

138

-

-

-

-

58323

-

55323

160

150

-

-

-

-

58322

-

55322

173

162

-

-

-

-

-

-

55318

200

187

-

-

-

-

-

-

55321

300

281

-

-

-

-

-

-

55319

550

515

-

-

-

-

-

-

55320

* See Toroid Winding pg. 19

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Cor

e Data

MAGNETICS

112

55254A2

0.570”

0.950”

1.570”

39.9 mm OD

Before Finish (nominal)

39.88 mm/1.570 in

24.13 mm/0.950 in

 14.48 mm/0.570 in

After Finish (limits)

40.77 mm/1.605 in

23.32 mm/0.918 in

 15.37 mm/0.605 in

Physical and Magnetic Parameters

Window Area

427 mm

2

Cross Section (Ae)

107 mm

2

Path Length (Le)

98.4 mm

Effective Volume (Ve)

10,600 mm

3

Area Product

45,800 mm

4

Surface Area*

Unwound Core

4,800 mm

2

40% Winding Factor

7,300 mm

2

Kool Mµ A

L

 vs. DC Bias

A

L

 (nH/

T  )

2

A·T

180
160
140
120
100

80
60
40
20

0

0

50

100

150

200

250

300

350

400

450

500

550

600

650

700

750

800

60µ

40µ

26µ

14µ

75µ

90µ

125µ

Winding Turn Length*

Winding Factor

Length/Turn (mm)

0%

48.2

20%

54.3

25%

55.8

30%

57.0

35%

58.8

40%

60.2

45%

62.1

50%

63.7

60%

67.3

70%

71.5

Wound Coil Dimensions*

40% Winding Factor

OD

44.3 mm

HT

22.4 mm

Completely Full Window

Max OD

56.4 mm

Max HT

35.2 mm

Core Dimensions 

OD ID HT

Permeability (µ) 

A

L

 ± 8%

Part Number

Kool Mµ

®

Kool Mµ

® 

MAX

Kool Mµ

® 

XF

lux

®

High Flux

Edge

®

MPP

14

19

77257

79257

-

-

58257

-

55257

19

26

-

79262

-

78262

-

-

-

26

35

77256

79256

76256

78256

58256

59256

55256

40

54

77260

79260

-

78260

-

-

-

60

81

77083

79083

76083

78083

58083

59083

55083

75

101

77259

-

-

78259

-

-

-

90

121

77258

-

-

78258

-

-

-

125

168

77254

-

-

78254

58254

-

55254

147

198

-

-

-

-

58253

-

55253

160

215

-

-

-

-

58252

-

55252

173

233

-

-

-

-

-

-

55248

200

269

-

-

-

-

-

-

55251

300

403

-

-

-

-

-

-

55249

550

740

-

-

-

-

-

-

55250

* See Toroid Winding pg. 19

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Cor
e Data

www.mag-inc.com

113

55454A2

0.640”

0.953”

1.689”

42.9 mm OD

Kool Mµ A

L

 vs. DC Bias

A

L

 (nH/

T  )

2

A·T

225
200
175
150
125
100

75
50
25

0

0

100

200

300

400

500

600

700

800

900

60µ

40µ

26µ

14µ

75µ

90µ

125µ

Before Finish (nominal)

42.90 mm/1.689 in

24.21 mm/0.953 in

 16.26 mm/0.640 in

After Finish (limits)

43.84 mm/1.726 in

23.39 mm/0.921 in

 17.27 mm/0.680 in

Physical and Magnetic Parameters

Window Area

430 mm

2

Cross Section (Ae)

147.5 mm

2

Path Length (Le)

102 mm

Effective Volume (Ve)

15,100 mm

3

Area Product

63,400 mm

4

Surface Area*

Unwound Core

5,800 mm

2

40% Winding Factor

8,400 mm

2

Winding Turn Length*

Winding Factor

Length/Turn (mm)

0%

55.0

20%

61.1

25%

62.5

30%

63.8

35%

65.6

40%

67.1

45%

68.9

50%

70.8

60%

74.2

70%

78.5

Wound Coil Dimensions*

40% Winding Factor

OD

47.6 mm

HT

24.6 mm

Completely Full Window

Max OD

59.4 mm

Max HT

36.7 mm

Core Dimensions 

OD ID HT

Permeability (µ) 

A

L

 ± 8%

Part Number

Kool Mµ

®

Kool Mµ

® 

MAX Kool Mµ

® 

XF

lux

®

High Flux

Edge

®

MPP

14

25

77446

79446

-

-

58446

-

55446

19

35

-

79447

-

78447

-

-

-

26

47

77448

79448

-

78448

58448

-

55448

40

72

77450

79450

-

78450

-

-

-

60

108

77451

79451

-

78451

58451

-

55451

75

135

77452

-

-

78452

-

-

-

90

161

77453

-

-

78453

-

-

-

125

224

77454

-

-

78454

58454

-

55454

147

264

-

-

-

-

58455

-

55455

160

287

-

-

-

-

58456

-

55456

173

310

-

-

-

-

-

-

55457

200

359

-

-

-

-

-

-

55458

300

538

-

-

-

-

-

-

55459

* See Toroid Winding pg. 19

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Cor

e Data

MAGNETICS

114

0.600”

55089A2

1.130”

1.840”

46.7 mm OD

Before Finish (nominal)

46.74 mm/1.840 in

28.70 mm/1.130 in

 15.24 mm/0.600 in

After Finish (limits)

47.63 mm/1.875 in

27.89 mm/1.098 in

 16.13 mm/0.635 in

Physical and Magnetic Parameters

Window Area

610 mm

2

Cross Section (Ae)

134 mm

2

Path Length (Le)

116 mm

Effective Volume (Ve)

15,600 mm

3

Area Product

81,800 mm

4

Surface Area*

Unwound Core

6,100 mm

2

40% Winding Factor

9,800 mm

2

Kool Mµ A

L

 vs. DC Bias

A

L

 (nH/

T  )

2

A·T

180
160
140
120
100

80
60
40
20

0

0

100

200

300

400

500

600

700

800

900

1,000

60µ

40µ

26µ

14µ

75µ

90µ

125µ

Winding Turn Length*

Winding Factor

Length/Turn (mm)

0%

52.0

20%

59.1

25%

61.0

30%

62.2

35%

64.5

40%

66.4

45%

68.2

50%

70.4

60%

74.7

70%

79.5

Wound Coil Dimensions*

40% Winding Factor

OD

52.0 mm

HT

24.9 mm

Completely Full Window

Max OD

66.3 mm

Max HT

39.8 mm

Core Dimensions 

OD ID HT

Permeability (µ) 

A

L

 ± 8%

Part Number

Kool Mµ

®

Kool Mµ

® 

MAX Kool Mµ

® 

XF

lux

®

High Flux

Edge

®

MPP

14

20

77092

79092

-

-

58092

-

55092

19

27

-

79079

-

78079

-

-

-

26

37

77091

79091

-

78091

58091 

-

55091

40

57

77095

79095

-

78095

-

-

-

60

86

77090

79090

-

78090

58090

-

55090

75

107

77094

-

-

78094

-

-

-

90

128

77093

-

-

78093

-

-

-

125

178

77089

-

-

78089

58089

-

55089

147

210

-

-

-

-

58088

-

55088

160

228

-

-

-

-

-

-

55087

173

246

-

-

-

-

-

-

55082

200

285

-

-

-

-

-

-

55086

300

427

-

-

-

-

-

-

55084

* See Toroid Winding pg. 19

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Cor
e Data

www.mag-inc.com

115

55438A2

0.710”

0.950”

1.840”

46.7 mm OD

Kool Mµ A

L

 vs. DC Bias

A

L

 (nH/

T  )

2

A·T

300
270
240
210
180
150
120

90
60
30

0

0

100

200

300

400

500

600

700

800

900

1,000

60µ

40µ

26µ

14µ

75µ

90µ

125µ

Before Finish (nominal)

46.74 mm/1.840 in

24.13 mm/0.950 in

 18.03 mm/0.710 in

After Finish (limits)

47.63 mm/1.875 in

23.32 mm/0.918 in

 18.92 mm/0.745 in

Physical and Magnetic Parameters

Window Area

427 mm

2

Cross Section (Ae)

199 mm

2

Path Length (Le)

107 mm

Effective Volume (Ve)

21,300 mm

3

Area Product

85,900 mm

4

Surface Area*

Unwound Core

6,900 mm

2

40% Winding Factor

9,600 mm

2

Winding Turn Length*

Winding Factor

Length/Turn (mm)

0%

62.1

20%

68.2

25%

69.7

30%

70.9

35%

72.7

40%

74.1

45%

76.0

50%

77.6

60%

81.2

70%

85.4

Wound Coil Dimensions*

40% Winding Factor

OD

51.2 mm

HT

26.0 mm

Completely Full Window

Max OD

63.8 mm

Max HT

38.7 mm

Core Dimensions 

OD ID HT

Permeability (µ) 

A

L

 ± 8%

Part Number

Kool Mµ

®

Kool Mµ

® 

MAX Kool Mµ

® 

XF

lux

®

High Flux

Edge

®

MPP

14

32

77441

79441

-

-

58441

-

55441

19

43

-

79430

-

78430

-

-

-

26

59

77440

79440

-

78440

58440

-

55440

40

90

77431

79431

-

78431

-

-

-

60

135

77439

79439

-

78439

58439

-

55439

75

169

77443

-

-

78443

-

-

-

90

202

77442

-

-

78442

-

-

-

125

281

77438

-

-

78438

58438

-

55438

147

330

-

-

-

-

58437

-

55437

160

360

-

-

-

-

-

-

55436

173

390

-

-

-

-

-

-

55432

200

450

-

-

-

-

-

-

55435

300

674

-

-

-

-

-

-

55433

* See Toroid Winding pg. 19

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Cor

e Data

MAGNETICS

116

55725A2

0.820”

0.975”

1.990”

50.6 mm OD

Kool Mµ A

L

 vs. DC Bias

A

L

 (nH/

T  )

2

A·T

400
360
320
280
240
200
160
120

80
40

0

0

100

200

300

400

500

600

700

800

900

1,000

60µ

40µ

26µ

14µ

75µ

90µ

125µ

Before Finish (nominal)

50.55 mm/1.990 in

24.77 mm/0.975 in

 20.83 mm/0.820 in

After Finish (limits)

51.51 mm/2.028 in

24.00 mm/0.945 in

 21.59 mm/0.850 in

Physical and Magnetic Parameters

Window Area

452 mm

2

Cross Section (Ae)

262 mm

2

Path Length (Le)

113.5 mm

Effective Volume (Ve)

29,700 mm

3

Area Product

118,000 mm

4

Surface Area*

Unwound Core

8,300 mm

2

40% Winding Factor

11,500 mm

2

Winding Turn Length*

Winding Factor

Length/Turn (mm)

0%

70.7

20%

76.9

25%

78.3

30%

79.7

35%

81.5

40%

82.8

45%

84.8

50%

86.6

60%

90.1

70%

94.4

Wound Coil Dimensions*

40% Winding Factor

OD

55.0 mm

HT

29.0 mm

Completely Full Window

Max OD

68.0 mm

Max HT

41.0 mm

Core Dimensions 

OD ID HT

Permeability (µ) 

A

L

 ± 8%

Part Number

Kool Mµ

®

Kool Mµ

® 

MAX Kool Mµ

® 

XF

lux

®

High Flux

Edge

®

MPP

14

41

77728

79728

-

58728

55728

19

56

-

79750

78750

-

-

26

76

77727

79727

78727

58727

55727

40

117

77733

79733

78733

-

-

60

175

77726

79726

78726

58726

55726

75

219

77729

-

78729

-

-

90

263

77730

-

78730

-

-

125

366

77725

-

78725

58725

55725

* See Toroid Winding pg. 19

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Cor
e Data

www.mag-inc.com

117

55715A2

50.8 mm OD

0.530”

1.250”

2.000”

Kool Mµ A

L

 vs. DC Bias

A

L

 (nH/

T  )

2

A·T

160

140

120

100

80

60

40

20

0

0

100

200

300

400

500

600

700

800

900

1,000

60µ

40µ

26µ

14µ

75µ

90µ

125µ

Before Finish (nominal)

50.80 mm/2.000 in

31.75 mm/1.250 in

 13.46 mm/0.530 in

After Finish (limits)

51.69 mm/2.035 in

30.94 mm/1.218 in

 14.35 mm/0.565 in

Physical and Magnetic Parameters

Window Area

751 mm

2

Cross Section (Ae)

125 mm

2

Path Length (Le)

127 mm

Effective Volume (Ve)

15,900 mm

3

Area Product

94,000 mm

4

Surface Area*

Unwound Core

6,400 mm

2

40% Winding Factor

11,000 mm

2

Winding Turn Length*

Winding Factor

Length/Turn (mm)

0%

49.5

20%

57.4

25%

59.6

30%

61.0

35%

63.5

40%

65.5

45%

67.7

50%

70.1

60%

74.9

70%

80.3

Wound Coil Dimensions*

40% Winding Factor

OD

56.6 mm

HT

24.2 mm

Completely Full Window

Max OD

72.4 mm

Max HT

40.6 mm

Core Dimensions 

OD ID HT

Permeability (µ) 

A

L

 ± 8%

Part Number

Kool Mµ

®

Kool Mµ

® 

MAX Kool Mµ

® 

XF

lux

®

High Flux

Edge

®

MPP

14

17

77718

79718

-

-

58718

-

55718

19

23

-

79708

-

78708

-

26

32

77717

79717

-

78717

58717

-

55717

40

49

77721

79721

-

78721

-

-

-

60

73

77716

79716

-

78716

58716

-

55716

75

91

77720

-

-

78720

-

-

-

90

109

77719

-

-

78719

-

-

-

125

152

77715

-

-

78715

58715

-

55715

147

179

-

-

-

-

58714

-

55714

160

195

-

-

-

-

-

-

55713

173

210

-

-

-

-

-

-

55709

200

243

-

-

-

-

-

-

55712

300

365

-

-

-

-

-

-

55710

* See Toroid Winding pg. 19

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Cor

e Data

MAGNETICS

118

55109A2

57.2 mm OD

0.550”

1.400”

2.250”

Kool Mµ A

L

 vs. DC Bias

A

L

 (nH/

T  )

2

A·T

160

140

120

100

80

60

40

20

0

0

100

200

300

400

500

600

700

800

900

1,000

1,100

1,200

60µ

40µ

26µ

14µ

75µ

90µ

125µ

Before Finish (nominal)

57.15 mm/2.250 in

35.56 mm/1.400 in

 13.97 mm/0.550 in

After Finish (limits)

58.04 mm/2.285 in

34.75 mm/1.368 in

 14.86 mm/0.585 in

Physical and Magnetic Parameters

Window Area

948 mm

2

Cross Section (Ae)

144 mm

2

Path Length (Le)

143 mm

Effective Volume (Ve)

20,700 mm

3

Area Product

137,000 mm

4

Surface Area*

Unwound Core

7,700 mm

2

40% Winding Factor

13,000 mm

2

Winding Turn Length*

Winding Factor

Length/Turn (mm)

0%

53.0

20%

61.9

25%

64.3

30%

65.8

35%

68.7

40%

71.0

45%

73.2

50%

76.0

60%

81.3

70%

87.1

Wound Coil Dimensions*

40% Winding Factor

OD

63.5 mm

HT

25.9 mm

Completely Full Window

Max OD

81.3 mm

Max HT

44.4 mm

Core Dimensions 

OD ID HT

Permeability (µ) 

A

L

 ± 8%

Part Number

Kool Mµ

®

Kool Mµ

® 

MAX Kool Mµ

® 

XF

lux

®

High Flux

Edge

®

MPP

14

18

77112

79112

-

-

58112

-

55112

19

24

79215

-

78215

-

26

33

77111

79111

-

78111

58111

-

55111

40

50

77212

79212

-

78212

-

-

-

60

75

77110

79110

-

78110

58110

-

55110

75

94

77214

-

-

78214

-

-

-

90

112

77213

-

-

78213

-

-

-

125

156

77109

-

-

-

58109

-

55109

147

185

-

-

-

-

-

-

55108

160

200

-

-

-

-

-

-

55107

173

218

-

-

-

-

-

-

55103

200

250

-

-

-

-

-

-

55106

300

374

-

-

-

-

-

-

55104

* See Toroid Winding pg. 19

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Cor
e Data

www.mag-inc.com

119

57.2 mm OD

55195A2

0.600”

1.039”

2.250”

Before Finish (nominal)

57.15 mm/2.250 in

26.39 mm/1.039 in

 15.24 mm/0.600 in

After Finish (limits)

58.04 mm/2.285 in

25.58 mm/1.007 in

 16.13 mm/0.635 in

Physical and Magnetic Parameters

Window Area

514 mm

2

Cross Section (Ae)

229 mm

2

Path Length (Le)

125 mm

Effective Volume (Ve)

28,600 mm

3

Area Product

118,000 mm

4

Surface Area*

Unwound Core

8,500 mm

2

40% Winding Factor

12,000 mm

2

Kool Mµ A

L

 vs. DC Bias

A

L

 (nH/

T  )

2

A·T

300
270
240
210
180
150
120

90
60
30

0

0

100

200

300

400

500

600

700

800

900

1,000

60µ

40µ

26µ

14µ

75µ

90µ

125µ

Winding Turn Length*

Winding Factor

Length/Turn (mm)

0%

64.6

20%

71.2

25%

72.9

30%

74.1

35%

76.3

40%

77.8

45%

79.8

50%

81.6

60%

85.6

70%

90.1

Wound Coil Dimensions*

40% Winding Factor

OD

62.0 mm

HT

24.0 mm

Completely Full Window

Max OD

75.7 mm

Max HT

34.0 mm

Core Dimensions 

OD ID HT

Permeability (µ) 

A

L

 ± 8%

Part Number

Kool Mµ

®

Kool Mµ

® 

MAX Kool Mµ

® 

XF

lux

®

High Flux

Edge

®

MPP

14

32

77190

79190

-

-

58190

-

55190

19

44

-

79188

-

78188

-

-

26

60

77191

79191

-

78191

58191

-

55191

40

92

77189

79189

-

78189

-

-

-

60

138

77192

79192

-

78192

58192

-

55192

75

172

77193

-

-

78193

-

-

-

90

207

77194

-

-

78194

-

-

-

125

287

77195

-

-

78195

58195

-

55195

147

306

-

-

-

-

-

-

55196

160

333

-

-

-

-

-

-

55197

173

360

-

-

-

-

-

-

55198

200

417

-

-

-

-

-

-

55199

* See Toroid Winding pg. 19

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Cor

e Data

MAGNETICS

120

55620A2

0.984”

1.283”

2.440”

62.0 mm OD

Before Finish (nominal)

61.98 mm/2.440 in

32.59 mm/1.283 in

 24.99 mm/0.984 in

After Finish (limits)

63.09 mm/2.484 in

31.70 mm/1.248 in

 25.91 mm/1.020 in

Physical and Magnetic Parameters

Window Area

789 mm

2

Cross Section (Ae)

360 mm

2

Path Length (Le)

144 mm

Effective Volume (Ve)

51,800 mm

3

Area Product

284,000 mm

4

Surface Area*

Unwound Core

12,000 mm

2

40% Winding Factor

21,000 mm

2

Winding Turn Length*

Winding Factor

Length/Turn (mm)

0%

83.0

20%

91.3

25%

93.4

30%

94.9

35%

97.5

40%

99.5

45%

102

50%

104

60%

109

70%

115

Kool Mµ A

L

 vs. DC Bias

A

L

 (nH/

T  )

2

A·T

400
360
320
280
240
200
160
120

80
40

0

0

100

200

300

400

500

600

700

800

900

1,000

1,100

1,200

60µ

40µ

26µ

14µ

75µ

90µ

125µ

Wound Coil Dimensions*

40% Winding Factor

OD

75.3 mm

HT

39.7 mm

Completely Full Window

Max OD

81.4 mm

Max HT

47.4 mm

Core Dimensions 

OD ID HT

Permeability (µ) 

A

L

 ± 8%

Part Number

Kool Mµ

®

Kool Mµ

® 

MAX Kool Mµ

® 

XF

lux

®

High Flux

Edge

®

MPP

14

44

77614

79614

-

-

58614

-

55614

19

60

-

79612

-

78612

-

-

-

26

82

77615

79615

-

78615

58615

-

55615

40

126

77616

79616

-

78616

58616

-

-

60

189

77617

79617

-

78617

58617

-

55617

75

237

77618

-

-

78618

-

-

-

90

284

77619

-

-

78619

-

-

-

125

394

77620

-

-

-

58620

-

55620

* See Toroid Winding pg. 19

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Cor
e Data

www.mag-inc.com

121

55070A2

0.787”

1.417”

2.677”

68.0 mm OD

Kool Mµ A

L

 vs. DC Bias

A

L

 (nH/

T  )

2

A·T

330
300
270
240
210
180
150
120

90
60
30

0

0

100

200

300

400

500

600

700

800

900

1,000

1,100

1,200

60µ

40µ

26µ

14µ

75µ

90µ

125µ

Before Finish (nominal)

68.00 mm/2.677 in

35.99 mm/1.417 in

 19.99 mm/0.787 in

After Finish (limits)

69.42 mm/2.733 in

34.67 mm/1.365 in

 21.41 mm/0.843 in

Physical and Magnetic Parameters

Window Area

945 mm

2

Cross Section (Ae)

314 mm

2

Path Length (Le)

158 mm

Effective Volume (Ve)

49,700 mm

3

Area Product

297,000 mm

4

Surface Area*

Unwound Core

12,700 mm

2

40% Winding Factor

19,000 mm

2

Winding Turn Length*

Winding Factor

Length/Turn (mm)

0%

77.6

20%

86.6

25%

88.6

30%

90.7

35%

93.2

40%

95.1

45%

98.0

50%

101

60%

106

70%

112

Wound Coil Dimensions*

40% Winding Factor

OD

74.7 mm

HT

32.4 mm

Completely Full Window

Max OD

92.7 mm

Max HT

50.6 mm

Core Dimensions 

OD ID HT

Permeability (µ) 

A

L

 ± 8%

Part Number

Kool Mµ

®

Kool Mµ

® 

MAX Kool Mµ

® 

XF

lux

®

High Flux

Edge

®

MPP

14

35

77075

79075

-

-

58075

-

55075

19

48

-

79067

-

78067

-

26

65

77074

79074

-

78074

58074

-

55074

40

100

77073

79073

-

78073

58073

-

-

60

143

77072

79072

-

78072

58072

-

55072

75

187

77069

-

-

78069

-

-

-

90

225

77068

-

-

78068

-

-

-

125

312

77070

-

-

-

58070

-

55070

* See Toroid Winding pg. 19

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Cor

e Data

MAGNETICS

122

55740A2

1.378”

1.783”

2.917”

74.1 mm OD

Kool Mµ A

L

 vs. DC Bias

A

L

 (nH/

T  )

2

A·T

440
400
360
320
280
240
200
160
120

80
40

0

0

200

400

600

800

1,000

1,200

1,400

1,600

60µ

40µ

26µ

14µ

75µ

90µ

125µ

Before Finish (nominal)

74.09 mm/2.917 in

45.29 mm/1.783 in

 35.00 mm/1.378 in

After Finish (limits)

75.21 mm/2.961 in

44.40 mm/1.748 in

 35.92 mm/1.414 in

Physical and Magnetic Parameters

Window Area

1,550 mm

2

Cross Section (Ae)

497 mm

2

Path Length (Le)

184 mm

Effective Volume (Ve)

91,400 mm

3

Area Product

769,000 mm

4

Surface Area*

Unwound Core

19,000 mm

2

40% Winding Factor

33,000 mm

2

Winding Turn Length*

Winding Factor

Length/Turn (mm)

0%

102

20%

114

25%

117

30%

119

35%

122

40%

125

45%

129

50%

132

60%

139

70%

147

Wound Coil Dimensions*

40% Winding Factor

OD

91.0 mm

HT

55.2 mm

Completely Full Window

Max OD

102 mm

Max HT

65.7 mm

Core Dimensions 

OD ID HT

Permeability (µ) 

A

L

 ± 8%

Part Number

Kool Mµ

®

Kool Mµ

® 

MAX Kool Mµ

® 

XF

lux

®

High Flux

Edge

®

MPP

14

48

77734

79734

-

-

58734

-

55734

19

64

-

79744

-

78744

-

26

88

77735

79735

-

78735

58735

-

55735

40

136

77736

79736

-

78736

58736

-

-

60

204

77737

79737

-

78737

58737

-

55737

75

255

77738

-

-

78738

-

-

-

90

306

77739

-

-

78739

-

-

-

125

425

77740

-

-

-

58740

-

55740

* See Toroid Winding pg. 19

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Cor
e Data

www.mag-inc.com

123

0.500”

1.938”

3.063”

77.8 mm OD

Kool Mµ A

L

 vs. DC Bias

A

L

 (nH/

T  )

2

A·T

150
135
120
105

90
75
60
45
30
15

0

0

200

400

600

800

1,000

1,200

1,400

1,600

60µ

40µ

26µ

14µ

75µ

90µ

125µ

Before Finish (nominal)

77.80 mm/3.063 in

49.23 mm/1.938 in

 12.70 mm/0.500 in

After Finish (limits)

78.94 mm/3.108 in

48.21 mm/1.898 in

 13.84 mm/0.545 in

55866A2

Physical and Magnetic Parameters

Window Area

1,820 mm

2

Cross Section (Ae)

176 mm

2

Path Length (Le)

196 mm

Effective Volume (Ve)

34,500 mm

3

Area Product

321,000 mm

4

Surface Area*

Unwound Core

11,000 mm

2

40% Winding Factor

23,000 mm

2

Winding Turn Length*

Winding Factor

Length/Turn (mm)

0%

58.4

20%

70.9

25%

74.1

30%

76.3

35%

80.4

40%

83.5

45%

86.7

50%

90.4

60%

98.1

70%

107

Wound Coil Dimensions*

40% Winding Factor

OD

86.6 mm

HT

29.1 mm

Completely Full Window

Max OD

112 mm

Max HT

54.3 mm

Core Dimensions 

OD ID HT

Permeability (µ) 

A

L

 ± 8%

Part Number

Kool Mµ

®

Kool Mµ

® 

MAX Kool Mµ

® 

XF

lux

®

High Flux

Edge

®

MPP

14

16

77869

79869

-

-

58869

-

55869

19

22

-

79873

-

78873

-

-

26

30

77868

79868

-

78868

58868

-

55868

40

45

77872

79872

-

78872

-

-

-

60

68

77867

79867

-

78867

58867

-

55867

75

85

77871

-

-

78871

-

-

-

90

102

77870

-

-

78870

-

-

-

125

142

77866

-

-

-

58866

-

55866

* See Toroid Winding pg. 19

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Cor

e Data

MAGNETICS

124

0.625”

55906A2

1.938”

3.063”

77.8 mm OD

Before Finish (nominal)

77.80 mm/3.063 in

49.23 mm/1.938 in

 15.88 mm/0.625 in

After Finish (limits)

78.94 mm/3.108 in

48.21 mm/1.898 in

 17.02 mm/0.670 in

Physical and Magnetic Parameters

Window Area

1,820 mm

2

Cross Section (Ae)

221 mm

2

Path Length (Le)

196 mm

Effective Volume (Ve)

43,400 mm

3

Area Product

403,000 mm

4

Surface Area*

Unwound Core

13,000 mm

2

40% Winding Factor

24,000 mm

2

Winding Turn Length*

Winding Factor

Length/Turn (mm)

0%

64.8

20%

77.3

25%

80.1

30%

83.1

35%

86.5

40%

89.2

45%

93.2

50%

97.0

60%

104

70%

113

Kool Mµ A

L

 vs. DC Bias

A

L

 (nH/

T  )

2

A·T

180
160
140
120
100

80
60
40
20

0

0

200

400

600

800

1,000

1,200

1,400

1,600

60µ

40µ

26µ

14µ

75µ

90µ

125µ

Wound Coil Dimensions*

40% Winding Factor

OD

86.6 mm

HT

32.3 mm

Completely Full Window

Max OD

113 mm

Max HT

57.7 mm

Core Dimensions 

OD ID HT

Permeability (µ) 

A

L

 ± 8%

Part Number

Kool Mµ

®

Kool Mµ

® 

MAX Kool Mµ

® 

XF

lux

®

High Flux

Edge

®

MPP

14

20

77909

79909

-

-

58909

-

55909

19

27

-

79913

-

78913

-

26

37

77908

79908

-

78908

58908

-

55908

40

57

77912

79912

-

78912

-

-

-

60

85

77907

79907

-

78907

58907

-

55907

75

106

77911

-

-

78911

-

-

-

90

128

77910

-

-

78910

-

-

-

125

177

77906

-

-

-

58906

-

55906

* See Toroid Winding pg. 19

Magnetics-Powder-Core-Catalog-2020-html.html
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Cor
e Data

www.mag-inc.com

125

55778A2 

1.018”

1.549”

3.063”

77.8 mm OD

Before Finish (nominal)

77.80 mm/3.063 in

39.34 mm/1.549 in

 25.86 mm/1.018 in

After Finish (limits)

78.94 mm/3.108 in

38.33 mm/1.509 in

 26.85 mm/1.057 in

Physical and Magnetic Parameters

Window Area

1,150 mm

2

Cross Section (Ae)

492 mm

2

Path Length (Le)

177.2 mm

Effective Volume (Ve)

81,500 mm

3

Area Product

550,000 mm

4

Surface Area*

Unwound Core

17,000 mm

2

40% Winding Factor

25,000 mm

2

Winding Turn Length*

Winding Factor

Length/Turn (mm)

0%

94.3

20%

104

25%

107

30%

109

35%

112

40%

114

45%

117

50%

120

60%

126

70%

132

Wound Coil Dimensions*

40% Winding Factor

OD

84.6 mm

HT

38.9 mm

Completely Full Window

Max OD

105 mm

Max HT

58.9 mm

Kool Mµ A

L

 vs. DC Bias

A

L

 (nH/

T  )

2

A·T

440
400
360
320
280
240
200
160
120

80
40

0

0

200

400

600

800

1,000

1,200

1,400

60µ

40µ

26µ

14µ

75µ

125µ

Core Dimensions 

OD ID HT

Permeability (µ) 

A

L

 ± 8%

Part Number

Kool Mµ

®

Kool Mµ

® 

MAX Kool Mµ

® 

XF

lux

®

High Flux

Edge

®

MPP

14

47

77774

79774

-

-

58774

-

55774

19

64

-

79772

-

78772

-

26

88

77775

79775

-

78775

58775

-

55775

40

135

77776

79776

-

78776

58776

-

-

60

205

77777

79777

-

78777

58777

-

55777

75

256

77773

-

-

78773

-

125

425

77778

-

-

-

58778

-

55778

* See Toroid Winding pg. 19

Magnetics-Powder-Core-Catalog-2020-html.html
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Cor

e Data

MAGNETICS

126

55102A2

0.650”

2.250”

4.000”

101.6 mm OD

Kool Mµ A

L

 vs. DC Bias

A

L

 (nH/

T  )

2

A·T

240
220
200
180
160
140
120
100

80
60
40
20

0

0

200

400

600

800

1,000

1,200

1,400

1,600

1,800

2,000

60µ

40µ

26µ

14µ

75µ

90µ

125µ

Before Finish (nominal)

101.60 mm/4.000 in

57.15 mm/2.250 in

 16.51 mm/0.650 in

After Finish (limits)

103.00 mm/4.055 in

55.75 mm/2.195 in

 17.91 mm/0.705 in

Physical and Magnetic Parameters

Window Area

2,470 mm

2

Cross Section (Ae)

358 mm

2

Path Length (Le)

243 mm

Effective Volume (Ve)

86,900 mm

3

Area Product

885,000 mm

4

Surface Area*

Unwound Core

20,000 mm

2

40% Winding Factor

36,000 mm

2

Winding Turn Length*

Winding Factor

Length/Turn (mm)

0%

83.1

20%

97.6

25%

101

30%

104

35%

108

40%

111

45%

116

50%

120

60%

128

70%

138

Wound Coil Dimensions*

40% Winding Factor

OD

112 mm

HT

34.9 mm

Completely Full Window

Max OD

136 mm

Max HT

55.1 mm

Core Dimensions 

OD ID HT

Permeability (µ) 

A

L

 ± 8%

Part Number

Kool Mµ

®

Kool Mµ

® 

MAX Kool Mµ

® 

XF

lux

®

High Flux

Edge

®

MPP

14

26

77101

79101

-

-

58101

-

55101

19

35

-

79097

-

78097

-

-

26

48

77102

79102

-

78102

58102

-

55102

40

74

77100

79100

-

78100

58100

-

-

60

111

77099

79099

-

78099

58099

-

55099

75

138

77159

-

-

78159

-

-

-

90

167

77096

-

-

78096

-

-

-

125

232

77098

-

-

-

-

-

55098

* See Toroid Winding pg. 19

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Cor
e Data

www.mag-inc.com

127

55337A2

1.000”

3.094”

5.219”

132.6 mm OD

Before Finish (nominal)

132.56 mm/5.219 in

78.59 mm/3.094 in

 25.40 mm/1.000 in

After Finish (limits)

133.96 mm/5.274 in

77.19 mm/3.039 in

 26.80 mm/1.055 in

Physical and Magnetic Parameters

Window Area

4,710 mm

2

Cross Section (Ae)

678 mm

2

Path Length (Le)

324 mm

Effective Volume (Ve)

220,000 mm

3

Area Product

3,190,000 mm

4

Surface Area*

Unwound Core

36,000 mm

2

40% Winding Factor

65,000 mm

2

Winding Turn Length*

Winding Factor

Length/Turn (mm)

0%

110

20%

130

25%

135

30%

139

35%

145

40%

150

45%

156

50%

162

60%

173

70%

187

Kool Mµ A

L

 vs. DC Bias

A

L

 (nH/

T  )

2

A·T

160

140

120

100

80

60

40

20

0

0

500

1,000

1,500

2,000

2,500

3,000

3,500

4,000

4,500

5,000

60µ

40µ

26µ

14µ

Wound Coil Dimensions*

40% Winding Factor

OD

146 mm

HT

50.7 mm

Completely Full Window

Max OD

179 mm

Max HT

78.8 mm

Core Dimensions 

OD ID HT

Permeability (µ) 

A

L

 ± 8%

Part Number

Kool Mµ

®

Kool Mµ

® 

MAX Kool Mµ

® 

XF

lux

®

High Flux

Edge

®

MPP

14

37

77336

79336

-

-

58336

-

55336

19

50

-

79342

-

78342

-

-

-

26

68

77337

79337

-

78337

58337

-

55337

40

105

77338

-

-

78338

58338

-

-

60

158

77339

-

-

-

58339

-

55339

125

329

-

-

-

-

-

-

55340

147

380

-

-

-

-

-

-

55341

* See Toroid Winding pg. 19

Magnetics-Powder-Core-Catalog-2020-html.html
background image

Cor

e Data

MAGNETICS

128

Surface Area*

Unwound Core

55,000 mm

2

40% Winding Factor

102,000 mm

2

55165A2

1.250”

4.032”

6.500”

165.1 mm OD

Before Finish (nominal)

165.10 mm/6.500 in

102.41 mm/4.032 in

 31.75 mm/1.250 in

After Finish (limits)

166.50 mm/6.555 in

101.02 mm/3.977 in

 33.15 mm/1.305 in

Physical and Magnetic Parameters

Window Area

8,030 mm

2

Cross Section (Ae)

987 mm

2

Path Length (Le)

412 mm

Effective Volume (Ve)

407,000 mm

3

Area Product

7,920,000 mm

4

Winding Turn Length*

Winding Factor

Length/Turn (mm)

0%

132

20%

158

25%

164

30%

170

35%

178

40%

184

45%

192

50%

199

60%

215

70%

233

Kool Mµ A

L

 vs. DC Bias

A

L

 (nH/

T  )

2

A·T

80

60

40

20

0

0

1,500

3,000

4,500

6,000

7,500

9,000

10,500

12,000

13,500

15,000

26µ

14µ

Wound Coil Dimensions*

40% Winding Factor

OD

182 mm

HT

63.2 mm

Completely Full Window

Max OD

228 mm

Max HT

103 mm

Core Dimensions 

OD ID HT

Permeability (µ) 

A

L

 ± 8%

Part Number

Kool Mµ

®

Kool Mµ

® 

MAX Kool Mµ

® 

XF

lux

®

High Flux

Edge

®

MPP

14

42

77164

79164

-

-

58164

-

55164

19

57

-

-

-

78163

-

-

-

26

78

77165

-

-

78165

58165

-

55165

40

120

-

-

-

-

-

-

-

60

180

-

-

-

-

58167

-

55167

* See Toroid Winding pg. 19

Magnetics-Powder-Core-Catalog-2020-html.html
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Cor
e Data

www.mag-inc.com

129

Surface Area*

Unwound Core

54,000 mm

2

40% Winding Factor

96,000 mm

2

55171A2

1.000”

3.500”

6.500”

165.1 mm OD 

Before Finish (nominal)

165.10 mm/6.500 in

88.90 mm/3.500 in

 25.40 mm/1.000 in

After Finish (limits)

167.21 mm/6.583 in

86.89 mm/3.421 in

 27.31 mm/1.075 in

Physical and Magnetic Parameters

Window Area

5,930 mm

2

Cross Section (Ae)

948 mm

2

Path Length (Le)

386.5 mm

Effective Volume (Ve)

366,400 mm

3

Area Product

5,620,000 mm

4

Winding Turn Length*

Winding Factor

Length/Turn (mm)

0%

135

20%

158

25%

163

30%

168

35%

175

40%

179

45%

187

50%

193

60%

206

70%

222

Kool Mµ A

L

 vs. DC Bias

A

L

 (nH/

T  )

2

A·T

90
80
70
60
50
40
30
20
10

0

0

1,000

2,000

3,000

4,000

5,000

6,000

7,000

9,000

8,000

10,000

11,000 12,000

26µ

Wound Coil Dimensions*

40% Winding Factor

OD

181 mm

HT

56.3 mm

Completely Full Window

Max OD

225 mm

Max HT

103 mm

Core Dimensions 

OD ID HT

Permeability (µ) 

A

L

 ± 8%

Part Number

Kool Mµ

®

Kool Mµ

® 

MAX Kool Mµ

® 

XF

lux

®

High Flux

Edge

®

MPP

19

58

-

-

-

78170

-

-

-

26

80

-

-

-

78171

-

-

-

* See Toroid Winding pg. 19

Magnetics-Powder-Core-Catalog-2020-html.html
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Material Data

MAGNETICS

130

For material code see p. 14.
Add permeability code*** to part number, e.g. for 26µ Kool Mµ the complete part number is 00K4022E026. 

E

F

M

L

A

B

C

D

PART NO

A

B

C

D(min)

E(min)

F

L(nom)

M(min)

00_1808E***

(EI-187)

mm

in

19.30±0.30

0.760±0.012

8.10±0.18

0.319±0.007

4.78±0.15

0.188±0.006

5.54

0.218

13.92
0.548

4.78±0.13

0.188±0.005

2.39

0.094

4.65

0.183

00_2510E***

(E-2425)

mm

in

25.40±0.38

1.000±0.015

9.53±0.18

0.375±0.007

6.35±0.10

0.250±0.004

6.22

0.245

18.80
0.740

6.35±0.13

0.250±0.005

3.18

0.125

6.25

0.246

00_3007E***

(DIN 30/7)

mm

in

30.10±0.46

1.185±0.018

15.01±0.23

0.591±0.009

7.06±0.15

0.278±0.006

9.55

0.376

19.86
0.782

6.96±0.20

0.274±0.008

5.11

0.201

6.32

0.249

00_3515E***

(EI-375)

mm

in

34.54±0.51

1.360±0.020

14.15±0.23

0.557±0.009

9.35±0.18

0.368±0.007

9.60

0.378

25.27
0.995

9.32±0.20

0.367±0.008

4.45

0.175

7.87

0.310

00_4017E***

(EE 42/11)

mm

in

42.85±0.64

1.687±0.025

21.08±0.30

0.830±0.012

10.77±0.25

0.424±0.010

14.91
0.587

30.35
1.195

11.89±0.25

0.468±0.010

5.94

0.234

9.27

0.365

00_4020E***

(DIN 42/15)

mm

in

42.85±0.64

1.687±0.025

21.08±0.33

0.830±0.013

15.44±0.25

0.608±0.010

14.91
0.587

30.35
1.195

11.89±0.25

0.468±0.010

5.94

0.234

9.27

0.365

00_4022E***

(DIN 42/20)

mm

in

42.85±0.64

1.687±0.025

21.08±0.33

0.830±0.013

20.02±0.25

0.788±0.010

14.91
0.587

30.35
1.195

11.89±0.25

0.468±0.010

5.94

0.234

9.27

0.365

00_4317E***

(EI-21)

mm

in

40.87±0.61

1.609±0.024

16.51±0.28

0.650±0.011

12.52±0.18

0.493±0.007

10.39
0.409

28.32
1.115

12.52±0.20

0.493±0.008

6.05

0.238

7.87

0.310

00_5528E***

(DIN 55/21)

mm

in

54.86±0.81

2.160±0.032

27.56±0.41

1.085±0.016

20.62±0.38

0.812±0.015

18.52
0.729

37.49
1.476

16.76±0.38

0.660±0.015

8.38

0.330

10.29
0.405

00_5530E***

(DIN 55/25)

mm

in

54.86±0.81

2.160±0.032

27.56±0.41

1.085±0.016

24.61±0.38

0.969±0.015

18.52
0.729

37.49
1.476

16.76±0.38

0.660±0.015

8.38

0.330

10.29
0.405

00_6527E***

(Metric E65)

mm

in

65.15±1.27

2.565±0.050

32.51±0.38

1.280±0.015

27.00±0.41

1.063±0.016

22.20
0.874

44.20
1.740

19.66±0.36

0.774±0.014

10.01
0.394

12.09
0.476

00_7228E***

(F11)

mm

in

72.39±1.09

2.850±0.043

27.94±0.51

1.100±0.020

19.05±0.38

0.750±0.015

17.75
0.699

52.63
2.072

19.05±0.38

0.750±0.015

9.53

0.375

16.89
0.665

00_8020E***

(Metric E80)

mm

in

80.01±1.19

3.150±0.047

38.10±0.64

1.500±0.025

19.81±0.38

0.780±0.015

28.02
1.103

59.28
2.334

19.81±0.38

0.780±0.015

9.91

0.390

19.81
0.780

00_8024E***

mm

in

80.01±1.19

3.150±0.047

24.13±0.64

0.950±0.025

29.72±0.38

1.170±0.015

14.02
0.552

59.28
2.334

19.81±0.38

0.780±0.015

9.91

0.390

19.81
0.780

00_8044E***

mm

in

80.01±1.19

3.150±0.047

44.58±0.64

1.755±0.025

19.81±0.38

0.780±0.015

34.37
1.353

59.28
2.334

19.81±0.38

0.780±0.015

9.91

0.390

19.81
0.780

00_114LE***

mm

in

114.30±0.76
4.500±0.030

46.18±0.38

1.818±0.015

34.93±0.38

1.375±0.015

28.60
1.126

79.50
3.130

35.10±0.38

1.382±0.015

17.17
0.676

22.20
0.874

00_130LE***

mm

in

130.30±3.81
5.130±0.150

32.51±0.30

1.280±0.012

53.85±1.27

2.120±0.050

22.20
0.874

108.46

4.270

20.02±0.76

0.788±0.030

10.01
0.394

44.22
1.741

00_160LE***

mm

in

160.02±2.54
6.300±0.100

38.10±0.64

1.500±0.025

39.62±1.27

1.560±0.050

28.14
1.108

138.18

5.440

19.81±0.76

0.780±0.030

9.91

0.390

59.28
2.334

E Core Data

Magnetics-Powder-Core-Catalog-2020-html.html
background image

www.mag-inc.com

131

Material Data

Cor
e Data

E Core Data

  

26µ  40µ 60µ 90µ

PART NO

A

L

 nH/

T

2

± 8%

Path Length 

Ie (mm)

Cross Section 

Ae (mm

2

)

Volume 

Ve (mm

³

)

00_1808E***

26

35

48

69

40.1

22.8

914

00_2510E***

39

52

70

100

48.5

38.5

1,870

00_3007E***

33

46

71

92

65.6

60.1

3,940

00_3515E***

56

75

102

146

69.4

84.0

5,830

00_4017E***

56

76

105

151

98.4

128

12,600

00_4020E***

80

108

150

217

98.4

183

18,000

00_4022E***

104

140

194

281

98.4

237

23,300

00_4317E***

88

119

163

234

77.5

152

11,800

00_5528E***

116

157

219

322

123

350

43,100

00_5530E***

138

187

261

382

123

417

51,300

00_6527E***

162

230

300

-

147

540

79,400

00_7228E***

130

173

235

-

137

368

50,400

00_8020E***

103

145

190

-

185

389

72,000

00_8024E***

200

275

370

-

131.4

600

78,840

00_8044E***

91

113

170

-

208

389

80,900

00_114LE***

235

335

445

-

215

1,220

262,000

00_130LE***

254

-

-

-

219

1,080

237,000

00_160LE***

180

-

-

-

273

778

212,000

PART NO

A

B

C

Volume   V

e

(mm

3

)

00_4741B***

mm

in

47.50±0.61

1.870±0.024

41.00±0.51

1.614±0.020

27.51±0.41

1.083±0.016

53,600

00_5030B***

mm

in

50.50±0.50

1.988±0.020

30.30±0.30

1.193±0.012

15.00±0.20

0.591±0.008

23,000

00_5528B***

mm

in

54.86±0.64

2.160±0.025

27.56±0.41

1.085±0.016

20.62±0.38

0.812±0.015

31,200

00_6030B***

mm

in

60.00±0.50

2.362±0.020

30.00±0.30

1.181±0.012

15.00±0.20

0.591±0.008

27,000

00_6131B***

mm

in

60.50±0.50

2.382±0.020

30.30±0.30

1.193±0.012

20.00±0.20
0.787±0.01

36,700

00_7020B***

mm

in

70.50±0.50

 2.776±0.020

20.30±0.30

 0.799±0.012

20.00±0.20

0.787±0.008

28,600

00_7030B***

mm

in

70.50±0.50

2.776±0.020

30.30±0.30

1.193±0.012

20.00±0.20

0.787±0.008

42,800

00_8030B***

mm

in

80.50±0.50

3.169±0.020

30.30±0.30

1.193±0.020

20.00±0.21

0.787±0.008

48,800

00_9541B***

mm

in

95.00±0.61

3.740±0.024

41.00±0.51

1.614±0.020

27.51±0.41

1.083±0.016

107,200

For material code see p. 14.   Add permeability code*** to part number, e.g. for 26µ Kool Mµ the complete part number is 00K4022E026.

For material code see p. 14.   Add permeability code*** to part number, e.g. for 26µ Kool Mµ the complete part number is 00K6030B026. 
Note: Inductance is tested in standard picture frame arrangements.

Blocks

E

F

M

L

A

B

C

D

Magnetics-Powder-Core-Catalog-2020-html.html
background image

MAGNETICS

132

Cor

e Data

U Core Data

For material code see p. 14. 
Add permeability code*** to part number, e.g., for 26µ Kool Mµ, the complete part number is 00K6527U026.

  

PART NO

26µ

40µ

60µ

A

L

 nH/

T

2

± 8%

90µ

Path Length 

Ie (mm)

Cross Section 

Ae (mm

2

)

Volume 

Ve (mm

3

)

00_3112U***

61

92

111

179

65.6

101 

6,630

00_4110U***

42

56

78

109

85.2

80

6,820

00_4111U***

52

72

95

138

85.2

101

8,600

00_4119U***

79

110

151

218

85.2

159

13,600

00_5527U***

67

94

120

-

168

172

28,900

00_5529U***

85

121

160

-

168

244

41,000

00_6527U***

89

111

165

-

219

270

59,100

00_6533U***

82

109

143

-

199

250

49,800

00_7236U***

87

114

149

-

219

290

63,500

00_8020U***

64

77

95

-

273

195

53,200

00_8038U***

97

124

179

-

237

354

83,900

PART NO

A

B

C

D(min)

E(min)

L(nom)

00_3112U***

mm

in

31.24±0.51

1.230±0.020

11.18±0.25

0.440±0.010

12.07±0.38

0.475±0.015

2.54

0.100

14.22
0.560

8.26

0.325

00_4110U***

mm

in

40.64±0.51

1.600±0.020

11.18±0.51

0.440±0.020

9.53±0.38

0.375±0.015

2.54

0.100

23.62
0.930

8.38

0.330

00_4111U***

mm

in

40.64±0.51

1.600±0.020

11.18±0.25

0.440±0.010

12.07±0.38

0.475±0.015

2.54

0.100

23.62
0.930

8.38

0.330

00_4119U***

mm

in

40.64±0.51

1.600±0.020

11.18±0.25

0.440±0.010

19.05±0.38

0.750±0.015

2.54

0.100

23.62
0.930

8.38

0.330

00_5527U***

mm

in

54.86±0.64

2.160±0.025

27.56±0.51

1.085±0.020

16.33±0.38

0.643±0.015

16.76
0.660

33.78
1.330

10.54
0.415

00_5529U***

mm

in

54.86±0.64

2.160±0.025

27.56±0.51

1.085±0.020

23.16±0.38

0.912±0.015

16.51
0.650

33.02
1.300

10.54
0.415

00_6527U***

mm

in

65.15±0.89

2.565±0.035

32.51±0.30

1.280±0.012

27.00±0.38

1.063±0.015

22.20
0.874

44.22
1.741

10.01
0.394

00_6533U***

mm

in

65.15±0.89

2.565±0.035

32.51±0.30

1.280±0.012

20.02±0.38

0.788±0.015

19.61
0.772

39.24
1.545

12.52
0.493

00_7236U***

mm

in

72.39±0.89

2.850±0.035

35.56±0.64

1.400±0.025

20.85±0.38

0.821±0.015

21.36
0.841

43.69
1.720

13.89
0.547

00_8020U***

mm

in

80.01±0.89

3.150±0.035

38.10±0.64

1.500±0.025

19.81±0.38

0.780±0.015

28.14
1.108

59.28
2.334

9.91

0.390

00_8038U***

mm

in

80.01±0.89

3.150±0.035

38.10±0.64

1.500±0.025

23.04±0.38

0.907±0.015

22.43
0.883

49.28
1.940

15.37
0.605

  

E

L

A

B

C

D

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133

PART NO

A

L

 nH/T

2

± 8%

Path Length 

Ie (mm)

Cross Section 

Ae (mm

2

)

Volume 

Ve (mm

3

)

26µ

40µ

60µ

75µ

EQ_2619E***L101

72

110

165

206

54.7

119.8

6,550

EQ_2619E***L124

61

94

141

177

63.9

119.8

7,650

EQ_3222E***L101

84

129

194

241

59.5

152.3

9,100

EQ_3222E***L152

62

96

144

180

79.9

152.3

12,168

EQ_3626E***L174

62

96

144

180

94.7

180.8

17,122

EQ_4128E***L199

57

87

131

163

115.2

199.7

23,000

EQ_5032E***L250

77

118

178

222

133.4

314.1

41,900

PART NO

A

L

 nH/T

2

± 8%

Path Length 

Ie (mm)

Cross Section 

Ae (mm

2

)

Volume 

Ve (mm

3

)

26µ

40µ

60µ

75µ

LP_2314E***L087

45

69

103

129

49.1

67

3,290

LP_2518E***L099

56

87

130

162

55.7

96

5,350

LP_4225E***L123

88

136

204

255

76.1

206

15,680

LP_4225E***L158

75

115

172

215

90.1

206

18,560

PART NO

A

B

C

D

E

F

EQ_2619E***L101

mm

in

26.50
1.043

10.10
0.398

19.00
0.748

6.80

0.268

22.60
0.890

12.00
0.472

EQ_2619E***L124

mm

in

26.50
1.043

12.40
0.488

19.00
0.748

9.10

0.358

22.60
0.890

12.00
0.472

EQ_3222E***L101

mm

in

32.00
1.260

10.10
0.398

22.00
0.866

6.40

0.252

27.60
1.087

13.50
0.531

EQ_3222E***L152

mm

in

32.00
1.260

15.20
0.598

22.00
0.866

11.50
0.453

27.60
1.087

13.50
0.531

EQ_3626E***L174

mm

in

36.00
1.417

17.40
0.685

26.00
1.024

13.40
0.528

32.00
1.260

14.40
0.567

EQ_4128E***L199

mm

in

41.50
1.634

19.90
0.783

28.00
1.102

15.40
0.606

36.50
1.437

14.90
0.587

EQ_5032E***L250

mm

in

50.00
1.969

25.00
0.984

32.00
1.260

19.50
0.768

44.00
1.732

20.00
0.787

  

PART NO

A

B

C

D

E

F

LP_2314E***L087

mm

in

23.39
0.921

8.71

0.343

14.00
0.551

6.20

0.244

19.41
0.764

9.19

0.362

LP_2518E***L099

mm

in

25.00
0.984

9.90

0.390

18.00
0.709

6.90

0.272

21.00
0.827

11.00
0.433

LP_4225E***L123

mm

in

42.00
1.654

12.30
0.484

25.00
0.984

7.90

0.311

35.20
1.386

16.20
0.638

LP_4225E***L158

mm

in

42.00
1.654

15.80
0.622

25.00
0.984

11.40
0.449

35.20
1.386

16.20
0.638

E

A

ØF

B

D

C

A

ØF

B

D

C

ØE

Cor
e Data

EQ Core Data

For material code see p. 14.   Add permeability code*** to part number, e.g. for 26µ Kool Mµ the complete part number is EQK2619E026L101. 

For material code see p. 14.   Add permeability code*** to part number, e.g. for 26µ Kool Mµ the complete part number is LPK2314E026L087.

LP Core Data

LP CORE

EQ CORE

Magnetics-Powder-Core-Catalog-2020-html.html
background image

MAGNETICS

134

E Core Hardware

Magnetics has bobbins available for use with Kool Mµ 
cores . Refer to Magnetics Ferrite Cores catalog for a 
complete listing of available bobbins . The cores are 
standard industry sizes that will fit standard bobbins 
available from many sources . Core pieces can be 

Core Number

Bobbin Number

Number of Pins

Winding Area

Length Per Turn

(mm

2

)

(mm)

1808E

(EI-187)

PCB1808B1

00B180801

8

-

31.6
34.2

40.5
39.4

2510E

(E-2425)

PCB2510V1
PCB2510V2

00B251001

10
10

-

40.6
20.3

51

54.2
54.2
45.4

3515E

(EI-375)

PCB3515M1
PCB3515M2
00B351501

12
12

-

94.8
47.4

113

73.4
73.4

72

4020E

(DIN 42/15)

PCB4020N1

00B402021

12

-

194
207

91.4
97.5

4022E

(DIN 42/20)

PCB4022N1

12

194

102.1

4317E

(EI-21)

PCB4317M1
00B4317B1

12

-

101
122

85.6

86

5528E

(DIN55/25)

PCB5528WC
00B5528B1

14

-

302
302

107.3
107.3

5530E

PCB5530FA

14

289

133.8

6527E

(Metric E65)

00B652701
00B6527B1
00B6527C1

-
-

440
490
430

168
166
203

7228E

(F11)

00B722801

-

408

149

8020E

(Metric E80)

00B8020B1
00B8020C2

-
-

896 
203

163 
203

114LE

OOB114LB1

-

945

230

assembled by bonding the mating surfaces or taping 
around the perimeter of the core set . Caution is advised if 
metal clamps are considered, since eddy current heating 
can occur in conductive material that is very close to the 
surface of low permeability powder core material .

Har

dwar

e

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135

Har
dwar

e

Toroid Hardware

TVH22064A

TVB3610FA

TVB2908TA

TVB22066A

For use with toroids from  
12.7 mm through 25.4 mm

For use with toroids from  
28.6 mm through 38.1 mm

For use with toroids from  
20.5 mm through 31.8 mm

For use with toroids from 12.7 mm through 
22.2 mm

Material

4 Pins

A

Nom.

B

Nom.

C

Nom.

E

Ref.

F

Typ.

G

Typ.

H

Ref.

J

Ref.

Nylon 6/6

rated UL94V0

CP wire 

1.02 mm

19.1 mm

3.94 mm

10.8 mm

9.78 mm

6.35 mm

15.2 mm

3.30 mm

3.81 mm

Material 14 Pins

A

Nom.

B

Nom.

C

Nom.

D

Nom.

E

Ref.

F

Typ.

G

1

Typ.

G

2

Typ.

H

Ref.

J

Ref.

Phenolic

rated UL94V0

CP wire 

0.99 mm

35.8 mm

7.59 mm

20.8 mm

5.00 mm

12.3 mm

16.0 mm

5.00 mm

6.30 mm

4.5 mm

9.75 mm

Material 10 Pins

A

Nom.

B

Nom.

C

Nom.

D

Nom.

E

Ref.

F

Typ.

G

Typ.

H

Ref.

J

Ref.

Phenolic

rated UL94V0

CP wire 

0.99 mm

27.0 mm

7.49 mm

19.0 mm

5.00 mm

11.0 mm

15.0 mm

5.00 mm

3.51 mm

8.13 mm

Material

6 Pins

A

Nom.

B

Nom.

C

Nom.

D

Nom.

E

Ref.

F

Typ.

G

Typ.

H

Ref.

J

Ref.

Phenolic

rated UL94V0

CP wire 

0.99 mm

19.0 mm

5.44 mm

10.8 mm

3.51 mm

4.80 mm

6.00 mm

7.49 mm

2.01 mm

5.49 mm

Magnetics-Powder-Core-Catalog-2020-html.html
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MAGNETICS

136

Toroid Hardware

Har

dwar

e

For use with toroids  
from  44.4 mm  
through 71.1 mm 

For use with toroids  
from 38.1 mm  
through 63.5 mm  

For use with toroids from 25.4 mm 
(1.000”) through 40.6 mm

For use with toroids from 20.5 mm 
(0.810”) through 30.5 mm

Material

4 Pins

A

Nom.

B

Nom.

C

Nom.

E

Ref.

F

Typ.

G

Typ.

H

Ref.

J

Ref.

Nylon 6/6

rated UL94V0

CP wire

1.27 mm

43.2 mm

5.08 mm

27.9 mm

25.7 mm

22.9 mm

38.1 mm

2.29 mm

5.08 mm

Material

4 Pins

A

Nom.

B

Nom.

C

Nom.

E

Ref.

F

Typ.

G

Typ.

H

Ref.

J

Ref.

Nylon 6/6

rated UL94V0

CP wire

1.27 mm

35.6 mm

5.08 mm

22.9 mm

20.6 mm

17.8 mm

30.5 mm

2.29 mm

5.08 mm

Material

4 Pins

A

Nom.

B

Nom.

C

Nom.

E

Ref.

F

Typ.

G

Typ.

H

Ref.

J

Ref.

Nylon 6/6

rated UL94V0

CP wire

1.27 mm

27.9 mm

5.08 mm

20.3 mm

18.0 mm

15.2 mm

22.9 mm

2.29 mm

5.08 mm

Material

4 Pins

A

Nom.

B

Nom.

C

Nom.

E

Ref.

F

Typ.

G

Typ.

H

Ref.

J

Ref.

Nylon 6/6

rated UL94V0

CP wire

1.21 mm

25.4 mm

5.08 mm

15.2 mm

13.0 mm

10.2 mm

20.3 mm

2.29 mm

5.08 mm

TVH61134A

TVH49164A

TVH38134A

TVH25074A

 

TV-H4916-4A

    

Usable with toroids from 1.500" (38.1m m) through 2.500" (63.5mm). 

 

 

Top View

Material

Nylon,

rated UL94V0

4 Pins

0.050"

CP wire

A

Nom.

1.400"

35.6mm

B

Nom.

0.200"

5.1mm

C

Nom.

0.900"

22.9mm

E

Ref.

0.810"

20.6mm

F

Typ.

0.700"

17.8mm

G

Typ.

1.200"

30.5mm

H

Typ.

0.090"

2.3mm

J

Typ.

0.200"

5.1mm

B

J

C

E

F

A

G

H

 

 

TV-H4916-4A

    

Usable with toroids from 1.500" (38.1m m) through 2.500" (63.5mm). 

 

 

Top View

Material

Nylon,

rated UL94V0

4 Pins

0.050"

CP wire

A

Nom.

1.400"

35.6mm

B

Nom.

0.200"

5.1mm

C

Nom.

0.900"

22.9mm

E

Ref.

0.810"

20.6mm

F

Typ.

0.700"

17.8mm

G

Typ.

1.200"

30.5mm

H

Typ.

0.090"

2.3mm

J

Typ.

0.200"

5.1mm

B

J

C

E

F

A

G

H

 

 

TV-H4916-4A

    

Usable with toroids from 1.500" (38.1m m) through 2.500" (63.5mm). 

 

 

Top View

Material

Nylon,

rated UL94V0

4 Pins

0.050"

CP wire

A

Nom.

1.400"

35.6mm

B

Nom.

0.200"

5.1mm

C

Nom.

0.900"

22.9mm

E

Ref.

0.810"

20.6mm

F

Typ.

0.700"

17.8mm

G

Typ.

1.200"

30.5mm

H

Typ.

0.090"

2.3mm

J

Typ.

0.200"

5.1mm

B

J

C

E

F

A

G

H

 

 

TV-H4916-4A

    

Usable with toroids from 1.500" (38.1m m) through 2.500" (63.5mm). 

 

 

Top View

Material

Nylon,

rated UL94V0

4 Pins

0.050"

CP wire

A

Nom.

1.400"

35.6mm

B

Nom.

0.200"

5.1mm

C

Nom.

0.900"

22.9mm

E

Ref.

0.810"

20.6mm

F

Typ.

0.700"

17.8mm

G

Typ.

1.200"

30.5mm

H

Typ.

0.090"

2.3mm

J

Typ.

0.200"

5.1mm

B

J

C

E

F

A

G

H

 

 

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137

Winding T

ables

Winding Tables

6 .60 mm OD (270 size)

4 .65 mm OD (180 size)

6 .60 mm OD (240 size)

3 .94 mm OD (150 size)

6 .35 mm OD (020 size)

3 .56 mm OD (140 size)

AWG 

Wire Size

Single Layer Turns

Single Layer R

DC 

(Ohms, 

Ω

)

26

11

0.0266

27

13

0.0390

28

15

0.0566

29

17

0.0790

30

19

0.112

31

22

0.163

32

25

0.228

33

28

0.322

34

32

0.474

35

36

0.658

36

41

0.936

37

45

1.26

38

51

1.81

39

58

2.68

40

67

3.92

41

75

5.37

42

85

7.61

43

95

11.0

44

103

14.4

45

121

21.8

AWG 

Wire Size

Single Layer Turns

Single Layer R

DC 

(Ohms, 

Ω

)

27

11

0.0212

28

12

0.0289

29

14

0.0414

30

16

0.0597

31

18

0.0838

32

20

0.114

33

23

0.165

34

27

0.249

35

31

0.352

36

34

0.481

37

38

0.661

38

43

0.942

39

50

1.42

40

57

2.05

41

64

2.82

42

73

4.01

43

81

5.73

44

88

7.52

45

103

11.3

46

113

15.6

AWG 

Wire Size

Single Layer Turns

Single Layer R

DC 

(Ohms, 

Ω

)

26

11

0.0196

27

13

0.0287

28

15

0.0414

29

17

0.0577

30

19

0.0815

31

22

0.118

32

25

0.165

33

28

0.233

34

32

0.342

35

36

0.473

36

41

0.672

37

45

0.907

38

51

1.30

39

58

1.92

40

67

2.80

41

75

3.84

42

85

5.43

43

95

7.82

44

103

10.3

45

121

15.5

AWG 

Wire Size

Single Layer Turns

Single Layer R

DC 

(Ohms, 

Ω

)

28

11

0.0251

29

13

0.0364

30

15

0.0529

31

17

0.0749

32

19

0.103

33

22

0.149

34

25

0.218

35

28

0.300

36

32

0.427

37

35

0.574

38

40

0.826

39

46

1.23

40

53

1.80

41

59

2.44

42

68

3.52

43

76

5.06

44

82

6.60

45

96

9.93

46

105

13.6

47

117

19.1

AWG 

Wire Size

Single Layer Turns

Single Layer R

DC 

(Ohms, 

Ω

)

26

12

0.0216

27

14

0.0312

28

16

0.0446

29

18

0.0617

30

21

0.0910

31

23

0.125

32

26

0.173

33

30

0.252

34

34

0.367

35

39

0.518

36

44

0.729

37

48

0.977

38

54

1.39

39

62

2.07

40

71

3.00

41

80

4.13

42

91

5.87

43

101

8.40

44

110

11.1

45

128

16.6

AWG 

Wire Size

Single Layer Turns

Single Layer R

DC 

(Ohms, 

Ω

)

30

10

0.0286

31

11

0.0392

32

13

0.0567

33

15

0.0821

34

17

0.119

35

20

0.172

36

23

0.246

37

25

0.328

38

28

0.461

39

33

0.704

40

38

1.03

41

43

1.42

42

49

2.01

43

55

2.91

44

59

3.76

45

69

5.65

46

76

7.80

47

85

11.0

48

98

16.0

49

109

22.2

9 .65 mm OD (280 size)

7 .87 mm OD (030 size)

6 .86 mm OD (410 size)

AWG 

Wire Size

Single Layer Turns

Single Layer R

DC 

(Ohms, 

Ω

)

20

12

0.00684

21

13

0.00914

22

15

0.0131

23

18

0.0194

24

20

0.0268

25

23

0.0383

26

26

0.0541

27

29

0.0747

28

33

0.107

29

37

0.147

30

42

0.212

31

47

0.297

32

52

0.404

33

58

0.568

34

67

0.844

35

75

1.17

36

84

1.63

37

92

2.19

38

104

3.13

39

119

4.66

AWG 

Wire Size

Single Layer Turns

Single Layer R

DC 

(Ohms, 

Ω

)

22

12

0.00988

23

14

0.0142

24

16

0.0201

25

18

0.0281

26

20

0.0390

27

23

0.0556

28

26

0.0787

29

29

0.108

30

33

0.156

31

37

0.218

32

41

0.298

33

47

0.430

34

53

0.623

35

60

0.870

36

67

1.21

37

74

1.65

38

83

2.33

39

96

3.50

40

109

5.04

41

122

6.90

AWG 

Wire Size

Single Layer Turns

Single Layer R

DC 

(Ohms, 

Ω

)

22

12

0.0116

23

14

0.0168

24

16

0.0239

25

18

0.0334

26

20

0.0465

27

23

0.0663

28

26

0.0942

29

29

0.129

30

33

0.187

31

37

0.262

32

41

0.358

33

47

0.518

34

53

0.752

35

60

1.05

36

67

1.47

37

74

1.99

38

83

2.82

39

96

4.24

40

109

6.11

41

122

8.37

Magnetics-Powder-Core-Catalog-2020-html.html
background image

MAGNETICS

138

Winding T

ables

Winding Tables

23 .6 mm OD (350 size)

17 .3 mm OD (380 size)

22 .9 mm OD (310 size)

16 .6 mm OD (120 size)

20 .3 mm OD (206 size)

12 .7 mm OD (050 size)

11 .2 mm OD (130 size)

10 .2 mm OD (040 size)

AWG 

Wire Size

Single Layer Turns

Single Layer R

DC 

(Ohms, 

Ω

)

9

11

0.00120

10

13

0.00173

11

15

0.00244

12

17

0.00340

13

19

0.00467

14

22

0.00668

15

25

0.00938

16

28

0.0130

17

32

0.0184

18

36

0.0258

19

41

0.0365

20

46

0.0510

21

51

0.0705

22

58

0.101

23

65

0.140

24

73

0.197

25

82

0.277

26

92

0.392

27

102

0.542

28

115

0.770

AWG 

Wire Size

Single Layer Turns

Single Layer R

DC 

(Ohms, 

Ω

)

13

11

0.00223

14

13

0.00324

15

15

0.00460

16

17

0.00644

17

20

0.00933

18

22

0.0127

19

25

0.0179

20

29

0.0258

21

32

0.0354

22

37

0.0512

23

41

0.0704

24

46

0.099

25

52

0.139

26

59

0.199

27

66

0.277

28

74

0.391

29

82

0.535

30

92

0.764

31

102

1.06

32

114

1.47

AWG 

Wire Size

Single Layer Turns

Single Layer R

DC 

(Ohms, 

Ω

)

10

12

0.00148

11

14

0.00212

12

16

0.00296

13

18

0.00409

14

21

0.00589

15

24

0.00830

16

27

0.0116

17

31

0.0164

18

35

0.0230

19

39

0.0319

20

44

0.0446

21

50

0.0632

22

56

0.0888

23

63

0.124

24

70

0.173

25

79

0.244

26

89

0.345

27

99

0.479

28

111

0.677

29

123

0.927

AWG 

Wire Size

Single Layer Turns

Single Layer R

DC 

(Ohms, 

Ω

)

13

12

0.00234

14

14

0.00336

15

16

0.00471

16

18

0.00654

17

21

0.00940

18

24

0.0133

19

27

0.0185

20

30

0.0255

21

34

0.0359

22

39

0.0516

23

44

0.0722

24

49

0.101

25

56

0.143

26

63

0.203

27

70

0.280

28

78

0.393

29

87

0.542

30

98

0.775

31

108

1.07

32

121

1.48

AWG 

Wire Size

Single Layer Turns

Single Layer R

DC 

(Ohms, 

Ω

)

11

12

0.00163

12

14

0.00232

13

16

0.00324

14

18

0.00449

15

21

0.00644

16

24

0.00909

17

27

0.0126

18

31

0.0179

19

35

0.0251

20

39

0.0347

21

45

0.0498

22

50

0.0692

23

56

0.0962

24

63

0.135

25

71

0.191

26

80

0.270

27

89

0.374

28

100

0.529

29

111

0.725

30

125

1.04

AWG 

Wire Size

Single Layer Turns

Single Layer R

DC 

(Ohms, 

Ω

)

16

12

0.00364

17

14

0.00520

18

16

0.00733

19

19

0.0107

20

21

0.0147

21

24

0.0207

22

28

0.0302

23

31

0.0413

24

35

0.0582

25

40

0.0829

26

45

0.117

27

50

0.161

28

56

0.227

29

63

0.315

30

71

0.451

31

79

0.629

32

87

0.854

33

98

1.21

34

112

1.79

35

125

2.46

AWG 

Wire Size

Single Layer Turns

Single Layer R

DC 

(Ohms, 

Ω

)

16

10

0.00272

17

11

0.00366

18

13

0.00532

19

15

0.00756

20

17

0.0106

21

20

0.0153

22

23

0.0220

23

25

0.0295

24

29

0.0426

25

33

0.0602

26

37

0.0845

27

41

0.116

28

46

0.164

29

52

0.228

30

59

0.328

31

65

0.453

32

72

0.618

33

81

0.877

34

93

1.30

35

104

1.79

AWG 

Wire Size

Single Layer Turns

Single Layer R

DC 

(Ohms, 

Ω

)

20

13

0.00818

21

15

0.0117

22

17

0.0165

23

19

0.0227

24

22

0.0328

25

25

0.0463

26

28

0.0650

27

31

0.0893

28

36

0.130

29

40

0.178

30

45

0.254

31

50

0.354

32

56

0.488

33

63

0.693

34

72

1.02

35

81

1.42

36

91

1.99

37

99

2.66

38

112

3.80

39

128

5.65

9 .65 mm OD (290 size)

AWG 

Wire Size

Single Layer Turns

Single Layer R

DC 

(Ohms, 

Ω

)

20

12

0.00747

21

13

0.0100

22

15

0.0144

23

18

0.0213

24

20

0.0295

25

23

0.0421

26

26

0.0596

27

29

0.0825

28

33

0.118

29

37

0.163

30

42

0.234

31

47

0.328

32

52

0.448

33

58

0.630

34

67

0.937

35

75

1.29

36

84

1.81

37

92

2.44

38

104

3.48

39

119

5.18

Magnetics-Powder-Core-Catalog-2020-html.html
background image

www.mag-inc.com

139

Winding T

ables

Winding Tables

35 .8 mm OD (324 size)

39 .9 mm OD (254 size)

46 .7 mm OD (438 size)

34 .3 mm OD (585 size)

32 .8 mm OD (548 size)

26 .9 mm OD (930 size)

AWG 

Wire Size

Single Layer Turns

Single Layer R

DC 

(Ohms, 

Ω

)

8

18

0.00280

9

21

0.00405

10

24

0.00573

11

27

0.00801

12

31

0.0114

13

35

0.0160

14

39

0.0223

15

44

0.0314

16

50

0.0446

17

56

0.0622

18

63

0.0878

19

71

0.124

20

80

0.175

21

90

0.246

22

101

0.349

23

112

0.483

24

126

0.683

25

141

0.961

26

158

1.36

27

175

1.88

AWG 

Wire Size

Single Layer Turns

Single Layer R

DC 

(Ohms, 

Ω

)

8

17

0.00160

9

20

0.00229

10

23

0.00323

11

26

0.00449

12

30

0.00636

13

34

0.00887

14

38

0.0123

15

43

0.0172

16

48

0.0238

17

54

0.0332

18

61

0.0467

19

69

0.0657

20

77

0.0913

21

87

0.1287

22

98

0.1821

23

109

0.2519

24

122

0.354

25

137

0.497

26

153

0.699

27

170

0.969

AWG 

Wire Size

Single Layer Turns

Single Layer R

DC 

(Ohms, 

Ω

)

8

18

0.00229

9

21

0.00329

10

24

0.00464

11

27

0.00646

12

31

0.00917

13

35

0.0128

14

39

0.0178

15

44

0.0250

16

50

0.0354

17

56

0.0493

18

63

0.0695

19

71

0.0978

20

80

0.138

21

90

0.194

22

101

0.274

23

112

0.379

24

126

0.536

25

141

0.753

26

158

1.06

27

175

1.47

AWG 

Wire Size

Single Layer Turns

Single Layer R

DC 

(Ohms, 

Ω

)

8

16

0.00169

9

19

0.00246

10

22

0.00351

11

25

0.00491

12

28

0.00677

13

32

0.00955

14

36

0.0133

15

41

0.0188

16

46

0.0263

17

52

0.0369

18

58

0.0514

19

65

0.0718

20

73

0.1

21

82

0.141

22

93

0.201

23

103

0.277

24

116

0.392

25

130

0.551

26

146

0.78

27

162

1.08

AWG 

Wire Size

Single Layer Turns

Single Layer R

DC 

(Ohms, 

Ω

)

8

14

0.00147

9

17

0.00218

10

19

0.00299

11

22

0.00427

12

25

0.00598

13

28

0.00826

14

32

0.0117

15

36

0.0163

16

41

0.0232

17

46

0.0322

18

52

0.0455

19

58

0.0632

20

65

0.0883

21

74

0.126

22

83

0.177

23

92

0.245

24

103

0.344

25

116

0.485

26

131

0.691

27

145

0.954

AWG 

Wire Size

Single Layer Turns

Single Layer R

DC 

(Ohms, 

Ω

)

9

11

0.00141

10

13

0.00205

11

15

0.00292

12

17

0.00407

13

20

0.00592

14

22

0.00808

15

25

0.0114

16

29

0.0164

17

33

0.0232

18

37

0.0324

19

42

0.0459

20

47

0.0640

21

53

0.0902

22

60

0.128

23

66

0.176

24

75

0.251

25

84

0.352

26

94

0.497

27

105

0.693

28

117

0.975

46 .7 mm OD (089 size)

AWG 

Wire Size

Single Layer Turns

Single Layer R

DC 

(Ohms, 

Ω

)

8

22

0.00296

9

26

0.00432

10

29

0.00596

11

33

0.00840

12

38

0.0120

13

42

0.0164

14

47

0.0229

15

54

0.0327

16

60

0.0455

17

68

0.0641

18

76

0.0897

19

86

0.127

20

96

0.177

21

108

0.249

22

121

0.352

23

135

0.490

24

151

0.690

25

170

0.975

26

190

1.37

27

211

1.91

AWG 

Wire Size

Single Layer Turns

Single Layer R

DC 

(Ohms, 

Ω

)

8

19

0.0033

9

22

0.0047

10

25

0.0067

11

28

0.0093

12

32

0.0132

13

36

0.0185

14

40

0.026

15

46

0.037

16

51

0.051

17

58

0.073

18

65

0.102

19

73

0.144

20

82

0.202

21

92

0.28

22

104

0.41

23

116

0.57

24

130

0.80

25

146

1.13

26

163

1.59

27

181

2.21

50 .6 mm OD (725 size)

42 .9 mm OD (454 size)

AWG 

Wire Size

Single Layer Turns

Single Layer R

DC 

(Ohms, 

Ω

)

8

18

0.0025

9

21

0.0037

10

24

0.0052

11

27

0.0072

12

31

0.0103

13

35

0.0144

14

39

0.0200

15

44

0.0281

16

50

0.0399

17

56

0.0556

18

63

0.0784

19

71

0.110

20

80

0.156

21

90

0.219

22

101

0.310

23

113

0.433

24

126

0.608

25

142

0.860

26

159

1.22

27

176

1.68

Magnetics-Powder-Core-Catalog-2020-html.html
background image

MAGNETICS

140

Winding T

ables

57 .2 mm OD (195 size)

AWG 

Wire Size

Single Layer Turns

Single Layer R

DC 

(Ohms, 

Ω

)

8

20

0.00322

9

23

0.00458

10

26

0.00642

11

30

0.00921

12

34

0.0130

13

39

0.0185

14

43

0.0254

15

49

0.0362

16

55

0.0508

17

62

0.0714

18

70

0.101

19

78

0.141

20

88

0.199

21

99

0.281

22

111

0.398

23

124

0.555

24

138

0.777

25

156

1.10

26

174

1.56

27

193

2.16

68 .0 mm OD (070 size)

62 .0 mm OD (620 size)

77 .8 mm OD (866 size)

74 .1 mm OD (740 size)

77 .8 mm OD (906 size)

AWG 

Wire Size

Single Layer Turns

Single Layer R

DC 

(Ohms, 

Ω

)

8

41

0.00660

9

47

0.00937

10

53

0.0131

11

60

0.0184

12

67

0.0256

13

76

0.0361

14

85

0.0504

15

95

0.0703

16

107

0.0991

17

120

0.139

18

135

0.195

19

151

0.274

20

169

0.383

21

189

0.538

22

212

0.761

23

236

1.06

24

264

1.49

25

296

2.10

26

331

2.96

27

367

4.11

AWG 

Wire Size

Single Layer Turns

Single Layer R

DC 

(Ohms, 

Ω

)

8

41

0.00607

9

47

0.00860

10

53

0.0120

11

60

0.0169

12

67

0.0234

13

76

0.0329

14

85

0.0459

15

95

0.0640

16

107

0.0901

17

120

0.126

18

135

0.178

19

151

0.248

20

169

0.348

21

189

0.487

22

212

0.689

23

236

0.958

24

264

1.35

25

296

1.90

26

331

2.68

27

367

3.72

AWG 

Wire Size

Single Layer Turns

Single Layer R

DC 

(Ohms, 

Ω

)

6

29

0.00450

7

33

0.00632

8

38

0.00907

9

43

0.0128

10

49

0.0182

11

55

0.0255

12

62

0.0358

13

70

0.0505

14

78

0.0706

15

88

0.0997

16

98

0.139

17

110

0.196

18

124

0.277

19

139

0.390

20

155

0.546

21

174

0.769

22

195

1.09

23

217

1.52

24

243

2.14

25

273

3.03

 

Ω

57 .2 mm OD (109 size)

AWG 

Wire Size

Single Layer Turns

Single Layer R

DC 

(Ohms, 

Ω

)

8

29

0.00397

9

33

0.00558

10

37

0.00773

11

42

0.0109

12

48

0.0154

13

54

0.0215

14

60

0.0297

15

68

0.0420

16

76

0.0586

17

85

0.0816

18

96

0.115

19

108

0.162

20

120

0.225

21

135

0.318

22

152

0.451

23

169

0.625

24

189

0.880

25

212

1.24

26

238

1.76

27

263

2.43

77 .8 mm OD (778 size)

AWG 

Wire Size

Single Layer Turns

Single Layer R

DC 

(Ohms, 

Ω

)

8

32

0.0071

9

37

0.0102

10

41

0.0141

11

47

0.0202

12

53

0.0284

13

60

0.0401

14

67

0.056

15

75

0.079

16

84

0.111

17

95

0.156

18

106

0.219

19

119

0.309

20

133

0.432

21

150

0.61

22

168

0.87

23

187

1.21

24

209

1.70

25

235

2.40

26

263

3.40

27

291

4.71

AWG 

Wire Size

Single Layer Turns

Single Layer R

DC 

(Ohms, 

Ω

)

6

22

0.0027

7

25

0.0038

8

29

0.0054

9

33

0.0077

10

37

0.0107

11

42

0.0151

12

48

0.022

13

54

0.030

14

60

0.042

15

68

0.059

16

76

0.083

17

85

0.116

18

96

0.165

19

108

0.23

20

120

0.32

21

135

0.46

22

152

0.65

23

169

0.90

24

189

1.27

25

212

1.79

AWG 

Wire Size

Single Layer Turns

Single Layer R

DC 

(Ohms, 

Ω

)

6

20

0.00260

7

23

0.00368

8

26

0.00517

9

30

0.00741

10

34

0.0104

11

38

0.0146

12

43

0.0205

13

49

0.0291

14

54

0.0402

15

61

0.0568

16

69

0.0805

17

78

0.114

18

87

0.159

19

98

0.225

20

110

0.316

21

123

0.444

22

138

0.629

23

154

0.878

24

172

1.24

25

194

1.75

Winding Tables

50 .8 mm OD (715 size)

AWG 

Wire Size

Single Layer Turns

Single Layer R

DC 

(Ohms, 

Ω

)

8

25

0.00324

9

29

0.00463

10

33

0.00651

11

37

0.00904

12

42

0.0127

13

47

0.0176

14

53

0.0247

15

60

0.0348

16

67

0.0486

17

76

0.0685

18

85

0.0959

19

95

0.134

20

107

0.189

21

120

0.265

22

135

0.375

23

150

0.520

24

168

0.732

25

189

1.03

26

211

1.46

27

234

2.02

Magnetics-Powder-Core-Catalog-2020-html.html
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141

Winding T

ables

101 .6 mm OD (102 size)

AWG 

Wire Size

Single Layer Turns

Single Layer R

DC 

(Ohms, 

Ω

)

6

38

0.00489

7

43

0.00682

8

49

0.00965

9

55

0.0135

10

62

0.0189

11

70

0.0266

12

79

0.0373

13

89

0.0524

14

99

0.0730

15

112

0.103

16

125

0.145

17

140

0.202

18

157

0.285

19

176

0.400

20

197

0.561

21

221

0.790

22

248

1.12

23

275

1.55

24

308

2.19

25

345

3.09

Winding Tables

132 .6 mm OD (337 size)

165 .1 mm OD (165 size)

AWG 

Wire Size

Single Layer Turns

Single Layer R

DC 

(Ohms, 

Ω

)

6

72

0.0139

7

81

0.0193

8

91

0.0272

9

103

0.0384

10

115

0.0536

11

130

0.0759

12

145

0.106

13

163

0.149

14

182

0.209

15

204

0.293

16

228

0.412

17

256

0.579

18

286

0.814

19

320

1.14

20

358

1.61

21

401

2.26

22

449

3.21

23

499

4.46

24

558

6.29

25

625

8.86

165 .1 mm OD (171 size)

AWG 

Wire Size

Single Layer Turns

Single Layer R

DC 

(Ohms, 

Ω

)

6

61

0.0120

7

69

0.0169

8

78

0.0238

9

88

0.0336

10

99

0.0473

11

111

0.0664

12

125

0.0934

13

140

0.131

14

156

0.183

15

175

0.258

16

196

0.363

17

219

0.508

18

246

0.718

19

275

1.01

20

307

1.41

21

344

1.99

22

386

2.83

23

428

3.92

24

479

5.53

25

537

7.81

AWG 

Wire Size

Single Layer Turns

Single Layer R

DC 

(Ohms, 

Ω

)

6

54

0.00890

7

61

0.0124

8

69

0.0175

9

78

0.0247

10

87

0.0344

11

99

0.0489

12

111

0.0685

13

124

0.0956

14

138

0.133

15

155

0.188

16

174

0.265

17

195

0.371

18

218

0.522

19

244

0.733

20

273

1.03

21

306

1.45

22

343

2.05

23

381

2.85

24

426

4.02

25

478

5.68

Magnetics-Powder-Core-Catalog-2020-html.html
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MAGNETICS

142

Other Products from Magnetics

Ferrites

Ferrite cores are manufactured for a wide variety of 
applications .  Magnetics produces the leading MnZn 
ferrite materials for power transformers, power inductors, 
wideband transformers, common mode chokes, and 
many other applications .  In addition to offering the leading 
materials, other advantages of ferrites from Magnetics 
include the full range of standard planar E, ER, and I 
cores; the widest range of toroid sizes in power and 
high permeability materials; standard gapping to precise 
inductance or mechanical dimension; a wide range of 
available coil formers and assembly hardware; and superior 
toroid coatings available in several options .

Power Materials

Five low loss materials are engineered for optimum 
frequency and temperature performance in power 
applications .  Magnetics’ R, P, F, L, and T materials provide 
superior saturation, high temperature performance, low 
losses and product consistency .

Shapes: E cores, Planar E cores, ER cores, ETD, EC, U 
cores, I cores, PQ, Planar PQ, RM, Toroids, Pot cores, RS 
(round-slab), DS (double slab), EP, Special Shapes .

Applications: Telecom power supplies, computer power 
supplies, commercial power supplies, consumer power 
supplies, automotive, DC-DC converters, telecom data 
interfaces, impedance matching transformers, handheld 
devices, high power control (gate drives), computer 
servers, distributed power (DC-DC), EMI filters, aerospace, 
and medical .

High Permeability Materials

Three high permeability materials (5,000µ J material, 
10,000µ W material, and 15,000µ M material) are 
engineered for optimum frequency and impedance 
performance in signal, choke and filter applications .  These 
Magnetics materials provide superior loss factor, frequency 
response, temperature performance, and product 
consistency .

Shapes: Toroids, E cores, U cores, RM, Pot cores, RS 
(round-slab), DS (double slab), EP, Special Shapes .

Applications: common mode chokes, EMI filters, other 
filters, pulse transformers, current transformers, broadband 
transformers, current sensors, telecom data interfaces, 
impedance matching interfaces, handheld devices, spike 
suppression, and gate drive transformers .

Tape Wound Cores 

Strip wound cores are made from high permeability 
magnetic strip alloys of nickel-iron (80% or 50% nickel), 
and silicon-iron . The alloys are known as Orthonol

®

Permalloy 80, 48 Alloy and Magnesil

®

 . Tape Wound Cores 

are produced as small as 0 .438” OD in hundreds of sizes . 
For a wide range of frequency applications, materials are 
produced in thicknesses from 1/2 mil (0 .013 mm) through 
4 mils (0 .102 mm) . Cases are robust nylon and aluminum 
boxes, rated for 200°C continuous operation and 2,000 
minimum voltage breakdown .

Applications: aerospace, radar installations, jet engine 
controls, power supplies, current transformers, magnetic 
amplifiers, and pulse transformers . Tape wound cores 
are useful for both power and signal circuits in harsh 
environmental conditions where robust component 
operation is essential to achieve high reliability .

Bobbin Cores

 

Bobbin cores are miniature tape cores made from ultra-
thin (0 .000125” to 0 .001” thick) strip material wound on 
nonmagnetic stainless steel bobbins . Bobbin cores are 
generally manufactured from Permalloy 80 and Orthonol

®

 . 

Covered with protective caps and then epoxy coated, 
bobbin cores can be made as small as 0 .05” ID and with 
strip widths down to 0 .032” . Bobbin cores can switch 
from positive to negative saturation in a few microseconds 
or less, making them ideal for analog logic elements, 
magnetometers, and pulse transformers .

Applications: flux gate magnetometers for sensor and 
compass applications, high frequency magnetic amplifiers, 
harmonic generators, oscillators, pulse transformers, 
current transformers, and inverter transformers . Bobbin 
cores are also useful for analog counters, timers, magnetic 
sensors, and other analog circuits in harsh environmental 
conditions where robust and reliable operation is essential .

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 www.mag-inc.com

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 with Magnetics Cores

From novice to experienced designers, our informative website has 
all the tools you need to get your design started.

Design Software for Inductors, Common Mode Filters, 
Current Transformers and MagAmps
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 Magnetics Cores

 

Whether you need a specific part number or are looking for ways to 
narrow your core search, our multiple search functions can guide 
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110 Delta Drive
P.O. Box 11422 
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Phone: 

1.800.245.3984

+1.412.696.1333

e-mail: 

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