Passive Components

New Products 2010/2011

EMC Ferrites
Common Mode Chokes 
Power Inductors
Power Transformers
LAN Transformers

NEW!

Small Component – Huge Award 

WE-PMI Power Multilayer Inductor

We are proud to achieve the position of 1

st 

place 

in product of the year 2010 for the “Passive Components“ 
category, as voted by readers of ELEKTRONIK magazine. 



 

Compact multilayer



 

Suitable for applications with 

  high currents up to 2.5 A



 

Magnetically shielded construction: 

  No crosstalk



 

For DC/DC converters, especially 

  at high switching frequencies (> 1 MHz)



 

For portable devices like PDA and 

  digital cameras

Thanks to all the readers of 
ELEKTRONIK magazine. 
The whole Würth Elektronik team 
feels honoured with this award.

02

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03

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11/10

WE-PMI

Power Multilayer Inductor

Size 0805 / Size 0806

  Characteristics

Compact multilayer type

7

7

Suitable for applications with high currents  

7

7

up to 2.5 A
Magnetically shielded construction: No crosstalk

7

7

Operating temperature: –40 °C to +125 °C

7

7

Recommended soldering profile: Reflow

7

7

Available in two different types

7

7

  Applications

DC/DC converters especially at high switching 

7

7

frequencies (> 1 MHz)
Portable devices like PDA and digital cameras

7

7

* Category Passive Components in the magazine ELEKTRONIK

Electrical properties: Size 0805

Order Code

Inductance  

±20% 

(µH)

Q  

min.

Test 

Frequency  

(MHz)

DCR

±30%

(mΩ)

I

R

 @ 20K  

(mA)

I

R

 @ 40K  

(mA)

I

sat

  

(mA)

SRF 

min.

(MHz)

Qty.

744 797 752 10

1.0

10

1

90

800

1100

700

100

4000

744 797 752 22

2.2

12

270

500

700

500

70

I

R

 referring to self-heating, I

sat

 referring to inductance loss of 30%

Inductance vs. Current

Dimensions (in mm)

Land pattern (in mm)

Electrical properties: Size 0806

Order Code

Inductance  

±20% 

(µH)

Q  

min.

Test 

Frequency  

(MHz)

DCR

±30%

(mΩ)

I

R

 @ 20K  

(mA)

I

R

 @ 40K  

(mA)

I

sat

  

(mA)

SRF 

min.

(MHz)

Qty.

744 797 762 22

2.2

15

1

110

900

1200

400

75

3000

744 797 762 33

3.3

130

800

1100

300

60

744 797 762 47

4.7

160

700

1000

250

45

I

R

 referring to self-heating, I

sat

 referring to inductance loss of 30%

Inductance vs. Current

Dimensions (in mm)

Land pattern (in mm)

0

1

10

1

10

100

1000

10000

Strom/DC Current (mA)

Induktivität/Inductance (µH)

1.0 µH

2.2 µH

0,5 ±0,3

2,0 ±0,2

1,

0

m

ax

.

1,

2

±

0,

2

0,8

0,8

0,8

1,

4

0

1

10

1

10

100

1000

Strom/DC Current (mA)

Induktivität/Inductance (µH)

2.2 µH

3.3 µH

4.7 µH

0,5 ±0,3

2,0 ±0,2

1,

0

m

ax

.

1,

6

±

0,

2

0,8

0,8

0,8

1,

8

Product of the year

2010!*

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11/10

WE-PMI

Power Multilayer Inductor

Size 1008 (Low DCR) / Size 1008 (High Current)

Electrical properties: Size 1008 (Low DCR)

Order Code

Inductance  

±20% 

(µH)

Q  

min.

Test 

Frequency  

(MHz)

DCR

±30%

(mΩ)

I

R

 @ 20K  

(mA)

I

R

 @ 40K  

(mA)

I

sat

  

(mA)

SRF 

min.

(MHz)

Qty.

744 797 871 47

0.47

15

1

90

1500

1900

700

110

3000

744 797 872 10

1.0

15

120

2000

2500

500

90

744 797 872 15

1.5

15

70

1200

1600

800

70

744 797 872 22

2.2

15

80

1100

1500

700

60

744 797 872 33

3.3

20

100

950

1350

400

50

744 797 872 47

4.7

20

110

850

1250

250

40

I

R

 referring to self-heating, I

sat

 referring to inductance loss of 30%

Electrical properties: Size 1008 (High Current)

Order Code

Inductance  

±20% 

(µH)

Q  

min.

Test 

Frequency  

(MHz)

DCR

±30%

(mΩ)

I

R

 @ 20K  

(mA)

I

R

 @ 40K  

(mA)

I

sat

  

(mA)

SRF 

min.

(MHz)

Qty.

744 798 872 10

1.0

15

1

290

600

1000

1200

100

3000

744 798 872 22

2.2

19

400

550

850

1100

70

744 798 872 47

4.7

26

530

450

750

850

50

744 798 872 68

6.8

30

650

350

700

600

40

744 798 873 10

10

35

700

300

650

350

30

I

R

 referring to self-heating, I

sat

 referring to inductance loss of 30%

Inductance vs. Current

Inductance vs. Current

Dimensions (in mm)

Dimensions (in mm)

Land pattern (in mm)

Land pattern (in mm)

0

1

10

1

10

100

1000

10000

Strom/DC Current (mA)

Induktivität/inductance in (µH)

2.2 µH

3.3 µH

4.7 µH

0.47 µH

1.0 µH

1.5 µH

0

1

10

100

1

10

100

1000

10000

Strom/DC Current (mA)

Induktivität/inductance (µH)

1.0 µH

2.2 µH

4.7 µH

6.8 µH

10 µH

0,9 ±0,2

0,5 ±0,3

2 ±0,3

2,5 ±0,3

1 ±0,2

2 ±0,3

0,5 ±0,3

2,5 ±0,3

2,

2

0,8

1,2

0,8

2,

2

0,8

1,2

0,8

05

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11/10

STAR-BUENO

Snap Ferrite

With optical closing control mechanism

  Characteristics

Internal prefixing cable system facilitates the cable 

7

7

assembling process
The security lock guarantees electromagnetic 

7

7

compatibility because only authorized persons can 
unlock the snap ferrite with the STAR-TEC key
Classification of the plastic case: UL94-V0

7

7

Operating temperature: –25 °C to +105 °C

7

7

  Applications

EMC ferrite for the EMI suppression in the frequency 

7

7

area from 1 MHz to 1 GHz
Fastening for round cables with diameter 2.5 mm to 

7

7

8.5 mm or if winded more turns through the ferrite
Reusable because of the key technology therefore 

7

7

perfect for test and measuring purposes in EMC labs

Dimensions 742 758 12 (in mm)

Dimensions 742 758 13 (in mm)

Dimensions 742 758 15 (in mm)

Characteristics of one turn

Electrical properties

Order Code

Impedance (Ω)

Material

Cable 

∅

  

(mm)

25 MHz

100 MHz

742 758 12

100

150

4 W 620

2.5–5.0

742 758 13

120

200

4.5–8.5

742 758 15

180

250

4.5–8.5

20

,0

 ty

p.

28,0 typ.

20

,0

 ty

p.

∅

 Cable

2,5 ~ 5,0

39,0 typ.

24

,0

ty

p.

∅

 Cable

4,5 ~ 8,5

24

,0

ty

p.

55,0 typ.

24,0 typ.

24,0 typ.

∅

 Cable

4,5 

∼

 8,5

742 758 12

1

10

100

1000

1

10

100

1000

Frequenz/frequency (MHz)

Impedanz/impedance 

(

Ω

)

742 758 13

1

10

100

1000

1

10

100

1000

Frequenz/frequency (MHz)

Impedanz/impedance 

(

Ω

)

742 758 15

1

10

100

1000

1

10

100

1000

Frequenz/frequency (MHz)

Impedanz/impedance 

(

Ω

)

Innovative &  

ergonomic design

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11/10

WE-AFB LFS

Low Frequency Axial Ferrite Bead

Suppression in the low frequency range

  Characteristics

Ferrite core made of MnZn, a material which works 

7

7

in the low frequency range
Operating temperature: –25 ºC to +85 ºC

7

7

  Applications

Especially for applications in the low frequency range 

7

7

from 150 kHz to 30 MHz
Suppression of electronic ballasts (i.e. neon tube) in 

7

7

the lighting industry

Electrical properties

Order Code

A  

(mm)

B  

(mm)

C  

(mm)

Impedance (Ω)

Material

Cable 

∅

 

≤

 (mm)

1 Turn

1 MHz

10 MHz

742 772 33

9.5

4.75

9.5

30

40

8 W 5000

4.4

742 772 7

14.2

6.35

28.5

130

100

6.0

742 772 53

16.0

8.0

28.5

100

80

7.6

742 772 9

17.5

9.5

28.5

100

60

9.1

742 772 55

18.6

10.2

28.5

90

60

9.8

742 772 90

26.0

13.0

28.5

90

50

12.5

Sorted according to measurement B

Dimensions

Comparison of core material

Material characteristics

C

A

B

1

1000

100

10

0.1

1

10

100

Frequenz/frequency (MHz)

Impedanz/impedance 

(

Ω

)

NiZn
MnZn

0.01

0.1

1

10

100

1000

MHz

MnZn

NiZn

Materials

150 kHz to 30 MHz

07

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STAR-FIX LFS

Low Frequency Suppressor Snap Ferrite

Suppression in the low frequency range between 300 kHz to 30 MHz

  Characteristics

Ferrite core made of MnZn, a material which works 

7

7

in the low frequency range
Operating temperature: –25 ºC to +85 ºC

7

7

  Applications

Especially for applications in the low frequency range 

7

7

from 150 kHz to 30 MHz
Perfect for applications with varying cable diameter

7

7

Reusable because of the key technology therefore 

7

7

perfect for test and measuring purposes and cables 
with difficult access
Suppression of electronic ballasts (i.e. neon tube) in 

7

7

the lighting industry

Dimensions

Electrical properties

Order Code

A 

(mm)

B 

(mm)

C 

(mm)

Impedance (Ω)

Material

Cable 

∅

 

(mm)

1 MHz

10 MHz

742 727 33

35.1

21.7

18.2

30

45

8 W 5000

4.5–8.0

742 727 22

35.1

31.0

28.0

8.5–12.5

742 71: 

5 safety keys

Impedance vs. Frequency

Comparison of core material

B

A

C

1

1000

100

10

0.1

1

10

100

Frequenz/frequency (MHz)

Impedanz/impedance 

(

Ω

)

NiZn
MnZn

10

100

0.1

1

10

100

Frequenz/frequency (MHz)

Impedanz/impedance 

(

Ω

)

B

150 kHz to 30 MHz

08

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WE-CNSW

SMD Common Mode Line Filter

Size 0603

  Characteristics

High common mode noise suppression at high 

7

7

frequencies
Small influence on high speed signals through 

7

7

winding symmetry
Recommended solder profile: Reflow

7

7

Operating temperature: –40 ºC to +105 ºC

7

7

  Applications

USB 2.0

7

7

IEEE 1394 (Firewire)

7

7

LVDS

7

7

High Speed Data Lines

7

7

Suppression for Common Mode Noise

7

7

LAN

7

7

Electrical properties

Order Code

Impedance @ 100 MHz 

(Ω)

Rated Voltage  

(V)

DCR  

(mΩ)

I

R

  

(mA)

Suitable for

744 230 220

22

50

80

800

High Speed Data Lines

744 230 450

45

110

650

High Speed Data Lines

744 230 900

90

145

550

USB 2.0

744 230 121

120

175

450

IEEE 1394 / Firewire 400 Mbps

744 230 181

180

210

400

IEEE 1394 / Firewire 400 Mbps

744 230 251

250

280

350

High Speed Data Lines

Dimensions (in mm)

Schematic

Land pattern (in mm)

1,60 ±0,1

1,

10

±0

,1

0,

85

±0

,1

0,

25

 re

f.

0,25 ref.

1

2

4

3

2

1

3

4

0,

25

0,

25

0,

75

0,85

0,60

0,85

Size 0603

09

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WE-CNSW

SMD Common Mode Line Filter

Size 0603

744 230 220

1

10

100

1000

1

10

100

1000

Frequenz/frequency (MHz)

Impedanz/impedance 

(

Ω

)

Z (com)

Z (dif)

744 230 121

1

10

100

1000

1

10

100

1000

Frequenz/frequency (MHz)

Impedanz/impedance 

(

Ω

)

Z (com)

Z (dif)

744 230 450

1

10

100

1000

1

10

100

1000

Frequenz/frequency (MHz)

Impedanz/impedance 

(

Ω

)

Z (com)

Z (dif)

744 230 181

1

10

100

1000

1

10

100

1000

Frequenz/frequency (MHz)

Impedanz/impedance 

(

Ω

)

Z (com)

Z (dif)

744 230 900

1

10

100

1000

1

10

100

1000

Frequenz/frequency (MHz)

Impedanz/impedance 

(

Ω

)

Z (com)

Z (dif)

744 230 251

1

10

100

1000

1

10

100

1000

Frequenz/frequency (MHz)

Impedanz/impedance 

(

Ω

)

Z (com)

Z (dif)

10

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WE-CNSW HF

SMD Common Mode Line Filter

Size 0805

  Characteristics

Current compensated data line filter

7

7

High common mode noise suppression at high 

7

7

frequencies
Suitable for high data rates

7

7

Small influence on high speed signals through 

7

7

winding symmetry
Recommended solder profile: Reflow

7

7

Operating temperature: –40 ºC to +125 ºC

7

7

  Applications

USB 3.0

7

7

USB 2.0

7

7

HDMI

7

7

LVDS

7

7

High-Speed data lines

7

7

IEEE 1394 (Firewire)

7

7

Electrical properties

Order Code

Impedance @ 100 MHz 

(Ω)

Rated Voltage  

(V)

DCR  

(mΩ)

I

R

  

(mA)

Suitable for

744 233 670

67

50

240

320

USB 3.0

744 233 900

90

300

280

HDMI

744 233 121

120

300

280

LVDS / USB 2.0

Dimensions (in mm)

Schematic

Land pattern (in mm)

4

3

2

1

1,

2

±0

,2

2,0 ±0,2

1,

2

±0

,2

0,50 ref.

0,

45

re

f.

2

1

3

4

0,90

0,80

0,90

0,

4

0,

4

0,

4

744 233 670

1

10

100

1000

1

10

100

1000

Frequenz/frequency (MHz)

Impedanz/impedance 

(

Ω

)

Z (com)

Z (dif)

744 233 900

1

10

100

1000

1

10

100

1000

Frequenz/frequency (MHz)

Impedanz/impedance 

(

Ω

)

Z (com)

Z (dif)

744 233 121

1

10

100

1000

1

10

100

1000

Frequenz/frequency (MHz)

Impedanz/impedance 

(

Ω

)

Z (com)

Z (dif)

High frequency  

version

Suitable for  

USB 3.0 applications

11

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WE-TPC

SMD Shielded Tiny Power Inductor

Size 2828

  Characteristics

Flat power inductor 2.8 x 2.8 x 2.8 mm

7

7

High current capability up to 4.7 A

7

7

Magnetically shielded which results in a low leakage 

7

7

field
Recommended solder profile: Reflow

7

7

Operating temperature: –40 °C to +125 °C

7

7

  Applications

Portable power like PDA, digital camera, PCMCIA 

7

7

cards and displays
DC/DC converter

7

7

Embedded PC

7

7

Mobile data gathering, telemetric

7

7

Dimensions (in mm)

Land pattern (in mm)

Electrical properties

Order Code

Inductance 

(µH)

Tolerance 

(%)

DCR typ.  

(mΩ)

DCR max.  

(mΩ)

I

R

  

(A)

I

sat

  

(A)

Qty.

744 025 000 47

0.47

±25

19.0

23.0

3.30

4.70

550

744 025 000 72

0.72

±25

23.5

27.5

3.00

4.00

744 025 001

1.20

±20

36.0

42.0

2.60

3.00

744 025 002

2.20

±20

57.0

66.0

1.80

2.40

744 025 003

3.30

±20

85.0

101

1.50

1.80

744 025 004

4.70

±20

100

120

1.35

1.70

744 025 006

6.80

±20

142

165

1.10

1.30

744 025 100

10.0

±20

170

190

1.00

1.10

744 025 150

15.0

±20

356

400

0.72

0.90

744 025 220

22.0

±20

525

575

0.50

0.75

I

R

 referring to 40 K self-heating above ambient temperature

I

sat

 referring to inductance loss of 35% typ.

Inductance vs. Current

2,85 ±0,25

2,

85

±

0,

25

2,

80

±

0,

2

0,975 typ.

0,90 typ.

0,975 typ.

3,

2

1,0

1,2

1,0

1

5

25

0.04

0.2

1

5

25

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

6.0

In

du

kt

iv

itä

t/

in

du

ct

an

ce

 (u

H)

Strom/current (A)

744 025 000 47
744 025 000 72
744 025 001
744 025 002
744 025 003
744 025 004
744 025 006
744 025 100
744 025 150
744 025 220

Small  

package size!

Extremely high 

saturation current!

12

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WE-TDC

SMD Coupled Inductor

Size 8018

  Characteristics

Core material: NiZn

7

7

Low profile

7

7

Magnetical shielded which results in a low leakage 

7

7

field 
8x8 mm case

7

7

1:1 transformer

7

7

Low self-losses

7

7

High self resonance frequency

7

7

Coupled inductor with two identical windings

7

7

Recommended solder profile: Reflow

7

7

Operating temperature: –40 °C up to +125 °C

7

7

  Applications

Non-isolated flyback converter

7

7

Buck or Boost with AUX winding

7

7

BUCK-BOOST, SEPIC, ZETA & CUK Converter

7

7

Switching regulators with secondary unregulated 

7

7

output voltages

Electrical properties

Order Code

Inductance 

(µH)

DCR typ. 

(mΩ)

DCR max. 

(mΩ)

I

R

 max. 

(A)

I

sat

 typ. 

(A)

SRF 

(MHz)

Qty.

744 894 300 033

0.33

11.1

15.0

4.00

9.00

280

550

744 894 300 068

0.68

16.3

21.0

3.30

6.50

190

744 894 300 10

1.00

22.2

28.0

2.85

5.10

136

744 894 300 22

2.20

49.5

58.0

1.90

3.50

85

744 894 300 27

2.70

69.5

80.5

1.85

3.00

65

744 894 300 39

3.90

82.0

94.0

1.60

2.55

60

744 894 300 56

5.60

114

131

1.45

2.20

50

744 894 300 68

6.80

128

146

1.25

2.00

46

744 894 301 00

10.0

190

215

1.00

1.65

35

744 894 301 20

12.0

202

227

0.95

1.55

33

744 894 301 50

15.0

275

308

0.85

1.25

29

744 894 301 80

18.0

345

380

0.80

1.20

27

744 894 302 20

22.0

435

480

0.70

1.10

17

I

R

 40 K over ambient temperature when both windings in series are energized by rated current mentioned. 

I

sat

 inductance drop of 10% typ when energizing one winding by I

sat

 mentioned.

Dimensions (in mm)

Land pattern (in mm)

Schematic

Inductance vs. Current

8,0 ±0,3

8,

0

±0

,3

1,

8

±0

,3

3,2 typ.

1

3

2

4

1,0 typ.

2x

 6

,2

4x

 1

,4

4x 3,6

2

3

4

1

0

5

10

15

20

25

  10

 1

0.1

Strom/current (A)

Induktivität/inductance (µH

)

744 894 300 033

744 894 300 068

744 894 300 10

744 894 300 22

744 894 300 27

744 894 300 39

744 894 300 56

744 894 300 68

744 894 301 00

744 894 301 20

744 894 301 50

744 894 301 80

744 894 302 20

Height 1.8 mm and  

currents up to 14 A

13

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WE-TDC

SMD Coupled Inductor

Size 8038

Electrical properties

Order Code

Inductance 

(µH)

DCR typ. 

(mΩ)

DCR max. 

(mΩ)

I

R

 max. 

(A)

I

sat

 typ. 

(A)

SRF 

(MHz)

Qty.

744 894 400 039

0.39

11.6

14.5

4.50

14.0

210

350

744 894 400 082

0.82

15.9

20.0

3.70

9.60

140

744 894 400 12

1.20

20.2

26.0

3.05

7.50

90

744 894 400 18

1.80

25.5

31.0

2.85

5.80

60

744 894 400 47

4.70

54.5

64.0

1.85

4.20

30

744 894 400 68

6.80

88.0

100

1.45

3.20

25

744 894 401 00

10.0

113

128

1.35

2.60

23

744 894 401 20

12.0

117

132

1.30

2.30

20

744 894 401 50

15.0

165

185

1.10

2.20

17

744 894 401 80

18.0

179

201

1.05

1.90

15

744 894 402 20

22.0

203

228

1.00

1.80 

14

I

R

 of 40 K over ambient temperature when both windings in series are energized by rated current mentioned. 

I

sat

 inductance drop of 10% typ when energizing one winding by I

sat

 mentioned.

Dimensions (in mm)

Land pattern (in mm)

Schematic

Inductance vs. Current

8,0 ±0,3

8,

0

±0

,3

3,

8

±0

,3

3,2 typ.

1

3

2

4

1,0 typ.

2x

 6

,2

4x

 1

,4

4x 3,6

2

3

4

1

0

5

10

15

20

25

10

1

0.1

Strom/current (A)

Induktivität/inductance (µH

)

744 894 400 039

744 894 400 082

744 894 400 12

744 894 400 18

744 894 400 47

744 894 400 68

744 894 401 00

744 894 401 20

744 894 401 50

744 894 401 80

744 894 402 20

14

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11/10

WE-PD2 HV

High Voltage SMD Power Inductor

Size 7850 / Size 1054

  Characteristics

Unshielded construction

7

7

Designed for 400 V

7

7

DC

Recommended solder profile: Reflow

7

7

Operating temperature: –40 °C to +125 °C

7

7

  Applications

Non-isolated buck or buck-boost converter like 

7

7

Power Integrations LinkSwitch-TN
Constant current LED driver

7

7

Utility metering

7

7

Filter for power supply

7

7

Electrical properties: Size 7850

Order Code

Inductance 

(µH)

DCR typ. 

(Ω)

DCR max. 

(Ω)

I

R

 

(A)

I

sat

 

(A)

Qty.

768 775 30

1000

2.78

3.3

0.30

0.30

500

768 775 312

1200

3.77

4.5

0.28

0.28

768 775 322

2200

6.00

7.2

0.15

0.20

I

R

 referring to 40 K self-heating above ambient temperature

I

sat

 referring to inductance loss of 10% typ.

Note

With effect 7th January 2010 the so-called standby regulation came into force within the European Union. Reducing the power consumption until 2020 by 75% in the standby mode is the aim of this 
regulation. Due to that regulation electrical home appliance, communication and office equipment aren’t allowed to spend more than 2 Watt in the standby mode. For devices which are simply 
reactivated only 1 Watt is allowed. From 2014 on the values will reduce further on.
For those standby applications SMPS are needed that are compact and efficient but don’t exceed the requested consumption either. The high voltage version of the power inductors WE-PD2 is 
especially designed for such applications. A special layout combined with a complex test setup guarantees the requested withstand voltage of the rectified supply voltage of 400 V

DC

.

Dimensions (in mm)

Land pattern (in mm)

Electrical properties: Size 1054

Order Code

Inductance 

(µH)

DCR typ. 

(Ω)

DCR max. 

(Ω)

I

R

 

(A)

I

sat

 

(A)

Qty.

768 776 30

1000

2.20

2.6

0.38

0.38

500

768 776 312

1200

2.48

3.0

0.35

0.35

768 776 322

2200

4.40

5.3

0.18

0.26

I

R

 referring to 40 K self-heating above ambient temperature

I

sat

 referring to inductance loss of 10% typ.

Dimensions (in mm)

Land pattern (in mm)

7,0 ±0,3

5,0 ±0,5

7,8 ±0,3

3 ref.

7,5 ref.

3,

0 

re

f.

2,

0 

re

f.

3,

0 

re

f.

8,

0 

re

f.

9,

0

±0

,4

5,

4

±0

,5

10,0 ±0,4

3,5 ref.

9,5 ref.

3,

75

 re

f.

2,

5 

re

f.

3,

75

 re

f.

10

,0

 re

f.

Inductors for non-isolated SMPS 

(400 V

DC

)

15

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11/10

WE-TI HV

Radial Leaded Wire Wound Inductor

Size L

  Characteristics

Radial through-hole inductor

7

7

High saturation core material

7

7

Unshielded construction

7

7

Designed for 400 V

7

7

DC

  Applications

Non-isolated buck or buck-boost converter like 

7

7

Power Integrations LinkSwitch-TN
Constant current LED driver

7

7

Utility metering

7

7

Filter for power supply

7

7

Dimensions (in mm)

Standard

Electrical properties

Order Code

Inductance 

(µH)

DCR max.

(Ω)

I

R

 

(A)

I

sat

 

(A)

Layout

768 772 102

1000

2.08

0.50

0.55

Standard

768 772 122

1200

2.64

0.40

0.45

768 772 152

1500

3.00

0.38

0.40

768 772 182

1800

3.30

0.35

0.38

768 772 222

2200

4.73

0.32

0.32

Note

Those kinds of inductors are often used in low cost and component count buck converter solutions.
Using a switching power supply is more efficient than using passive droppers, independent of comparing a 
capacitive or resistive solution. A universal input voltage range can be build, too.

Schematic example*

* Source: Power Integrations LinkSwitch-TN

5,0 ±0,5

3,

0 

m

ax

.

9,

5 

±

0,

5

5,

0 

±

1,

0

7,8 ±0,5

∅

 0,7 ref.

FB

BP

S

D

LinkSwitch-TN

+

+

–

–

Wide Range
HV DC Input

DC

Output

Inductors for non-isolated SMPS 

(400 V

DC

)

16

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11/10

WE-TI

Radial Leaded Wire Wound Inductor

Size LM

  Characteristics

Low profile <8.0 mm

7

7

Rated current up to 7 A

7

7

Saturation current up to 9 A

7

7

Heatshrink Tube for winding protection

7

7

  Applications

Signal filtering

7

7

Power supply filter

7

7

EMI filter

7

7

Switching regulators with low operating voltages

7

7

Electrical properties

Order Code

L 

(µH)

Tolerance 

(%)

DCR max.

(Ω)

I

R

 

(A)

I

sat

 

(A)

Type 

744 732 015

1.5

±20

0.010

7.00

9.00

Shrink Tube

744 732 100

10

±20

0.033

4.00

4.00

744 732 470

47

±10

0.14

1.80

1.90

744 732 121

120

±10

0.38

1.00

1.10

744 732 221

220

±10

0.70

0.75

1.20

744 732 331

330

±10

1.20

0.60

1.00

744 732 471

470

±10

1.70

0.45

0.90

744 732 681

680

±10

2.20

0.42

0.75

744 732 102

1000

±10

3.40

0.33

0.60

744 732 152

1500

±10

4.70

0.29

0.50

Dimensions (in mm)

Inductance vs. Frequency

Inductance vs. Current

5,0 ±0,5

A

A

9,5 max.

8,

0 

m

ax.

5,

0

±0

,5

1,

0 

m

ax

.

∅ 

0,65 ref.

sectional drawing A-A

0

1

10

100

1000

10000

0.01

0.1

1

10

100

1000

Frequenz/frequency (MHz)

Induktivität/inductance (µH)

744 732 102

744 732 121

744 732 100

744 732 015

0.1

1

10

100

1000

10000

Strom/current (A)

Induktivität/inductance (µH)

0.1

1

10

100

744 732 102

744 732 121

744 732 100

744 732 015

High rated and saturation  

currents in small size

17

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11/10

WE-HCF

SMD High Current Inductor

Size 2013

  Characteristics

Very low core losses (MnZn)

7

7

Recommended solder profile: Reflow

7

7

Operating temperature: –40 °C to +125 °C

7

7

  Applications

Storage inductor for high efficiency DC/DC 

7

7

converters
Single and polyphase buck converters

7

7

Filter for audio applications

7

7

Optimized for high current boost applications

7

7

Electrical properties

Order Code

L

0

 ±15%  

(µH)

L

N

  

(µH)

DCR ±10%  

(mΩ)

I

R

  

(A)

I

sat

  

(A)

Core Material

Qty.

744 363 150 0

15

14.70

8.70

14

21.0

MnZn

100

744 363 220 0

22

21.10

10.65

12

15.0

744 363 330 0

33

19.40

11.40

12

11.0

744 363 470 0

47

12.45

12.20

12

8.5

I

R

 referring to 50 K self-heating above ambient temperature

I

sat

 referring to inductance loss of 30%

Dimensions (in mm)

Land pattern (in mm)

Schematic

Pad 3 only for mechanical 
reasons – no center top function

Inductance vs. Current

21,8 max.

9,0 ±0,5

14,5 max.

2,5 ±0,2

21,5 max

.

3,5 ±1,0

2,0 ref.

3,0 ±0,5

2,5 ±0,2

1

2

3

0

5

10

15

20

25

30

35

40

45

50

10

1

0

In

du

kt

iv

itä

t/

in

du

ct

an

ce

 (µ

H)

Strom/current (A)

744 363 150 0
744 363 220 0
744 363 330 0
744 363 470 0

Extended inductance  

values

18

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11/10

WE-HCM

SMD High Current Flat Wire Inductor 

Size 1190 / Size 1390

  Characteristics

Low core losses (MnZn)

7

7

High saturation current up to 81 A

7

7

DCR tolerance ±7%

7

7

Recommended solder profile: Reflow

7

7

Operating temperature: –40 °C to +125 °C

7

7

  Applications

Multiphase switching regulator

7

7

CPU/Ram power supply

7

7

Power PC

7

7

Input/output filter

7

7

Electrical properties: Size 1190

Order Code

L

o

 ±20% 

(nH)

DCR ±7% 

(mΩ)

I

R

 typ.
(A)

I

sat

 typ.

(A)

Core Material

Qty.

744 301 025

250

0.32

40

65

MnZn

300

744 301 033

330

46

744 301 047

470

35

I

R

 referring to 50 K self-heating above ambient temperature

I

sat

 referring to inductance loss of 20%

Electrical properties: Size 1390

Order Code

L

o

 ±20% 

(nH)

DCR ±7% 

(mΩ)

I

R

 typ.
(A)

I

sat

 typ.

(A)

Core Material

Qty.

744 309 025

250

0.165

50

81.0

MnZn

300

744 309 033

330

62.5

744 309 047

470

40.5

I

R

 referring to 50 K self-heating above ambient temperature

I

sat

 referring to inductance loss of 20%

Dimensions (in mm)

Dimensions (in mm)

Land pattern (in mm)

Land pattern (in mm)

11

,0

±

0,

5

10,5 ±0,5

8,

9

±

0,

5

2,

2

±

0,

2

3,2 ±0,5

11,3 ±0,5

9,

0

±

0,

5

13

,0

±

0,

5

12,5 ±0,5

4,

5

±

0,

2

1,8 ±0,3

14,0 ±0,5

2,

7

4,2

12,1

5

10
15

Multiphase switching 

regulator

Tight DCR for current 

sense applications

19

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11/10

WE-RJ45 LAN

RJ45 LAN Transformer & USB 3.0

  Characteristics

RJ45 Connector with integrated transformer &  

7

7

2x USB 3.0 & LEDs
Extended temperature range: –40 °C bis +85 °C

7

7

10/100/1000BaseT

7

7

  Applications

Ethernet, 1 Gigabit Ethernet

7

7

Embedded PC

7

7

Hubs, Router, Switch

7

7

USB 3.0

7

7

Dimensions (in mm)

Land pattern (in mm)

Schematic

Typical electrical characteristics

Order Code

749 711 061 6

Inductance

350 µH

100 kH, 100 mV, 8 mA

DC

Dielectric Rating

1.5 kV

RMS

1 Minute

Turns Ratio

1:1

3%

Insertion Loss

–1.0 dB max.

1 MHz – 100 MHz

Return Loss

–16 dB min.

1 MHz – 30 MHz

–13.5 dB min.

30 MHz – 60 MHz

–12 dB min.

60 MHz – 80 MHz

–10 dB min.

80 MHz – 100 MHz

Crosstalk

–30 dB min.

1 MHz – 100 MHz

Common Mode Rejection

–30 dB min.

1 MHz – 100 MHz

7,85

33,00 ±0,38

19

,5

0

±

0,

38

32

,0

0

±

0,

38

3,

00

±

0,

5

15,60 ref.

linke / left

LED

rechte / right

LED

2,00

4,00
7,00

8,00

13,14
19,50

1,27

11,43

2,54

13,80

4,

43

12

,7

8

6,

10

5,

68

2,

54

2,

54

2,

00

3,

50

5,

20

6,

70

8x Ø2,30 ± 0,08

18x Ø0,70 ± 0,05

10x Ø0,89 ± 0,08

4x Ø1,03 ± 0,08

12

11

Yellow

J7

J4

J8

J1

J5

J2

0.001 µF/ 2 kV

J3

J6

75 Ω

75 Ω

75 Ω

8

1

9
6

7

2

10

3

4

5

14

Green

13

Orange

4x0,1µF

75 Ω

2x USB 3.0 Connector

20

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11/10

WE-FB

Flyback Transformer

LT3573 / LT3574 / LT3575 / LT3748

  Characteristics

Standard transformers for various output voltages/

7

7

currents available
Easy design of custom power supply due to standard 

7

7

circuit and change of transformers and two 
components for feedback loop
Isolation voltage up to 2.5 kV

7

7

  Applications

Isolated power design

7

7

Sensor interfaces

7

7

Isolated telecom converters

7

7

High power “Automotive”* supplies

7

7

Power over Ethernet

7

7

Assembled demo boards with option to change included transformer

Order Code**

LT IC

Demoboard

Power (W)

Transformer assembled on board

Transformer 2***

Transformer 3***

Order Code

Ouput Voltage

Order Code

Ouput Voltage

Order Code

Ouput Voltage

750 105

LT3574

DC1636A

2.5

750 370 041

5 V / 0.35 A

750 311 304

3.3 V / 0.7 A

750 310 799

12 V / 0.15 A

750 103

LT3573

DC1228A

7

750 370 047

5 V / 1 A

–

–

–

–

750 106

LT3575

DC1643A

10

750 311 675

5 V / 1.4 A

750 310 564

12 V / 0.5 A

750 310 559

3.3 V / 1.5 A

750 107

LT3748

DC1557A

12

750 311 439

12 V / 1 A

750 310 688

3.3 V / 4 A

750 311 689

5 V / 3 A

750 108

LT3748

DC1694A

30

750 311 607

12 V / 2.5 A

750 311 599

15 V / 2 A

750 311 608

24 V / 1.3 A

** all datasheets are available on www.we-online.com
*** different set-ups possible with additional transformers which are included in the design kits

* not AECQ 200 tested & approved

More design support notes to 

download on 

www.we-online.com/LT

21

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11/10

WE-FB

Flyback Transformer

LT3573 / LT3574 / LT3575 / LT3748

Electrical properties* (sorted by power)

Reference to Linear Technology Specification

All possible OFF THE SHELF transformer

up to 3 W up to 7 W up to 14 W

external 
MOSFET

WE Order Code

Power 

(W)

Core

U

in

 

(V)

U

out

 

(V)

I

out

 

(A)

Turns ratio 

NP:NS

L

pri

 

(µH)

Leakage 

(nH)

Isolation 

(V)

I

sat

 

(A)

LT3748

750 311 691

< 10

EP5

8–15

150

0.001

5:1

60

1000

1500

0.25

LT3573

750 310 799

< 10

EP7

18–30

15.0

0.4

1:1

25

125

1500

2.0

LT3574

LT3573

750 370 040

< 10

EP7

18–30

5.0

1.0

3:1

30

200

1500

1.7

LT3574

LT3573

750 370 041

< 10

EP7

18–30

5.0

1.0

3:1

50

450

1500

1.6

LT3574

LT3573

750 370 047

< 10

EP7

18–30

5.0

1.0

3:1

30

150

1500

1.7

LT3573

750 370 058

< 10

EP7

18–30

15.0

0.4

1:1

25

185

1500

2.0

LT3573

750 370 059

< 10

EP7

18–30

5.0

1.0

3:1

50

500

1500

1.6

LT3748

750 311 692

< 10

EP7

8–15

±150

0.001

5:1

80

2000

1500

1.0

LT3573

750 370 042

< 10

ER9.5

5

5.0

0.2

1:1

15

250

1500

1.5

LT3573

LT3575

750 310 471

< 10

EP10

9–30

5.0

1.0

3:1

25

430

1500

2.6

LT3573

LT3575

750 310 559

< 10

EP10

12–30

3.3

1.3

4:1

24

500

1500

2.1

LT3573

LT3575

750 310 562

< 10

EP10

18–30

12.0

0.5

2:1

25

500

1500

2.8

LT3573

LT3575

750 310 563

< 10

EP10

18–30

12.0

0.4

2:1

25

500

1500

2.8

LT3574

LT3573

LT3575

750 310 564

< 10

EP10

12–30

±5.0

1.0

3:1

63

600

1500

–

LT3748

750 311 486

< 10

EP13

12

±200

0.002

1:10

100

4500

1500

2.0

LT3748

750 811 048

< 10

EE16

100–400

30

0.30

4.387:1

1500

14000

IEC61558-2-12

0.65

LT3748

750 311 889

< 10

EFD25

28

250

0.1

1:5

37

160

500

2.95

LT3575

750 311 303

10–15

EP10

9–30

5.0

3.0

5:1

50

800

1500

2.25

LT3574

LT3575

750 311 304

10–15

EP10

9–30

5.0

3.0

4:1

50

850

1500

2.5

LT3575

750 311 305

10–15

EP10

9–30

12.0

1.0

3:1

50

1200

1500

2.8

LT3575

750 311 306

10–15

EP10

9–30

12.0

1.0

3:1

100

1750

1500

1.65

LT3574

LT3575

750 311 307

10–15

EP10

9–30

24.0

0.5

2:1

100

2000

1500

1.9

LT3574

LT3575

750 311 308

10–15

EP10

9–30

24.0

0.5

1:1

100

2100

1500

2.1

LT3573

LT3575

LT3748

750 311 675

10–15

EP10

9–30

5.0

2.0

3:1

25.0

130

1500

2.5

LT3575

LT3748

750 311 567

10–15

EP10

10–40

5.0

3.0

2:1

7.0

800

1500

11.2

LT3748

750 311 424

10–15

EP13

36

12.0

1.0

3:1

100

900

1500

2.4

LT3748

750 311 456

10–15

EP13

36

12.0

1.0

3:1

100

900

2500

2.4

LT3575

LT3748

750 311 458

10–15

EP13

36

3.3

4.0

3:1

15.0

175

2500

5.0

LT3575

LT3748

750 311 564

10–15

EP13

10–40

5.0

3.0

3:1

9.07

120

1500

8.0

LT3575

LT3748

750 311 624

10–15

EP13

10–40

15.0

1.0

1.5:1

9.0

180

1500

>8.0

LT3575

LT3748

750 311 625

10–15

EP13

10–40

3.3

4.0

4:1

9.0

350

1500

>8.0

LT3575

LT3748

750 311 856

10–15

EP13

16–24

4 x 15

4x 0.2

1:4:4:4:4

3.8

250

1000

>12

LT3575

750 311 342

10–15

EFD20

36

5.0

3.0

2:1

15.0

650

1500

5.8

LT3748

750 311 911

10–15

EE20

16–24

4 x 15

4 x 0.2

1:3:3:3:3

6.8

100

1500

–

LT3575

LT3748

750 311 422

15–25

EP13

36

5.0

4.0

5:1

50.0

600

1500

3.3

LT3575

LT3748

750 311 423

15–25

EP13

36

5.0

4.0

2:1

50.0

600

1500

3.85

LT3575

LT3748

750 311 439

15–25

EP13

37–57

12.0

2.1

2:1

37.0

750

1500

2.8

LT3575

LT3748

750 311 457

15–25

EP13

36

5.0

4.0

4:1

50.0

600

2500

3.7

LT3575

LT3748

750 311 688

15–25

EP13

36

5.0

4.0

5:1

50.0

600

1500

3.1

LT3575

LT3748

750 311 689

15–25

EP13

36

5.0

4.0

4:1

50.0

600

2500

3.7

LT3748

750 311 385

25–35

EP13

18–60

13.0

2.3

1.25:1

15.0

100

1500

6.75

LT3748

750 310 617

25–35

EFD20

9–36

12.0

3.0

1:1.16

4.5

150

1500

–

LT3748

750 311 597

25–35

EFD20

20–48

5.0

6.0

3:1

6.0

300

1500

9.5

LT3748

750 311 598

25–35

EFD20

20–48

12.0

2.5

2:1

8.3

300

1500

9.0

LT3748

750 311 599

25–35

EFD20

20–48

15.0

2.0

3:2

8.0

500

1500

12.0

LT3748

750 311 600

25–35

EFD20

30–75

15.0

2.0

2:1

12.0

500

1500

11.0

LT3748

750 311 604

25–35

EFD20

20–48

24.0

1.3

1:1

8.0

300

1500

9.5

LT3748

750 311 605

25–35

EFD20

30–75

5.0

6.0

7:2

15.0

500

1500

9.5

LT3748

750 311 607

25–35

EFD20

30–75

12.0

2.5

5:2

14.0

500

1500

9.5

LT3748

750 311 608

25–35

EFD20

30–75

24.0

1.3

3:2

12.0

500

1500

9.0

LT3748

750 311 797

35–45

EFD20

18–100

12

2.5

2:5:1

14.0

210

4000

11.5

LT3748

750 311 589

35–45

EFD25

20–48

5.0

9.0

3:1

6.0

200

1500

18.0

LT3748

750 311 590

35–45

EFD25

20–48

12.0

3.8

2:1

8.0

200

1500

18.0

LT3748

750 311 591

35–45

EFD25

20–48

15.0

3.0

3:2

8.0

200

1500

20.0

LT3748

750 311 592

35–45

EFD25

20–48

24.0

1.9

1:1

8.0

200

1500

18.0

LT3748

750 311 593

35–45

EFD25

30–75

5.0

9.0

7:2

15.0

300

1500

18.0

LT3748

750 311 594

35–45

EFD25

30–75

12.0

3.8

5:2

15.0

400

1500

18.0

LT3748

750 311 595

35–45

EFD25

30–75

15.0

3.0

2:1

12.0

200

1500

16.0

LT3748

750 311 596

35–45

EFD25

30–75

24.0

1.9

3:2

12.0

200

1500

18.0

LT3748

750 311 771

35–45

EFD25

100–400

15.0

3.0

6:1

500

5000

2500

2.5

LT3748

750 310 988

35–45

EFD25

12

48.0

0.85

1:4.42

14.0

200

1500

>15

LT3748

750 311 783

>45

EFD25

19–70

24

2.5

1.5:1

20

170

1500

16

* Dependant on application, the transformer specification can differ slightly to data sheet

www.we-online.com

WE Inductor Selector

Inductor selector software for SMPS designs: 



 

Selection of power inductors for SMPS



 

For Buck, Boost and Sepic converters



 

Intuitive menu



 

Offline processable



 

Manual calculation alternatively 



 

Free of charge

WE-FLEX Designer

The WE-FLEX Designer calculates suitable transformers for flyback applications.  
Free of charge.

Application Guide

Block diagrams of important applications and interfaces such as: 



 

DC/DC Converter



 

AC/DC Converter



 

CAN



 

USB



 

VGA



 

IP Phone



 

LCD Monitor



 

WLAN



 

RS 232/485

Current Compensated 
Power Line Choke 

WE-FC 

1

Current Compensated 
Power Inductor 

WE-LF

Current Compensated 
Choke 

WE-CMB

Offline Transformer

WE-UNIT

Varistors

WE-VD

AC / DC Converter

SMD Power Inductor

WE-PDx Series

3

Axial Ferrite Bead 

Common Mode

WE-SL5

SMD Tiny Power 
Inductor 

WE-TPC 

2

4

Power Line 

Data Line

RF

Electromechanical

5

EMI 

Suppression

Transformer

Feedback  / 

Sensor

Output 

Filter

Switching 

Circuit

AC

GND

Out 

5V - 48V

1

3

5

5

2

Surge 

Suppression

4

Connectors

WERI

www.we-online.com

SMD Varistors

WE-VS

6

CAN-Interf

ace

 

 

more than you expect

Chip Bead Ferrite

WE-CBF

 

1

ESD Suppressors

WE-VE

3

SMD Common Mode 
Line Filter

WE-SLM
WE-SL2

2

4

WERI

WR-DSUB

VGA

Chip Bead Ferrite 

WE-CBF 

 

3

Snap Ferrite 

STAR-TEC

2

SMD Common Mode 
Choke

WE-CNSW
WE-SL2

 

1

Power Line 

Data Line

Electromechanical

Power Line 

Data Line

Electromechanical

Power Line 

Data Line

Electromechanical

USB 2.0

3

CAN-Bus

µ-Controller

CAN-Buffer

1

1

D_GND

CAN_GND

T

x

CAN_HB

R

x

CAN_LB

2

3

Connector

VGA: Buffer

Output Video Filter

+

-

+ 5 V

- 5 V

820 Ω

820 Ω

75Ω

1

+

-

+ 5 V

- 5 V

820 Ω

820 Ω

75Ω

1

+

-

+ 5 V

- 5 V

820 Ω

820 Ω

75Ω

1

47pF

47pF

180 pF

1

1

Input Filter

47pF

47pF

100 pF

1

1

Input Filter

Gate 74 AHCT04

R

G

B

HS

VS

R

G

B

HS

VS

IN

OUT

3

3

CFA: Power Supply

V+

V-

+5 V

- 5  V

IN

Video Splitter

V+

+12 V

100 nF

220 nF

2

47 µF

V-

+12 V

100 nF

220 nF

2

47 µF

IN

DC / DC

SMD Power Inductor

WE-PD Series

SMD Power Inductor

WE-PD2
WE-GF

2

Chip Bead Ferrite

WE-CBF

1

3

Connectors

WR-COM
WR-DSUB

4

VCC / VCC--Bus

D

A

D

B

1

1

3

3

D+

D-

VCC--USB

GND-USB

5

5

5

6

2

3

V

DD

V

DA

USB-Controller

5

4

4

5

WERI

WR-COM

ESD Suppressors

WE-VEA 
WE-VE

4

Product Mindmap

Overview of all components 
related to applications. 
 
All products are linked to 
the online catalogue, which 
gives you quick access to 
all relevant product details 
and specifications.

www.we-online.de

Ethernet 

diskret

Kommunikation

RS232/

RS485

Video

DISPLAY, FLEXIBLE 

LEITERPLATTE

HAUPTSTROM-

VERSORGUNG

PLATINE / PLATINE 

VERBINDUNG

KABEL / PLATINE 

VERBINDUNG

MiniPower

MicroPower

WR-MPC Series

Klemmleisten

WR-TBL

WESwitch WS-IC

Drehcodierschalter

SCHNITTSTELLEN

Einzelader/

Crimp

Flachband-

kabel / IDC

MiniModule 

WR-MM

starke Vibrationen

Wannenstiftleiste

Pfostenstecker 

WR-BHD

WESwitch WS-RA

Wire To Board WR-WTB

RJ45 WR-COM

HDMI,DVI, WR-COM, 

Dip Schalter

Drehcodierschalter

USB

FireWire

D-SUB WR-DSUB

Firewire IEEE 1394 

WR-COM

USB A / B, 

Mini USB / Micro USB, 

WR-COM

WEASSEMBLY

Stift- und

Buchsenleisten 

WR-PHD

MiniModule 

WR-MM

FPC Stecker WR-FPC 

Stift- und 

Buchsenleisten WR-PHD

Dip Schalter

Kurzhubtaster

USB, MiniUSB, Modular Jack, 

MiniDIN WR-COM, D-SUB 

WR-DSUB, Dip Schalter

Drehcodierschalter

Elektromechanische Bauteile 

auf einen Blick

Board to Board 

Steckverbinder 

WR-BTB

WESwitch WS-RA

www.we-online.de

Passive Bauteile 

auf einen Blick

Klappferrit /

Ferritringe / -hülsen

ja

galvanisch getrennt

RS232/RS485

USB / Firewire

CAN

ohne 

Stecker

im Stecker

ASI

ESD Protection

Ethernet

nein

selbst-

entwickelt

Varistoren:

THT: WE-VD 

SMD: WE-VS

Surge 

Protection

Befilterung

Common Mode:

WE-CMB, WE-LF, 

WE-LF SMD, WE-FC

Differential Mode:

SMD: WE-UKW

THT: WE-SD, WE-TI, 

WE-FI, WE-UKW

Schaltregler

Sperrwandler

Speicherdrossel:

SMD: WE-TPC, WE-HCI, 

WE-PD, WE-PDF, 

WE-PD2, WE-HCF

THT: WE-SI, WE-TI, 

WE-SD

Befilterung

SPANNUNGSVERTEILUNG

Antenne

Chipantennen

WE-MCA

Filter

Filter WE-LPF, 

WE-BPF, WE-BAL

Anpassung

WE-KI, WE-MK

Bluetooth / WLAN / GPS / ISM 868

FUNK / HF

GEHÄUSE 

EMV

Cu-/Alu-

Abschirmbänder

Leitende

Textildichtungen

RJ45 mit 

LAN-Übertrager

SMD / THT mit / 

ohne LED´s

Übertrager 

WE-LAN

SCHNITTSTELLEN

KABEL-

ENTSTÖRUNG

Entstörung

Abschirm-

gehäuse 

WE-SHC

Übertrager

WE-FLEX, 

WE-FLEX

+

, 

WE-FB

HAUPTSTROMVERSORGUNG

Power Factor 

Correction

WE-ASI Drossel

EMI Filter WE-CBF

Stromkompen-

sierte Drossel

WE-SL Serie

ESD Suppressor

WE-VE, WE-VEA

TVS Diode WE-TVS

Stromkompensierte 

Drossel WE-CNSW

PFC Drossel 

WE-PFC

Übertrager 

WE-UNIT

Common Mode:

SMD: WE-SL Series, 

WE-CMS

THT: WE-MLS

Differential Mode:

SMD: WE-CBF, 

WE-SUKW, WE-PF, 

WE-PD2, WE-HCI

THT: WE-UKW, 

WE-TI, WE-SD

Product Finders

With one click you‘ll find the product you are looking for.

Product

Order Code

Shielding

Core

WE-TPC 2811

744 028 x

yes

NiZn

WE-TPC 2813

744 029 x

yes

NiZn

WE-TPC 3510

744 030 x

yes

NiZn

WE-TPC 3816

744 031 x

yes

NiZn

WE-TPC 4818

744 042 x

yes

NiZn

WE-TPC 4828

744 043 x

yes

NiZn

Base [mm]

Height [mm]

2.8x2.8

1.1

2.8x2.8

1.35

3.5x3.3

0.95

3.8x3.8

1.65

4.8x4.8

1.8

4.8x4.8

2.8

I

R

 

I

sat

DCR

I

R

 

I

sat

DCR

I

R

 

I

sat

DCR

I

R

 

I

sat

DCR

I

R

 

I

sat

DCR

I

R

 

I

sat

DCR

0.11 μH

4.8

4.8

0.013

4.8

5.5

0.013

0.18 μH
0.22 μH
0.27 μH
0.33 μH

3.0

2.4

0.027

3.2

2.7

0.023

4.0

6.0

0.008

0.47 μH

2.5

2.0

0.036

2.8

2.2

0.029

3.8

5.0

0.010

0.56 μH
0.75 μH
0.82 μH

2.2

1.6

0.053

2.6

1.8

0.036

3.5

3.7

0.014

1.0 μH

1.9

1.5

0.065

2.5

1.6

0.045

2.6

0.020 0.028

1.2 μH

1.00

1.10

0.095

3.1

2.80

0.017

1.5 μH

1.75

1.55

0.040

1.8 μH

2.4

0.040 0.040

2.7

2.45

0.020

2.2 μH

1.5

1.0

0.125

1.7

1.15

0.088

0.74

0.80

0.140

2.5

2.35

0.023

2.5 μH

1.45

1.25

0.050

2.7 μH

2.2

0.047 0.047

2.35

1.95

0.027

3.0 μH
3.3 μH

1.10

0.85

0.185

1.4

0.95

0.110

0.65

0.72

0.198

1.38

1.10

0.066

1.8

0.05

0.055

2.15

1.80

0.030

3.5 μH
3.9 μH

1.82

1.70

0.065

1.72

1.65

0.047

4.7 μH

0.90

0.70

0.265

1.2

0.80

0.170

0.48

0.50

0.252

1.20

0.90

0.090

1.72

1.65

0.070

1.55

1.70

0.052

5.0 μH
5.6 μH

1.64

1.35

0.085

1.38

1.30

0.080

6.2 μH
6.8 μH

0.83

0.55

0.325

0.95

0.65

0.250

0.40

0.43

0.40

0.85

0.75

0.135

1.50

1.25

0.095

1.30

1.25

0.080

7.6 μH
8.2 μH

1.40

1.10

0.101

1.25

1.05

0.085

9.0 μH

10 μH

0.63

0.45

0.550

0.75

0.50

0.390

0.28

0.35

0.58

0.74

0.56

0.185

1.30

1.00

0.120

1.19

1.00

0.095

12 μH

1.15

0.95

0.140

1.12

0.95

0.108

15 μH

0.62

0.45

0.255

1.03

0.75

0.175

1.03

0.75

0.124

18 μH

0.92

0.70

0.230

0.98

0.70

0.138

22 μH

0.40

0.27

1.22

0.48

0.30

0.900

0.22

0.25

1.39

0.51

0.36

0.410

0.88

0.60

0.255

0.925

0.70

0.155

27 μH
33 μH

0.42

0.32

0.635

0.73

0.50

0.382

0.820

0.55

0.195

39 μH
47 μH

0.30

0.20

2.145

0.39

0.25

0.94

0.750

0.50

0.25

56 μH
68 μH

0.630

0.40

0.34

82 μH

100 μH

0.25

0.18

1.93

0.40

0.30

1.060

0.510

0.29

0.52

120 μH
150 μH

0.420

0.22

0.77

180 μH
220 μH

0.34

0.20

1.15

270 μH
330 μH
390 μH
470 μH

0.240

0.125 2.31

560 μH
680 μH
820 μH

1000 μH
1500 μH

0.090

0.060 6.80

more than you expect

DETaIlED SPECIfICaTIONS aND SamPlES ON WWW.WE-ONlINE.COm

Sm

T POWER INDUCTORS C

ONTINUED

 ON

 NE

xT

 P

ag

E

THIS IS HOW IT WORkS:

1. Select the needed inductance value
2. go right until you meet the sufficient current rating
3. find product and dimensions in the column header

SmT Power Inductors 

This is how it works

0.25

0.18

1.93

I

R

I

sat

DCR

[a]

[A]

[Ω]

Chip Antenna

WE-MCA

748 891 0235

   2,0dBi  

10x10mm

748 891 0245

  3,0dBi  

9,5x2mm

748 892 0245

  1,3dBi  

8x4mm

748 893 0245

  0,5dBi  

3x2mm

748 894 0245

  2,0dBi  

7x2mm

748 891 0570

  3,9dBi  

7x2mm

1555-1595 MHz

2400-2500 MHz

868-960 MHz

5150-5350 MHz

5725-5825 MHz

748 891 2455

   -1,0dBi  

8,5x2mm

748 891 0092

  -0,7dBi  

11x5mm

748 891 0157

  -1,0dBi  

10x3mm

748 891 0520

  3,6dBi  

7x2mm

748 891 2455

   1,0dBi  

8,5x2mm

748 891 0235

   2,0dBi  

10x10mm

WLAN 

2400/2483 MHz

ZigBEE  

2402/2480 MHz

Bluetooth  2402/2480 MHz

HomeRF 

2402/2480 MHz

Balun

WE-BAL

748 421 185

   50/100  

0805

748 422 185

   50/200  

0805

748 425 185

   50/50  

0805

748 420 245

   50/100  

0805

748 422 245

   50/200  

0805

748 425 245

   50/50  

0805

748 421 245

   50/100  

0805

748 425 160

   50/50  

0805

2400-2500 MHz

748 411 245

  50/100  

0603

1400-1500 MHz

2400-2500 MHz

4900-5875 MHz

1500-1700 MHz

5150-5875 MHz

1700-2000 MHz

5725-5875 MHz

748 422 144

   50/200  

0805

748 421 370

   50/100  

0805

748 425 370

   50/50  

0805

3400-4000 MHz

748 425 539

   50/50  

0805

748 425 551

   50/50  

0805

748 421 551

   50/100  

0805

748 421 580

   50/100  

0805

Band-Pass-Filter 

+ Balun

WE-BPFB

2400-2500 MHz

748 358 024

  50/100  

1008

748 323 024 

 

0805

748 351 024

   

1008

748 351 124

   

1008

2400-2500 MHz

Band-Pass-Filter 

WE-BPF

Low-Pass-Filter

WE-LPF

1710-1910 MHz

748 111 024  

0603

748 112 024  

0603

748 125 024  

0805

more than you expect

One-Click-Selection Guide

•

  Reproducible and guaranteed filter 

  & couple characteristics in one 

  SMD component

•

  Design-In support

•

  Customer-specific components on request

•

  Products ex stock

•

  Complete range of RF Filters and Baluns 

  at a glance

The article numbers are 

linked to the website

Frequency (GHz)

0

1

2

3

4

5

6

2400-2500 MHz

902-928 MHz

5150-5875 MHz

748 111 018 

  

0603

1850-1910 MHz

L

TCC-COMPONENTS

748 111 009  

0805

748 111 017  

0603

748 121 055  

0805

ISM  

433/868 MHz

ZigBEE EU 

868 MHz

ZigBEE USA  

915 MHz

Mobil-DB 

878/880 MHz

GSM 

890/914 MHz

 

935/959 MHz

T-DAB  

1452/1479 MHz

GPS  

1559/1610 MHz

DCS  

1710/1880 MHz

GSM  

1710/1785 MHz

 

1805/1880 MHz

DECT  

1880/1990 MHz

PHS 

1880/1930 MHz

WiMAX 

3410/3594 MHz

WLAN 

5150/5250 MHz

 

5250/5350 MHz

 

5470/5725 MHz

 

5725/5825 MHz

DECT2 

5725/5825 MHz

748 891 0235

   2,0dBi  

10x10mm

4900-5920 MHz

748 323 056

   

0805

5150-5875 MHz

3300-3900 MHz

2300-2690 MHz

4900-5875 MHz

2400-2500 MHz

748 321 055

   

0805

748 321 255

   

0805

5150-5825 MHz

748 321 155

   

0805

748 323 055

   

0805

748 323 155

  

0805

5150-5875 MHz

WE-TCI

WE-RFH

WE-RFI

WE-MK

WE-KI

Q Value

0

10

20

30

40

50

60

RF-INDUCTORS

0201

0402

0603

0805

1008

1-22 nH

1-68 nH

1-33 nH

1.6-390 nH

2.2-1500 nH

3.3-1000 nH

1.5-470 nH

1-100 nH

470-10000 nH

470-10000 nH

1200-47000 nH

1-220 nH

1-100 nH

WE-HCM

Inductance: 

0.072 ~ 0.4 μH

DCR: 

0.155 ~ 0.37 mΩ

Rated current: 

26 ~ 31 A

Frequency range: 

0.1 ~ 3 MHz

WE-TI

Inductance: 

1 ~ 22000 µH

DCR: 

0.006 ~ 55 Ω

Rated current: 

0.09 ~ 8.5 A

Frequency range:                     0.01 ~ 90 MHz

WE-SI

Inductance:  

12 ~ 1619 μH

DCR:  

0.008 ~ 0.7 Ω

Rated current:  

0.5 ~ 5 A

Frequency range:  

0.01 ~ 0.1 MHz

STAR-RING

Impedance 1 Turn @ 25 MHz: 

64 ~ 142 Ω

Impedance 1 Turn @ 100 MHz: 

119 ~ 327 Ω

Cable diameter: 

8 ~ 27 mm

Frequency range:                      5 ~ 2000 MHz

STAR-FLAT 

Impedance 1 Turn @ 25 MHz: 

42 ~ 97 Ω

Impedance 1 Turn @ 100 MHz: 

114 ~ 194 Ω

No. of Pins: 

26 ~ 50

Frequency range:                      5 ~ 2000 MHz

WE-TOF

Impedance 1 Turn @ 25 MHz: 

25 ~ 110 Ω 

Impedance 1 Turn @ 100 MHz: 

37 ~ 200 Ω 

Cable diameter: 

3.0 ~ 33.4 mm

Frequency range:              

1 ~ 2000 MHz

WE-AFB

Impedance 1 Turn @ 25 MHz: 

44 ~ 300 Ω 

Impedance 1 Turn @ 100 MHz: 

70 ~ 451 Ω 

Cable diameter: 

3.3 ~ 17.5 mm

Frequency range:                      1 ~ 2000 MHz

WE-SAFB

Impedance 1 Turn @ 25 MHz:  

20 ~ 144 Ω

Impedance 1 Turn @ 100 MHz:  

40 ~ 278 Ω

Cable diameter:  

0.56 ~ 4 mm

Frequency range:  

1 ~ 1000 MHz

Passive Components 

One-Click Selection Guide 

Ferrites for PCB Assembly

WE-MI

Inductance: 

0.047 ~ 10 µH

DCR: 

0.15 ~ 2.1 Ω 

Rated current: 

3 ~ 300 mA

Frequency range:                    

1 ~ 100 MHz

WE-SD

Inductance: 

2 ~ 10 µH

DCR: 

1.7 ~ 33 mΩ

Rated current: 

2.5 ~ 15 A

Frequency range:                     0.01 ~ 90 MHz

WE-FI

Inductance: 

8.2 ~ 860 µH

DCR: 

0.01 ~ 0.45 Ω

Rated current: 

0.4 ~ 5 A

Frequency range:                     0.01 ~ 0.3 MHz

Filter Chokes

Common Mode Chokes

Recommended by the following IC manufacturers:

WE-CBF

Impedance @ 100 MHz: 

5 ~ 2700 Ω 

DCR: 

0.008 ~ 1.5 Ω 

Rated current: 

50 ~ 6000 mA

Frequency range:                    

6 ~ 2000 MHz

Sizes:                                        0402 ~ 1812

WE-CBF HF

Impedance @ 100 MHz:  

180 ~ 1000 Ω

DCR:  

0.25 ~ 1.8 Ω

Rated current:  

50 ~ 600 mA

Frequency range:  

300 ~ 3000 MHz

Sizes:  

0402 ~ 0603 

WE-PBF

Impedance @ 100 MHz: 

42 ~ 98 Ω 

DCR: 

0.6 ~ 0.9 mΩ 

Rated current: 

6 A

Frequency range:                      6 ~ 2000 MHz
 

WE-PF

DCR: 

9 ~ 30 mΩ 

Rated current: 

4.5 ~ 10 A

Frequency range:                     

1 ~ 100 MHz

WE-CMS

Impedance @ 25 MHz:                        

34 Ω

Impedance @ 100 MHz:                         52 Ω
Frequency range:                     10 ~ 1000 MHz

WE-SUKW 

Impedance @ 25 MHz: 

272 ~ 425 Ω

Impedance @ 100 MHz: 

416 ~ 580 Ω

Frequency range:                     0.1 ~ 800 MHz

WE-UKW

Impedance @ 25 MHz: 

145 ~ 920 Ω

Impedance @ 100 MHz: 

230 ~ 1240 Ω

Frequency range:                     0.1 ~ 500 MHz

WE-MLS

Impedance @ 25 MHz: 

150 ~ 292 Ω

Impedance @ 100 MHz: 

150 ~ 334 Ω

Frequency range:                    

10 ~ 800 MHz

WE-CMB 

Inductance: 

0.5 ~ 39 mH

DCR: 

1.7 ~ 3000 mΩ

Rated current: 

0.3 ~ 35 A

Frequency range:                    

0.1 ~ 50 MHz

WE-CMB HC 

Inductance:  

0.175 ~ 0.7 mH

DCR:  

2.7 ~ 13 Ω

Rated current:  

5 ~ 10 mA

Frequency range:  

0.1 ~ 100 MHz

WE-CMB NiZn 

Inductance: 

14 ~ 110 µH

DCR: 

27 ~ 80 mΩ

Rated current: 

1.5 ~ 10 A

Frequency range:                    

4 ~ 500 MHz

WE-LF 

Inductance: 

0.4 ~ 50 mH

DCR: 

0.02 ~ 2.6 Ω

Rated current: 

0.3 ~ 6 A

Frequency range:                     0.1 ~ 500 MHz

WE-LF SMD

Inductance:  

0.7 ~ 47 mH

DCR:  

0.03 ~ 2.6 Ω

Rated current:  

0.3 ~ 4 A

Frequency range:  

0.1 ~ 500 MHz

WE-FC

Inductance: 

0.82 ~ 33 mH

DCR: 

0.065 ~ 2.5 Ω

Rated current: 

0.3 ~ 2 A

Frequency range: 

0.01 ~ 20 MHz

EMI Shielding Material

EMI Shielding Material

Conductive shielding gasket, earthing belts, 
conductive foam, EMI shielding tape, earthing 
nylon clips

D-SUB Filter Connectors

D-SUB Filter Connectors

Bent 90°, solder cup, solder pin straight, 
filter adapter

LAN Transformers

WE-LAN

compliant with IEEE 802.3 standards
for Ethernet, Powerover Ethernet, 1 Gigabit 
Ethernet & Power over Ethernet plus

WE-LAN HV

Compliant with IEEE802.3 standards
4 kV Hipot test

WE-RJ45 LAN / WE-RJ45 LAN HPLE

for ADSL Modems, LAN, embedded PCs, Hubs, 
Routers and Switches

WE-AMT 

for Analog Modems

WE-ISDN

compliant with ITUG.703 ISDN-Primary rate 
recommendations

WE-DSL

compliant with IEC905 for ADSL, ADSL 2+, 
HDSL. SHDSL, UDSL applications

Telecom Transformers

WE-KI, WE-RFI, WE-RFH

Inductance: 

1 ~ 47000 nH

Sizes: 

0402, 0603, 0805, 1008

Frequency range:                     90 ~ 5000 MHz

WE-TCI

Inductance: 

1 ~ 68 nH

Sizes: 

0402, 0603

Frequency range:                     90 ~ 5000 MHz

WE-MK

Inductance: 

1 ~

 

220 nH

Sizes: 

0201, 0402, 0603

Frequency range: 

70 ~ >10000 MHz

RF Inductors

LTCC Components

WE-LPF

Frequency range: 

902 ~ 5875 MHz

Sizes: 

0603, 0805

WE-BPF

Frequency range: 

2400 ~ 5920 MHz

Sizes: 

0805, 1008

WE-BAL

Frequency range: 

1400 ~ 5875 MHz

Sizes: 

0603, 0805

WE-MCA

Frequency range: 

868 ~ 5875 MHz

STAR-FIX

Impedance 1 Turn @ 25 MHz: 

145 ~ 151 Ω

Impedance 1 Turn @ 100 MHz: 

246 ~ 270 Ω

Cable diameter: 

4.5 ~ 12.5 mm

Frequency range: 

5 ~ 2000 MHz

STAR-FIX LFS 

Impedance 1 Turn @ 25 MHz:  

30 Ω

Impedance 1 Turn @ 100 MHz:  

45 Ω

Cable diameter:  

4.5 ~ 8 mm

Frequency range:  

0.3 ~ 30 MHz

STAR-GAP

Impedance 1 Turn @ 25 MHz:  

28 ~ 35 Ω

Impedance 1 Turn @ 500 MHz: 

345 ~ 400 Ω

Cable diameter: 

4.5 ~ 12.5 mm

Frequency range:                   100 ~ 2000 MHz

Ferrites for Cable Assembly

STAR-TEC

Impedance 1 Turn @ 25 MHz: 

98 ~ 176 Ω

Impedance 1 Turn @ 100 MHz: 

182 ~ 321 Ω

Cable diameter: 

3.5 ~ 12.5 mm

Frequency range:                      5 ~ 2000 MHz

Ferrites for Cable Assembly

WE-PD4 

Inductance: 

0.47 ~ 10000 µH

DCR: 

0.016 ~ 39 Ω

Rated current: 

0.07 ~ 18 A

Frequency range:                    

0.1 ~ 10 MHz

Power Inductors

WE-PMI

Inductance:  

0.47 ~ 10 μH

DCR:  

90 ~ 700 mΩ

Rated current:  

0.3 ~ 2 A

Frequency range:  

1 ~ 10 MHz

WE-GF

Inductance: 

0.1 ~ 1000 µH

DCR: 

0.32 ~ 50 Ω

Rated current: 

30 ~ 450 mA

Frequency range:                     0.1 ~ 100 MHz

WE-LQ

Inductance: 

1 ~ 2200 µH

DCR: 

0.08 ~ 63 Ω

Rated current: 

0.04 ~ 1.8 A

Frequency range:                     10 ~ 1000 MHz

WE-TPC

Inductance: 

0.11 ~ 1500 µH

DCR: 

0.0045 ~ 9 Ω

Rated current: 

80 ~ 8500 mA

Frequency range:                    

0.1 ~ 10 MHz

WE-PD

Inductance: 

0.47 ~ 1500 µH

DCR: 

0.003 ~ 9.44 Ω

Rated current: 

0.2 ~ 23.5 A

Frequency range:                    

0.1 ~ 10 MHz

WE-PDF

Inductance: 

0.22 ~ 30 μH

DCR:  

7 ~ 49.2 Ω

Rated current:  

3.7 ~ 10.3 A

Frequency range: 

 0.1 ~ 10 MHz

WE-PD2

Inductance: 

0.12 ~ 820 µH

DCR: 

0.0035 ~ 2.55 Ω

Rated current: 

0.32 ~ 10 A

Frequency range:                    

0.1 ~ 10 MHz

WE-PD3

Inductance: 

1 ~ 1000 µH

DCR: 

0.027 ~ 3.2 Ω

Rated current: 

0.19 ~ 3.9 A

Frequency range:                    

0.1 ~ 10 MHz

WE-HCF

Inductance: 

0.7 ~ 10 μH

DCR: 

0.83 ~7.96 mΩ

Rated current: 

16 ~ 32 A

Frequency range: 

0.1 ~ 3 MHz

WE-DD 

Inductance: 

1.3 ~ 220 µH

DCR: 

0.016 ~ 1.73 Ω

Rated current: 

0.3 ~ 8.6 A

Frequency range:                    

0.1 ~ 10 MHz

WE-HCI

Inductance: 

0.13 ~ 47 µH

DCR: 

0.35 ~ 34 mΩ

Rated current: 

3.5 ~ 415 A

Frequency range:                    

0.1 ~ 3 MHz

WE-HCC

Inductance:  

0.22 ~ 10 μH

DCR:  

0.51 ~ 20.7 mΩ

Rated current:  

9 ~ 27 A

Frequency range:  

0.1 ~ 3 MHz

WE-SL

Inductance: 

35 ~ 4700 µH

DCR: 

0.035 ~ 0.85 Ω

Rated current: 

0.2 ~ 2.7 A

Frequency range:                 

0.01 ~ 600 MHz

WE-SL5 HC

Inductance:  

5 ~ 9 μH

DCR:  

0.0055 ~ 0.011 Ω

Rated current:  

3.5 ~ 5 A

Frequency range:  

0.5 ~ 300 MHz

Common Mode Chokes

WE-SLM

Inductance: 

11 ~ 100 µH

DCR: 

0.18 ~ 0.58 Ω

Rated current: 

300 mA

Frequency range:                    

9 ~ 600 MHz 

WE-CNSW

Impedance @ 100 MHz: 

67 ~ 2200 Ω

DCR: 

0.25 ~ 1.2 Ω

Rated current: 

200 ~ 400 mA

Frequency range:                     10 ~ 1000 MHz

WE-SL5

Inductance: 

120 ~ 4700 µH

DCR: 

0.025 ~ 0.72 Ω

Rated current: 

350 ~ 2500 mA

Frequency range:                    

9 ~ 600 MHz

WE-SL3

Inductance: 

20 ~ 100 µH

DCR: 

0.14 ~ 0.45 Ω

Rated current: 

450 ~ 700 mA

Frequency range:                    

9 ~ 600 MHz

WE-SL2

Inductance: 

10 ~ 6500 µH

DCR: 

0.08 ~ 0.95 Ω

Rated current: 

0.4 ~ 1.6 A

Frequency range:                     0.01 ~ 600 MHz

WE-SL1

Inductance: 

10 ~ 330 µH

DCR: 

0.16 ~ 0.3 Ω

Rated current: 

300 mA

Frequency range:                    

9 ~ 600 MHz

Circuit Protection

WE-VD 

Operating Voltage: 

18 ~ 1465 V

DC

Diameters: 

5 ~ 20 mm

i

max

:  

0.1 ~ 10 kA

W

max

:  

0.7 ~ 496 J

Reference for UL/CSA/VDE

WE-VE/WE-VEA 

Operating Voltage: 

5 ~ 24 V

DC

Capacitance @ 1 MHz: 

0.2 ~ 120 pF

Size: 

0201 ~ 0805/0508 ~ 0612

WE-TVS 

V

RWM

: 

3.3 ~ 5 V

DC

C

typ

: 

0.25 ~ 55 pF

Channels: 

2 ~ 6 (+VDD)

Uni/Bidirectional, , Rail-to-Rail

WE-VS

Operating voltage:  

5.5 ~ 85 V

DC

i

max

:  

20 ~ 1200 A

W

max

:  

0.02 ~ 12 J

C

typ

:  

70 ~ 13600 pF

Size:  

0402 ~ 2220

WE-VE femtoF

Operating Voltage: 

 6 ~ 26 V

DC

C

typ

:  

0.05 pF

Size:  

0402 ~ 0603

WE-FLEX

+

suitable for all switch mode power supply 
topologies like: Buck-Converter, Boost-Converter, 
SEPIC-Converter, Flyback-Converter, 
Forward-Converter and Push-Pull-Converter

WE-PoE

suitable for Power over Ethernet ICs

WE-PoE

+

Compliant with the 30W PoE

+

 objectives of 

IEEE802.3at

Suitable for PoE

+

 powered devices

WE-FB

for LT3573 and LT3751 of Linear Technology

WE-UNIT

for Switch Mode Power Supply 
especially designed for ICs of Power 
Integrations, STMicroelectronics & NXP

WE-PFC

for active power factor correction and lighting 
applications, recommended for the ICs 
NCP1606B & MC33262 of ON Semiconductor 

WE-CST

for Switch Mode Power Supply and 
AC current detection

Power Transformers

WE-FLEX

suitable for all switch mode power supply 
topologies like: Buck-Converter, Boost-Converter, 
SEPIC-Converter, Flyback-Converter, 
Forward-Converter and Push-Pull-Converter

The pictures are linked to the product page.

www.we-online.com

EMC Components

Power Magnetics

Signal & Communications

Power Inductors

Product Training 

Improve yourself: Use our new product training mo-
dules for free. Learn more about how to solve EMI 
issues with common mode chokes, the key features 
of high current and flatwire power inductors and 
their areas of application.

Simulation Software

Simulation tool for the easy selection 
of suitable switching regulators.

Components Libraries

Component libraries for Eagle and Altium Designer

TOOLBOX

www.we-online.com/toolbox

Designer Toolbox 

for purchasers and engineers

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Assembly Technique

Signal & Communications

Power Magnetics

Connectors

Switches

Passive & Electromechanical 

Components

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