2020

Inductor Catalog

RF

 

|

 

Power 

Automotive 

|

 

Industrial 

|

 Commercial

50

45

40

35

30

25

20

15

10

5

0

0

.001

.01

.1

1

10

100

1K

10K

100K

Molded

Wirewound, Drum Core

Axial, Shielded, Toroid

Air Coil , Multilayer, RF Wirewound

1M

Thin Film

70

65

60

55

Inductance (µH)

Rated Current (A) 

10M

SMD

THROUGH-HOLE

MOLDED

MULTILAYER

WIREWOUND

SHIELDED

AXIAL

DRUM CORE

TOROIDAL

ASPIAIG-F

AMPLA

AMDLA

AMELA 

ASPIAIG-FLR

ASPIAIG-Q

ASPIAIG-QLR

AIMC

AIML

ASMPL

ASMPH

ASMPM

ASPI

ASPI

ASPIAIG-S

AIAM

AIAP

AIAS

AIRD

AISR

AIUR

ATCA

Abracon Power Inductor Families

AIR COIL

RF WIREWOUND

THIN FILM

AIAC

AISC

AISM

ATFC

Abracon RF Inductor Families

INDUCTOR CHART

Inductor Chart ..................................................................................................................... 3
Automotive Inductors ........................................................................................................4

Metal Alloy Inductors ............................................................................................................................................5
Resin Shielded Inductors ..................................................................................................................................... 7

SMD Power Inductors ........................................................................................................8

Multilayer Inductors ...............................................................................................................................................9
Plastic Molded Inductors ......................................................................................................................................11
Metal Alloy Inductors ...........................................................................................................................................12
Resin Shielded Inductors ....................................................................................................................................15
Sleeve Shielded Inductors ..................................................................................................................................18
Unshielded Inductors ..........................................................................................................................................20

RF Inductors ....................................................................................................................... 21

Air Coil Inductors .................................................................................................................................................22
Multilayer Inductors .............................................................................................................................................23
RF Wirewound Inductors ....................................................................................................................................24
Thin Film Inductors ..............................................................................................................................................26

Leaded Power Inductors .................................................................................................27

Axial Inductors ......................................................................................................................................................28
Drum Core Inductors...........................................................................................................................................29
Toroid Inductors ....................................................................................................................................................31

Inductor Types ...................................................................................................................32

5G/4G/LTE ANTENNAS

LEARN  MORE AT

A B R A C O N . C O M

Abracon is a leading global manufacturer of passive and electromechanical timing, synchronization, 

power, connectivity and RF solutions. Abracon helps engineers transform their ideas into products that 

meet the opportunities of tomorrow through a broad portfolio of quartz crystals, crystal and MEMS 

oscillators, real time clocks, power inductors, IoT antennas and more.

About Abracon

Automotive

4

5

SERIES

SERIES 

INDUCTANCE 

(μH)

SERIES CURRENT 

RATING (A)

SERIES DCR 

(m

Ω

)

 RATED 

CURRENT 

(A)

DCR

(m

Ω

)

OPERATING

TEMPERATURE

DIMENSIONS 

(mm)

@ 1μH

L

W

H

Molded Flat Wire

ASPIAIG-F4020

0.1-2.2

5.6-18

2.4-38.7

9.6

14.6

-40°C to +125°C

4.1

4.1

1.9

ASPIAIG-FLR4020

0.47-4.7

3.5-12.5

6.8-57.2

8.0

11.7

-40°C to +125°C

4.1

4.1

1.9

ASPIAIG-Q4020

0.1-2.2

5.6-18

2.4-38.7

9.6

14.6

-55°C to +155°C

4.1

4.1

1.9

ASPIAIG-QLR4020

0.47-4.7

3.5-12.5

6.8-57.2

8.0

11.7

-55°C to +155°C

4.1

4.1

1.9

ASPIAIG-F5020

0.15-1.5

8.8-18.8

4.6-18.7

10.5

13.8

-40°C to +125°C

5.5

5.3

1.9

ASPIAIG-F5030

0.15-4.7

5.9-22.2

2.3-36.3

12.2

7.6

-40°C to +125°C

5.5

5.3

2.9

ASPIAIG-F6030

0.18-4.5

7-32

1.8-25.3

18.0

6.1

-40°C to +125°C

6.6

6.4

2.8

ASPIAIG-F6050

1.0-4.7

8-18

4.5-18.4

18.0

4.5

-40°C to +125°C

6.6

6.4

4.8

ASPIAIG-F7020

0.27-1

11-21

3.5-10.8

11.0

10.8

-40°C to +125°C

7.8

7.6

1.9

ASPIAIG-F7030

0.6-8.2

5.9-23

3.2-48.7

21.8

5.0

-40°C to +125°C

7.8

7.6

2.9

Molded Round Wire

AMDLA3010Q

0.15-10

0.9-8

12-430

2.8

48.0

-55°C to +125°C

3.4

3.0

1.0

AMDLA3020Q

0.22-10

1.3-10

10-260

5.0

30.0

-55°C to +125°C

3.4

3.0

2.0

AMDLA4010Q

0.22-10

1.1-11

12-312

4.2

42.0

-55°C to +125°C

4.4

4.0

1.0

AMDLA4012Q

0.33-4.7

2.2-10

14.5-143

5.2

43.0

-55°C to +125°C

4.4

4.0

1.2

AMDLA4020Q

0.12-22

1.2-15

4.2-320

6.5

20.0

-55°C to +125°C

4.4

4.0

2.0

METAL ALLOY INDUCTORS

AUTOMOTIVE

INDUCTORS

The automotive grade metal alloy inductors support AEC-Q200 grade 0 or 1 (-55°C to +155°C or -40°C 

to +125°C), PPAP level 3 and TS-16949 qualified manufacturing. A molded inductor is a coil pressed 

and encapsulated by different types of iron powder mixes. In contrast to traditional wirewound 

inductors, the molded inductor’s magnetic powder material is pressed into a mold around a coil of 

wire. Molded inductors offer better efficiency, shielding, and power density when compared to all other 

inductors. A key factor contributing to the increased performance is the complete encapsulation of 

the core, achieved by using the powder materials to fill in the air gaps around the coils of wire. The 

encapsulation and material selection provide for superior current capacity and efficiency. Additionally, 

most molded powders are a metal alloy mix as opposed to ferrite. This allows for much softer inductor 

saturation. 

MOLDED FLAT WIRE

MOLDED ROUND WIRE

APPLICATIONS 

•

 

Automotive

:

 in-dash infotainment system, ADAS, keyless entry, HID/LED exterior lighting (head/

tail lights), in-cabin lighting, stereo systems, HVAC controls, battery management systems, on-board 
diagnostic systems, distance controllers - LIDAR/radar systems, seat heating/cooling

AUTOMOTIVE 

INDUCTORS 

• Metal Alloy
• Resin Shielded

Automotive

Automotive

6

7

SERIES

SERIES 

INDUCTANCE 

(μH)

SERIES CURRENT 

RATING (A)

SERIES DCR 

(m

Ω

)

 RATED 

CURRENT 

(A)

DCR

(m

Ω

)

OPERATING

TEMPERATURE

DIMENSIONS 

(mm)

@ 1μH

L

W

H

8 Sided Resin Shielded

ASPIAIG-S4035

1.0-150

0.5-4.5

24-2280

4.5

24.0

-40°C to +125°C

4.0

4.0

3.5

ASPIAIG-S6055

3.3-330

0.6-4.6

26-1603

4.6

26.0

-40°C to +125°C

6.0

6.0

5.5

ASPIAIG-S8050

1.0-470

0.6-7.2

10-1540

7.2

10.0

-40°C to +125°C

8.0

8.0

5.0

SERIES

SERIES 

INDUCTANCE 

(μH)

SERIES CURRENT 

RATING (A)

SERIES DCR 

(m

Ω

)

 RATED 

CURRENT 

(A)

DCR

(m

Ω

)

OPERATING

TEMPERATURE

DIMENSIONS 

(mm)

@ 1μH

L

W

H

Molded Round Wire

AMPLA4012Q

0.1-22

0.8-11.5

5.5-1050

4.0

47.0

-55°C to +125°C

4.5

4.1

1.2

AMPLA4020Q

0.1-22

1.2-13.5

4.0-500

5.0

27.0

-55°C to +125°C

4.5

4.1

2.0

AMDLA4530Q

0.1-4.7

4-32

2.1-52

8.5

13.8

-55°C to +155°C

4.9

4.7

3.0

AMPLA5030Q

0.15-22

1.7-18

2.7-250

7.0

14.0

-55°C to +125°C

5.7

5.2

3.0

AMPLA7012Q

0.1-10

1.8-16

4.0-290

6.0

30.0

-55°C to +125°C

7.0

6.6

1.2

AMDLA7030Q

0.15-33

1.8-25

2.1-258

11.0

7.4

-55°C to +155°C

7.3

6.6

3.0

AMPLA7030Q

0.1-47

1.75-32.5

1.7-363

11.0

10.0

-55°C to +125°C

7.3

6.6

3.0

AMPLA7050Q

0.4-22

2.5-23

3.7-170

15.0

6.5

-55°C to +125°C

7.3

6.6

5.0

ASPIAIG-F1040

0.15-82

1.5-43

0.6-320

18.0

3.3

-55°C to +125°C

11.0

10.0

3.8

AMDLA1004Q

0.15-100

2-44

0.6-310

20.0

3.3

-55°C to +155°C

11.0

10.0

4.0

ASPIAIG-F1265

0.15-47

6.5-55

0.6-90

30.0

2.3

-55°C to +125°C

13.5

12.5

6.2

AMDLA1306Q

0.1-100

3.8-60

0.25-161

29.0

1.8

-55°C to +155°C

13.5

12.6

6.5

AMPLA1707Q

0.45-100

5.3-62

0.96-118

52.0

2.0

-55°C to +125°C

17.6

16.9

7.0

AMDLA1707Q

0.47-82

6.5-60

0.9-83

46.0

1.3

-55°C to +155°C

17.8

16.9

6.7

AMDLA2213Q

1.5-100

7.5-48

1.15-40

48.0

1.2

-55°C to +155°C

23.5 22.0 13.0

RESIN SHIELDED INDUCTORS

METAL ALLOY INDUCTORS

The automotive grade resin shielded inductors support AEC-Q200 grade 0 or 1 (-55°C to +155°C 

or -40°C to +125°C), PPAP level 3 and TS-16949 qualified manufacturing. Resin shielded inductors 

are classified as a partially shielded SMD inductor. A magnetic liquid coats the wirewound wrapped 

magnetic core. The magnetic liquid is then hardened during a special baking process. Resin shielded 

inductors are in between shielded and unshielded wirewound inductors in terms of performance 

and cost. Resin shielded inductors are a good choice for automotive, industrial, medical, and IoT 

applications requiring compact power conversion with tight budget constraints.

The automotive grade metal alloy inductors support AEC-Q200 grade 0 or 1 (-55°C to +155°C or -40°C 

to +125°C), PPAP level 3 and TS-16949 qualified manufacturing. 

APPLICATIONS (CONT.)

•

 

Automotive

: 

transmission shifting controllers, drive motors (automated mirrors, windshield wiper 

controller, window), oil/fuel/water pumps, in-car charging

•

 

Consumer electronics

:

 drones, electronic cigarettes, digital cameras

•

 

Communications

:

 base stations, set top boxes, modems, servers, routers

•

 

Healthcare

:

 wearable medical monitoring equipment, respiratory ventilators, surgical machines, electric 

wheelchairs, exercise equipment, equipment sterilizers, EKG machines

•

 

Industrial

:

 smart meters, LED drivers, manufacturing line robotics, fuel/oil/water pumps, motor 

controllers, machine/power tools, vending machines, solar inverters, heavy construction equipment, 
asset tracking

•

 

IoT

:

 industrial IoT, wearables, portable devices, switch mode power supplies (low and high power), 

Bluetooth speakers, smart home devices/control units, security cameras

8 SIDED RESIN SHIELDED

APPLICATIONS 

•

 

Audio/Video

:

 stereos/speakers, televisions, gaming consoles, virtual reality systems, projectors, 

amplifiers 

•

 

Consumer electronics

:

 docking stations, drones, credit card payment systems, E-cigarettes, digital 

cameras, robotic vacuums, cell phones    

•

 

Communications

:

 base stations, set top boxes, modems, servers, routers

•

 

Healthcare

:

 wearable medical monitoring equipment (blood sugar – glucose, thermometers, finger 

pulse oximeters), respiratory ventilators, surgical machines, electric wheelchairs, exercise equipment, 
equipment sterilizer, EKG machines, LED lighting, rotary mixing machines, vacuum pumps, CT scanners, 
x-ray machines, electric beds

•

 

Industrial

:

 agricultural/utility/resource monitoring (smart meters), LED drivers, manufacturing line 

robotics, fuel/oil/water pumps, motor controllers, machine/power tools, vending machines, solar 
inverters, heavy construction equipment, asset tracking

•

 

IoT

:

 industrial IoT, wearables, portable devices, switch mode power supplies (low and high power), 

Bluetooth speakers, smart home devices/control units, security cameras 

MOLDED FLAT WIRE

MOLDED ROUND WIRE

SMD Power Inductors

8

9

SERIES

SERIES 

INDUCTANCE 

(μH)

SERIES CURRENT 

RATING (A)

SERIES DCR 

(m

Ω

)

 RATED 

CURRENT 

(A)

DCR

(m

Ω

)

OPERATING

TEMPERATURE

DIMENSIONS 

(mm)

@ 1μH

L

W

H

Ferrite Multilayer

AIML-0402

1-2.7

0.01-0.015

900-2000

0.02

900

-55°C to +125°C

1.0

0.5

0.5

ASMPL-0603

0.22-1

0.8-1.2

150-400

0.80

400

-40°C to +85°C

1.6

0.8

0.5

AIML-0603HC

3.3-4.7

0.06-0.08

400-500

0.08

400

-55°C to +125°C

1.6

0.8

0.8

AIML-0603

0.068-27

0.001-0.05

300-2750

0.03

600

-40°C to +85°C

1.6

0.8

0.8

ASMPH-0603

0.22-4.7

0.065-1.25

130-500

0.80

250

-55°C to +125°C

1.6

0.8

0.8

ASMCI-0603

0.1-10

0.05-0.7

140-900

0.19

200

-40°C to +85°C

1.6

0.8

0.8

ASMPL-0805

0.22-2.2

0.35-1.35

88-400

0.70

238

-40°C to +85°C

2.0

1.3

0.5

AIML-0805

0.047-39

0.004-0.3

200-1500

0.05

400

-55°C to +125°C

2.0

1.3

0.9

SMD POWER 

INDUCTORS

SMD POWER 
INDUCTORS 

• Multilayer
• Plastic Molded
• Metal Alloy
• Resin Shielded
• Sleeve Shielded
• Unshielded

MULTILAYER INDUCTORS

The name multilayer references the construction process of the inductor where layers of ferrite 

materials are laminated together. Lamination, terminal finish and conductive patterns can vary to 

optimize for self-resonant frequency (SRF), Q values and DCR specifications. In power applications, the 

multilayer inductor is used for power conversion in miniaturized devices.

FERRITE MULTILAYER

APPLICATIONS 

•

 

Automotive

:

 tire pressure monitoring systems, electronic throttle control systems (ETC) 

•

 

Consumer electronics

:

 Bluetooth speakers, E-cigarettes, drones, portable gaming consoles, digital 

cameras, handheld GPS devices 

•

 

Healthcare

:

 wearable medical monitoring equipment (blood sugar – glucose, thermometers, finger 

pulse/oximeters)

•

 

Wearables

:

 smart watches, fitness trackers, smart diving watches, exercise wearables 

SMD Power Inductors

SMD Power Inductors

10

11

SERIES

SERIES 

INDUCTANCE 

(μH)

SERIES CURRENT 

RATING (A)

SERIES DCR 

(m

Ω

)

 RATED 

CURRENT 

(A)

DCR

(m

Ω

)

OPERATING

TEMPERATURE

DIMENSIONS 

(mm)

@ 1μH

L

W

H

Plastic Molded Wirewound

AISM-1008

0.01-100

0.06-0.530

260-21000

0.2

1100

-40°C to +105°C

2.5

2.0

1.8

AISM-1210

0.01-330

0.04-0.45

130-34000

0.4

700

-40°C to +85°C

3.2

2.5

2.2

AISM-1812H

1-330

0.09-1.05

110-13000

1.1

110

-40°C to +125°C

4.5

3.2

3.2

AISM-1812

0.1-820

0.03-0.8

200-43000

0.5

500

-40°C to +85°C

4.8

3.5

3.5

AISM-2220

1-1000

0.085-1.8

30-15000

1.8

30

-25°C to +85°C

5.9

5.3

5.3

SERIES

SERIES 

INDUCTANCE 

(μH)

SERIES CURRENT 

RATING (A)

SERIES DCR 

(m

Ω

)

 RATED 

CURRENT 

(A)

DCR

(m

Ω

)

OPERATING

TEMPERATURE

DIMENSIONS 

(mm)

@ 1μH

L

W

H

Ferrite Multilayer

ASMCI-0805

0.1-10

0.06-1

70-500

0.30

200

-40°C to +85°C

2.0

1.3

1.3

ASMPH-0806

0.47-4.7

0.22-1.6

80-140

1.20

90

-40°C to +85°C

2.0

1.6

0.9

AIML-1008HC

1-4.7

1.1-1.6

85-120

1.60

85

-40°C to +85°C

2.5

2.0

0.9

ASMPH-1008

0.47-4.7

0.32-1.5

40-110

1.40

60

-55°C to +125°C

2.5

2.0

0.9

AIML-1206

0.047-47

0.005-0.3

150-3400

0.10

400

-40°C to +85°C

3.2

1.6

1.1

Metal Alloy Multilayer

AIML-0805HC

1-10

0.8-1.3

110-300

1.30

110

-40°C to +85°C

2.0

1.3

0.9

ASMPH-0805

0.47-4.7

0.28-1.2

80-250

1.15

110

-40°C to +85°C

2.0

1.3

0.9

ASMPM-0806

0.47-4.7

0.95-3.1

40-360

2.20

70

-40°C to +125°C

2.0

1.6

1.0

MULTILAYER INDUCTORS

FERRITE MULTILAYER

METAL ALLOY MULTILAYER

The name multilayer references the construction process of the inductor where layers of ferrite 

materials are laminated together. Lamination, terminal finish and conductive patterns can vary to 

optimize for self-resonant frequency (SRF), Q values and DCR specifications. In power applications, the 

multilayer inductor is used for power conversion in miniaturized devices.

APPLICATIONS 

•

 

Automotive

:

 tire pressure monitoring systems, electronic throttle control systems (ETC) 

•

 

Consumer electronics

:

 Bluetooth speakers, E-cigarettes, drones, portable gaming consoles, digital 

cameras, handheld GPS devices 

•

 

Healthcare

:

 wearable medical monitoring equipment (blood sugar – glucose, thermometers, finger 

pulse/oximeters)

•

 

Wearables

:

 smart watches, fitness trackers, smart diving watches, exercise wearables 

PLASTIC MOLDED INDUCTORS

A plastic molded inductor is a wirewound coil encapsulated by a plastic mold. In contrast to traditional 

wirewound inductors, the molded inductor’s plastic material is pressed into a mold around a coil of 

wire. Plastic molded inductors are a cost competitive alternative to the mixed metal alloy molded 

inductors. Additionally, they offer superior current capacity and efficiency when compared to 

unshielded inductors.

MOLDED PLASTIC WIREWOUND

APPLICATIONS 

•

 

Audio/Video

:

 speakers, televisions, gaming consoles, virtual reality systems, projectors 

•

 

Consumer electronics

:

 drones, E-cigarettes, digital cameras, robotic vacuums, cell phones, tablets 

•

 

Communications

:

 base stations, set top boxes, modems, servers, routers

•

 

Healthcare

: 

wearable medical monitoring equipment (blood sugar – glucose, thermometers, finger 

pulse/oximeters), respiratory ventilators, surgical machines, electric wheelchairs, exercise equipment, 
equipment sterilizer, EKG machines, LED lighting, rotary mixing machines, vacuum pumps, CT scanners, 
x-ray machines, electric beds

•

 

Industrial

:

 agricultural/utility/resource monitoring (smart meters), LED drivers, manufacturing line 

robotics, fuel/oil/water pumps, motor controllers, machine/power tools, vending machines, solar 
inverters, drones, heavy construction equipment, asset tracking

•

 

IoT

:

 industrial IoT, wearables, portable devices, switch mode power supplies (low and high power), 

Bluetooth speakers, smart home devices/control units, security cameras 

SMD Power Inductors

SMD Power Inductors

12

13

SERIES

SERIES 

INDUCTANCE 

(μH)

SERIES CURRENT 

RATING (A)

SERIES DCR 

(m

Ω

)

 RATED 

CURRENT 

(A)

DCR

(m

Ω

)

OPERATING

TEMPERATURE

DIMENSIONS 

(mm)

@ 1μH

L

W

H

Molded Round Wire

AMDLA4530S

0.1-4.7

4-32

2.1-52

8.5

13.8

-55°C to +155°C

4.9

4.7

3.0

ASPI-0520LR

1-5.6

3.5-7.5

18.5-75

7.5

18.5

-55°C to +125°C

5.6

5.2

2.0

ASPI-0530LR

1.5-5.6

4-7

20-65

7.0

20.0

-55°C to +125°C

5.6

5.2

3.0

ASPI-0530HI

1-2.2

5.5-7

14-35

7.0

14.0

-55°C to +125°C

5.6

5.2

3.0

AMPLA5030S

0.15-22

1.7-18

2.7-250

7.0

14.0

-55°C to +125°C

5.7

5.2

3.0

AMPLA7012S

0.1-10

1.8-16

4-290

6.0

30.0

-55°C to +125°C

7.0

6.6

1.2

ASPI-0630HI

1-10

3-11

10-105

11.0

10.0

-55°C to +125°C

7.2

6.7

3.0

ASPI-0630LR

0.47-22

2.5-18

4.1-167

12.0

9.0

-55°C to +125°C

7.2

6.7

3.0

AMDLA7030S

0.15-33

1.8-25

2.1-258

11.0

7.4

-55°C to +155°C

7.3

6.6

3.0

AMPLA7030S

0.1-47

1.75-32.5

1.7-363

11.0

10.0

-55°C to +125°C

7.3

6.6

3.0

AMPLA7050S

0.4-22

2.5-23

3.7-170

15.0

6.5

-55°C to +125°C

7.3

6.6

5.0

SERIES

SERIES 

INDUCTANCE 

(μH)

SERIES CURRENT 

RATING (A)

SERIES DCR 

(m

Ω

)

 RATED 

CURRENT 

(A)

DCR

(m

Ω

)

OPERATING

TEMPERATURE

DIMENSIONS 

(mm)

@ 1μH

L

W

H

Molded Flat Wire

AMELA2010S

0.22-2.2

2-6.5

17-105

3.4

53.0

-55°C to +125°C

2.5

2.0

1.0

AMELA2012S

0.22-2.2

2.4-8.5

13-90

3.7

45.0

-55°C to +125°C

2.5

2.0

1.2

Molded Round Wire

ASPI-3012HI

0.22-220

0.23-3.5

19-8000

2.6

42.0

-40°C to +85°C

3.0

3.0

1.3

AMDLA3010S

0.15-10

0.9-8

12-430

2.8

48.0

-55°C to +155°C

3.4

3.0

1.0

AMDLA3020S

0.22-10

1.3-10

10-260

5.0

30.0

-55°C to +155°C

3.4

3.0

2.0

ASPI-4020HI

0.47-6.8

2.4-7.5

14-175

6.0

27.0

-55°C to +125°C

4.2

4.4

2.0

AMDLA4010S

0.22-10

1.1-11

12-312

4.2

42.0

-55°C to +155°C

4.4

4.0

1.0

AMDLA4012S

0.33-4.7

2.2-10

14.5-143

5.2

43.0

-55°C to +155°C

4.4

4.0

1.2

AMDLA4020S

0.12-22

1.2-15

4.2-320

6.5

20.0

-55°C to +155°C

4.4

4.0

2.0

AMPLA4012S

0.1-22

0.8-11.5

5.5-1050

4.0

47.0

-55°C to +125°C

4.5

4.1

1.2

AMPLA4020S

0.1-22

1.2-13.5

4-500

5.0

27.0

-55°C to +125°C

4.5

4.1

2.0

METAL ALLOY INDUCTORS

APPLICATIONS (CONT.)

•

 

Communications

:

 base stations, set top boxes, modems, servers, routers

•

 

Healthcare

:

 wearable medical monitoring equipment (blood sugar – glucose, thermometers, finger 

pulse oximeters), respiratory ventilators, surgical machines, electric wheelchairs, exercise equipment, 
equipment sterilizer, EKG machines, LED lighting, rotary mixing machines, vacuum pumps, CT scanners, 
x-ray machines, electric beds

•

 

Industrial

:

 agricultural/utility/resource monitoring (smart meters), LED drivers, manufacturing line 

robotics, fuel/oil/water pumps, motor controllers, machine/power tools, vending machines, solar 
inverters, drones, heavy construction equipment, asset tracking

•

 

IoT

:

 industrial IoT, wearables, portable devices, switch mode power supplies (low and high power), 

Bluetooth speakers, smart home devices/control units, security cameras

METAL ALLOY INDUCTORS

A molded inductor is a coil pressed and encapsulated by different types of iron powder mixes. In 

contrast to traditional wirewound inductors, the molded inductor’s magnetic powder material is 

pressed into a mold around a coil of wire. Molded inductors offer better efficiency, shielding, and 

power density when compared to all other inductors. A key factor contributing to the increased 

performance is the complete encapsulation of the core, achieved by using the powder materials to fill 

in the air gaps around the coils of wire. The encapsulation and material selection provide for superior 

current capacity and efficiency. Additionally, most molded powders are a metal alloy mix as opposed to 

ferrite. This allows for much softer inductor saturation. 

APPLICATIONS 

•

 

Audio/Video

:

 speakers, televisions, gaming consoles, virtual reality systems, projectors 

•

 

Consumer electronics

:

 drones, E-cigarettes, digital cameras, robotic vacuums, cell phones, tablets

MOLDED FLAT WIRE

MOLDED ROUND WIRE

MOLDED FLAT WIRE

MOLDED ROUND WIRE

SMD Power Inductors

SMD Power Inductors

14

15

SERIES

SERIES 

INDUCTANCE 

(μH)

SERIES CURRENT 

RATING (A)

SERIES DCR 

(m

Ω

)

 RATED 

CURRENT 

(A)

DCR

(m

Ω

)

OPERATING

TEMPERATURE

DIMENSIONS 

(mm)

@ 1μH

L

W

H

Square Resin Shielded

ASPI-U201610

0.12-4.7

1.25-5.6

15-288

2.6

60

-40°C to +125°C

2.0

1.6

1.0

ASPI-U252010

0.16-4.7

1.4-5

20-240

3.1

50

-40°C to +125°C

2.5

2.0

1.0

ASPI-M3015

0.47-10

1.5-5

27-270

3.8

42

-40°C to +125°C

3.0

3.0

1.5

ASPI-0425

1-220

0.2-3

12-2300

3.0

12

-25°C to +120°C

4.0

4.0

2.5

ASPI-0615FS

0.5-47

0.8-5.2

9-370

4.1

12

-25°C to +120°C

6.0

6.0

2.0

ASPI-0628

0.9-100

0.66-4.6

13-600

4.6

13

-25°C to +120°C

6.0

6.0

2.8

Round Resin Shielded

ASPI-0645

1-220

0.5-6.5

10-920

6.5

10

-25°C to +120°C

6.0

6.0

4.5

ASPI-0840

0.5-220

0.75-8

6-630

7.9

7

-40°C to +85°C

8.0

8.0

4.0

8 Sided Resin Shielded

ASPI-0310FS

1-47

0.28-2.3

50-1600

2.3

50

-25°C to +120°C

3.0

3.0

1.0

ASPI-0410FS

1-22

0.36-1.8

100-870

1.8

100

-40°C to +85°C

4.0

4.0

1.0

ASPI-0412FS

0.82-100

0.25-1.65

65-2873

1.7

65

-25°C to +125°C

4.0

4.0

1.2

SERIES

SERIES 

INDUCTANCE 

(μH)

SERIES CURRENT 

RATING (A)

SERIES DCR 

(m

Ω

)

 RATED 

CURRENT 

(A)

DCR

(m

Ω

)

OPERATING

TEMPERATURE

DIMENSIONS 

(mm)

@ 1μH

L

W

H

Molded Round Wire

ASPI-7318

0.1-22

2-30

1.7-230

11.0

10.0

-55°C to +125°C

7.3

6.8

3.0

AMDLA1004S

0.15-100

2-44

0.6-310

20.0

3.3

-55°C to +155°C

11.0

10.0

4.0

AMPLA1004S

0.15-68

2-43

0.6-240

18.0

3.3

-55°C to +125°C

11.0

10.0

4.0

ASPI-1040AHI

0.16-10

7.5-40

0.65-30

18.0

3.3

-55°C to +125°C

11.2

10.0

4.0

ASPI-1040HI

0.22-68

2.5-35

1-195

19.0

3.3

-55°C to +125°C

11.5

10.0

4.0

ASPI-1367

0.1-10

10-60

0.5-18.5

0.0

1.5

-40°C to +125°C

12.9

14.0

6.7

AMPLA1306S

0.15-100

2.5-55

0.6-200

30.0

2.3

-55°C to +125°C

13.5

12.5

6.5

AMDLA1306S

0.1-100

3.8-60

0.25-161

29.0

1.8

-55°C to +155°C

13.5

12.6

6.5

AMPLA1707S

0.45-100

5.3-62

0.96-118

52.0

2.0

-55°C to +125°C

17.6

16.9

7.0

AMDLA1707S

0.47-82

6.5-60

0.9-83

46.0

1.3

-55°C to +155°C

17.8

16.9

6.7

AMDLA2213S

1.5-100

7.5-48

1.15-40

48.0

1.2

-55°C to +155°C

23.5 22.0 13.0

RESIN SHIELDED INDUCTORS

Resin shielded inductors are classified as a partially shielded SMD inductor. A magnetic liquid coats 

the wirewound wrapped magnetic core. The magnetic liquid is then hardened during a special baking 

process. Resin shielded inductors are in between shielded and unshielded wirewound inductors in 

terms of performance and cost. Resin shielded inductors are a good choice for applications requiring 

compact power conversion with tight budget constraints.

APPLICATIONS 

•

 

Audio/Video

:

 speakers, televisions, gaming consoles, virtual reality systems, projectors, amplifiers, 

stereos 

•

 

Consumer electronics

:

 docking stations, drones, smart home devices/control units, credit card 

payment systems, E-cigarettes, digital cameras, robotic vacuums, cell phones   

METAL ALLOY INDUCTORS

APPLICATIONS 

•

 

Audio/Video

:

 speakers, televisions, gaming consoles, virtual reality systems, projectors 

•

 

Consumer electronics

:

 drones, E-cigarettes, digital cameras, robotic vacuums, cell phones, tablets 

•

 

Communications

:

 base stations, set top boxes, modems, servers, routers

•

 

Industrial

:

 agricultural/utility/resource monitoring (smart meters), LED drivers, manufacturing line 

robotics, fuel/oil/water pumps, motor controllers, machine/power tools, vending machines, solar 
inverters, drones, heavy construction equipment, asset tracking

•

 

IoT

:

 industrial IoT, wearables, portable devices, switch mode power supplies (low and high power), 

Bluetooth speakers, smart home devices/control units, security cameras 

•

 

Healthcare

:

 wearable medical monitoring equipment (blood sugar – glucose, thermometers, finger 

pulse oximeters), respiratory ventilators, surgical machines, electric wheelchairs, exercise equipment, 
equipment sterilizer, EKG machines, LED lighting, rotary mixing machines, vacuum pumps, CT scanners, 
x-ray machines, electric beds

SQUARE RESIN SHIELDED

ROUND RESIN SHIELDED

8 SIDED RESIN SHIELDED

MOLDED FLAT WIRE

MOLDED ROUND WIRE

12 SIDED RESIN SHIELDED

SMD Power Inductors

SMD Power Inductors

16

17

SERIES

SERIES 

INDUCTANCE 

(μH)

SERIES CURRENT 

RATING (A)

SERIES DCR 

(m

Ω

)

 RATED 

CURRENT 

(A)

DCR

(m

Ω

)

OPERATING

TEMPERATURE

DIMENSIONS 

(mm)

@ 1μH

L

W

H

12 Sided Resin Shielded

ASPI-2512

0.47-10

0.59-2.15

47-630

1.7

73

-25°C to +120°C

2.5

2.0

1.2

ASPI-M2512

0.24-10

1-4.1

23-480

3.0

48

-40°C to +125°C

2.5

2.0

1.2

ASPI-2515

0.47-10

0.75-2.8

35-445

2.2

49

-25°C to +120°C

2.5

2.0

1.2

ASPI-0312FS

1-47

0.25-1.5

50-1450

1.5

50

-25°C to +120°C

3.0

3.0

1.2

ASPI-3012S

0.82-100

0.17-2.22

30-2860

1.9

40

-40°C to +125°C

3.0

3.0

1.2

ASPI-0315FS

1-100

0.25-2.3

28-2100

2.3

28

-25°C to +120°C

3.0

3.0

1.5

ASPI-0418FS

0.82-220

0.28-4

16-2960

3.7

19

-25°C to +120°C

4.0

4.0

1.8

ASPI-4020S

1-100

0.31-2.15

29-1550

2.2

29

-40°C to +125°C

4.0

4.0

2.0

ASPI-4030S

0.91-120

0.42-4.15

13-1350

4.2

14

-40°C to +125°C

4.0

4.0

3.0

ASPI-8040S

0.82-330

0.64-6.3

10-1156

6.3

10

-40°C to +125°C

8.0

8.0

4.2

SERIES

SERIES 

INDUCTANCE 

(μH)

SERIES CURRENT 

RATING (A)

SERIES DCR 

(m

Ω

)

 RATED 

CURRENT 

(A)

DCR

(m

Ω

)

OPERATING

TEMPERATURE

DIMENSIONS 

(mm)

@ 1μH

L

W

H

8 Sided Resin Shielded

ASPI-0520

1-33

0.9-3.6

21-430

3.6

21

-25°C to +120°C

5.0

5.0

2.0

ASPI-0540

1.5-100

0.65-3.6

20-620

3.6

20

-25°C to +120°C

5.0

5.0

4.0

ASPI-5040S

1.5-47

0.9-3.6

24-372

3.6

24

-25°C to +120°C

5.0

5.0

4.0

ASPI-0612FS

2.5-47

0.46-1.73

90-1050

1.7

90

-25°C to +120°C

6.0

6.0

1.2

ASPI-6045S

0.8-330

0.57-5.9

8-1700

5.1

14

-40°C to +125°C

6.0

6.0

4.5

12 Sided Resin Shielded

ASPI-2010HC

0.24-10

0.65-3

40-826

2.0

90

-40°C to +125°C

2.0

1.6

1.0

ASPI-2010

0.47-6.8

0.58-2.6

59-816

1.6

114

-40°C to +125°C

2.0

1.6

1.0

ASPI-2012

0.16-33

0.33-2.75

31-2160

1.7

88

-40°C to +125°C

2.0

2.0

1.2

ASPI-2410

0.68-22

0.4-2.5

60-1470

1.9

70

-25°C to +120°C

2.4

2.4

1.0

ASPI-2510

0.47-10

0.56-2.5

38-712

1.8

70

-25°C to +120°C

2.5

2.0

1.0

RESIN SHIELDED INDUCTORS

Resin shielded inductors are classified as a partially shielded SMD inductor. A magnetic liquid coats 

the wirewound wrapped magnetic core. The magnetic liquid is then hardened during a special baking 

process. Resin shielded inductors are in between shielded and unshielded wirewound inductors in 

terms of performance and cost. Resin shielded inductors are a good choice for applications requiring 

compact power conversion with tight budget constraints.

APPLICATIONS (CONT.)

•

 

Industrial

:

 agricultural/utility/resource monitoring (smart meters), LED drivers, manufacturing line 

robotics, fuel/oil/water pumps, motor controllers, machine/power tools, vending machines, solar 
inverters, drones, heavy construction equipment, asset tracking

•

 

IoT

:

 industrial IoT, wearables, portable devices, switch mode power supplies (low and high power), 

Bluetooth speakers, smart home devices/control units, security cameras

RESIN SHIELDED INDUCTORS

APPLICATIONS (CONT.)

•

 

Communications

:

 base stations, set top boxes, modems, servers, routers

•

 

Healthcare

:

 wearable medical monitoring equipment (blood sugar – glucose, thermometers, finger 

pulse/oximeters), respiratory ventilators, surgical machines, electric wheelchairs, exercise equipment, 
equipment sterilizer, EKG machines, LED lighting, rotary mixing machines, vacuum pumps, CT scanners, 
x-ray machines, electric beds

Resin shielded inductors are classified as a partially shielded SMD inductor. A magnetic liquid coats 

the wirewound wrapped magnetic core. The magnetic liquid is then hardened during a special baking 

process. Resin shielded inductors are in between shielded and unshielded wirewound inductors in 

terms of performance and cost. Resin shielded inductors are a good choice for applications requiring 

compact power conversion with tight budget constraints.

SQUARE RESIN SHIELDED

ROUND RESIN SHIELDED

8 SIDED RESIN SHIELDED

12 SIDED RESIN SHIELDED

SQUARE RESIN SHIELDED

ROUND RESIN SHIELDED

8 SIDED RESIN SHIELDED

12 SIDED RESIN SHIELDED

SMD Power Inductors

SMD Power Inductors

18

19

SERIES

SERIES 

INDUCTANCE 

(μH)

SERIES CURRENT 

RATING (A)

SERIES DCR 

(m

Ω

)

 RATED 

CURRENT 

(A)

DCR

(m

Ω

)

OPERATING

TEMPERATURE

DIMENSIONS 

(mm)

@ 1μH

L

W

H

Shielded Type B Wirewound

ASPI-6D38

3.3-330

0.39-3.5

20-1250

3.5

20.0

-40°C to +85°C

6.7

6.7

4.0

ASPI-8D28

2.5-100

0.78-5.4

27-895

5.4

27.0

-40°C to +85°C

8.3

8.3

3.0

Traditional Shielded Wirewound

ASPI-0403S

1-6800

0.04-3

40-25000

3.0

40.0

-40°C to +85°C

6.6

4.5

2.9

ASPI-0804TS

1-1000

0.14-8

25-1450

8.0

25.0

-40°C to +85°C

13.0

9.0

5.1

ASPI-1306S

10-1000

0.53-3.9

40-2010

3.9

40.0

-40°C to +85°C

18.5

15.2

7.6

Round Shielded Wirewound

ASPI-0602S

3-100

0.54-3

24-535

3.0

24.0

-40°C to +85°C

6.7

6.7

3.0

ASPI-0703C

3.3-1000

0.13-1.9

42-6960

1.9

42.0

-20°C to +85°C

7.0

7.0

3.2

Shielded Inductor with Resin Sealing

ASPI-0703S

2.2-1000

0.16-3.2

32-9440

3.2

32.0

-40°C to +85°C

7.3

7.3

3.2

ASPI-0704S

2.2-1000

0.18-5

28-6000

5.0

28.0

-40°C to +125°C

7.3

7.3

4.5

ASPI-1205S

1.3-1000

0.4-8

12-1530

8.0

12.0

-40°C to +85°C

12.0

12.0

6.0

ASPI-1207S

1-1000

0.7-14

6-1500

14.0

6.0

-40°C to +85°C

12.0

12.0

8.0

ASPI-125B

10-1000

0.4-4

25-1800

4.0

25.0

-30°C to +100°C

12.5

12.5

3.2

ASPI-1204S

3.3-330

0.5-6.5

15-990

6.5

15.0

-40°C to +85°C

12.5

12.5

4.5

SERIES

SERIES 

INDUCTANCE 

(μH)

SERIES CURRENT 

RATING (A)

SERIES DCR 

(m

Ω

)

 RATED 

CURRENT 

(A)

DCR

(m

Ω

)

OPERATING

TEMPERATURE

DIMENSIONS 

(mm)

@ 1μH

L

W

H

Shielded Type A Wirewound

ASPI-0428S

1.2-180

0.22-2.56

23.6-1540

2.6

23.6

-40°C to +85°C

4.7

4.7

3.0

ASPI-104S

0.56-1000

0.32-10

8-3250

10.0

8.0

-40°C to +125°C

10.4

10.4

4.0

Shielded Type B Wirewound

ASPI-2D09

1.2-10

0.28-0.8

97.5-537.5

0.8

97.5

-30°C to +100°C

3.2

3.2

1.0

ASPI-2D11

1.5-10

0.35-0.9

68-400

0.9

68.0

-30°C to +100°C

3.2

3.2

1.2

ASPI-2D14

1.5-12

0.62-1.8

63-394

1.8

63.0

-30°C to +100°C

3.2

3.2

1.6

ASPI-2D18L

2.2-47

0.2-0.85

41-660

0.9

41.0

-30°C to +100°C

3.2

3.2

2.0

ASPI-2D18H

1.7-15

0.7-1.85

44-345

1.9

44.0

-30°C to +100°C

3.2

3.2

2.0

ASPI-3D18

1.5-220

0.13-1.55

56-4770

1.6

56.0

-40°C to +85°C

3.8

3.8

1.8

ASPI-4D18

1-180

0.14-1.72

45-4000

1.7

45.0

-40°C to +85°C

4.7

4.7

2.0

ASPI-4D22

1.5-150

0.21-2

18-1350

2.0

18.0

-40°C to +85°C

4.7

4.7

2.4

ASPI-4D28

1.2-180

0.22-2.56

24-1540

2.6

24.0

-40°C to +85°C

4.7

4.7

3.0

ASPI-5D18

4.1-470

0.18-1.95

57-6560

2.0

57.0

-40°C to +85°C

5.7

5.7

2.0

ASPI-5D28

2.2-100

0.42-2.6

18-520

2.6

18.0

-40°C to +85°C

5.7

5.7

3.0

ASPI-6D28

1-330

0.35-6.15

12-2000

6.2

12.0

-40°C to +85°C

6.7

6.7

3.0

SHIELDED TYPE A

WIREWOUND

SHIELDED TYPE 

B WIREWOUND

TRADITIONAL 

SHIELDED

WIREWOUND

SLEEVE SHIELDED INDUCTORS

APPLICATIONS 

•

 

Consumer electronics

:

 docking stations, consumer electronics, drones, credit card payment systems, 

E-cigarettes, digital cameras, robotic vacuums, cell phones

•

 

Communications

:

 base stations, set top boxes, modems, servers, routers

•

 

Industrial

:

 agricultural/utility/resource monitoring (smart meters), LED drivers, manufacturing line 

robotics, fuel/oil/water pumps, motor controllers, machine/power tools, vending machines, solar 
inverters, drones, heavy construction equipment, asset tracking

•

 

IoT

:

 industrial IoT, wearables, portable devices, switch mode power supplies (low and high power), 

Bluetooth speakers, smart home devices/control units, security cameras

•

 

White Goods

:

 air conditioners, freezers/refrigerators, washers/dryers, microwave ovens, coffee 

machines

SLEEVE SHIELDED INDUCTORS

Shielded wirewound inductors come in several different forms of SMD inductors. This inductor 

type uses a magnetic sleeve to cover the wirewound wrapped magnetic core. This sleeve limits 

the radiation of magnetic fields resulting from induced current. Shielding is essential to meet FCC 

and other national emission standards as the industry moves to higher current requiring loads. The 

shielded sleeve is also important for reducing EMI and limiting the effect of power electronics on 

nearby sensitive circuitry. The shielded sleeve increases the performance of the inductor in more 

ways than one. Additional magnetic material around the wire adds higher current density and higher 

inductance per turn. This allows for a reduction in wire material per inductance. In turn, this decreases 

the DCR and increases the current handling capabilities. The shielded sleeve inductor delivers a higher 

performance than unshielded wirewound inductors at a slightly higher cost. Abracon’s Type A Sleeve 

Shielded inductors have electrodes sourced from two sides of the component and Type B Shielded 

inductors have electrodes sourced from opposite corners of the component. 

APPLICATIONS 

•

 

Audio/Video

:

 speakers, televisions, gaming consoles, virtual reality systems, projectors, amplifiers, 

stereos

ROUND SHIELDED 

WIREWOUND

SHIELDED INDUCTOR 

WITH RESIN SEALING

SHIELDED TYPE A

WIREWOUND

SHIELDED TYPE 

B WIREWOUND

TRADITIONAL 

SHIELDED

WIREWOUND

ROUND SHIELDED 

WIREWOUND

SHIELDED INDUCTOR 

WITH RESIN SEALING

SMD Power Inductors

20

21

SERIES

SERIES 

INDUCTANCE 

(μH)

SERIES CURRENT 

RATING (A)

SERIES DCR 

(m

Ω

)

 RATED 

CURRENT 

(A)

DCR

(m

Ω

)

OPERATING

TEMPERATURE

DIMENSIONS 

(mm)

@ 1μH

L

W

H

Traditional Unshielded Wirewound

ASPI-0810T

22-330

0.6-3

50-700

3.0

50.0

-40°C to +85°C

13.5

9.5

11.5

ASPI-0402T

1-1000

0.07-2.9

50-13800

2.9

50.0

-40°C to +85°C

6.6

4.5

2.9

ASPI-0802T

1-1000

0.1-5.15

24-8400

5.2

24.0

-40°C to +125°C

13.0

9.4

3.0

ASPI-0804T

0.68-2200

0.24-11

8-8200

9.0

9.0

-40°C to +125°C

13.0

9.4

5.2

ASPI-1306T

2.2-1000

0.56-15

14-1800

15.0

14.0

-40°C to +85°C

18.5

15.4

7.5

Round Unshielded Wirewound Inductor

ASPI-0403H

1-82

0.3-3.8

33-1200

3.8

33.0

-40°C to +125°C

4.5

4.0

3.2

ASPI-0503H

2.2-330

0.28-3.5

30-3200

3.5

30.0

-40°C to +125°C

5.8

5.2

3.2

ASPI-0703

10-330

0.28-1.44

81-1495

1.4

81.0

-40°C to +85°C

7.8

7.0

3.5

ASPI-0705

10-470

0.34-2.3

70-1960

2.3

70.0

-40°C to +85°C

7.8

7.0

5.0

ASPI-1004

10-560

0.32-2.38

53-1904

2.4

53.0

-40°C to +85°C

10.0

9.0

4.0

ASPI-1005

10-1000

0.22-2.6

60-2750

2.6

60.0

-40°C to +85°C

10.0

9.0

5.4

Square Unshielded Wirewound

AISC-1206H

0.045-100

0.045-1

27-8450

0.2

150.0

-40°C to +85°C

3.2

1.6

1.8

AISC-2220H

0.12-10000

0.05-6

9.8-140000

4.0

27.0

-40°C to +85°C

5.7

5.0

4.7

Shielded Inductor with Resin Sealing

ASPI-0302

4.7-390

0.115-1.03

230-7800

1.0

230.0

-40°C to +85°C

3.5

3.0

2.3

ASPI-0403

1-68

0.37-2.56

48.7-1117

2.6

48.7

-40°C to +85°C

4.5

4.0

3.2

ASPI-0504

4.7-1000

0.15-3.5

40-14400

3.5

40.0

-40°C to +85°C

5.8

5.2

4.5

UNSHIELDED INDUCTORS

Unshielded wirewound inductors consist of a copper wire wrapped around an SMD magnetic core. 

This inductor type does not include added shielding properties or increased inductance of added 

magnetic material around the wire. For this reason, the performance is lower when compared 

to shielded wirewound inductors. They offer an affordable option for general power conversion 

applications. 

SQUARE UNSHIELDED 

WIREWOUND

ROUND UNSHIELDED WIREWOUND INDUCTOR 

SHIELDED INDUCTOR WITH RESIN SEALING

TRADITIONAL 

UNSHIELDED WIREWOUND

APPLICATIONS 

•

 

Audio/Video

:

 speakers, televisions, gaming consoles, virtual reality systems, projectors

•

 

Communications

:

 base stations, set top boxes, modems, servers, routers

•

 

Industrial

:

 smart meters, LED drivers, manufacturing line robotics, fuel/oil/water pumps, motor 

controllers, machine/power tools

•

 

White Goods

:

 air conditioners, freezers/refrigerators, washers/dryers, microwave ovens, coffee 

machines

RF 

INDUCTORS

RF INDUCTORS

 

• Air Coil
• Multilayer
• RF Wirewound
• Thin Film

RF Inductors

RF Inductors

22

23

SERIES

SERIES 

INDUCTANCE 

(nH)

SERIES 

CURRENT 

RATING (A)

SERIES 

DCR 

(m

Ω

)

SERIES SRF 

(MHz)

 RATED 

CURRENT 

(A)

DCR

(m

Ω

)

SRF

(MHz)

OPERATING

TEMPERATURE

DIMENSIONS 

(mm)

@ 10nH

L

W

H

Ceramic Multilayer

AIMC-0201

1.5-47

0.05-0.3

240-3600 1600-11000

0.2

800

5500

-55°C to +125°C

0.6

0.3

0.3

AIMC-0402

1.5-120

0.2-0.3

100-2800

600-6000

0.3

420

3200

-55°C to +125°C

1.0

0.5

0.5

AIMC-0402HQ

1.0-15

0.4-1.0

50-220

4000-6000

0.5

180

4500

-55°C to +125°C

1.0

0.6

0.5

AIMC-0603

1.0-270

0.2-0.5

50-2600

350-10000

0.3

260

3400

-40°C to +85°C

1.6

0.8

0.8

AIMC-0805

2.2-220

0.05-0.1

100-2100

350-6000

0.1

300

2100

-40°C to +85°C

2.0

1.3

0.9

SERIES

SERIES 

INDUCTANCE 

(nH)

SERIES 

CURRENT 

RATING (A)

SERIES 

DCR 

(m

Ω

)

SERIES SRF 

(MHz)

 RATED 

CURRENT 

(A)

DCR

(m

Ω

)

SRF

(MHz)

OPERATING

TEMPERATURE

DIMENSIONS 

(mm)

@ 10nH

L

W

H

Air Coil

AIAC-0805C

3.9-68

0.3-1.2

2.6-42.2

1300-3000

0.9

5.4

3000

-40°C to +125°C

2.9

1.8

2.1

AIAC-1008C

6.8-120

0.3-1.2

4.0-63.4

950-3000

1.0

6.0

3000

-40°C to +125°C

3.2

1.9

2.2

AIAC-1512C

2.5-18.5

4.0-4.8

0.8-3.9

2500-3000

4.2

2.7

3000

-40°C to +125°C

3.3

2.5

2.6

AIAC-1606C

5.6-7.2

1.6-1.6

9.0-10.0

6000-6500

1.6

11.5

5200

-40°C to +125°C

4.0

1.4

1.4

AIAC-1812

22-120

2.2-3.5

4.6-11.1

1100-3200

3.4

3.8

4000

-40°C to +125°C

5.0

6.4

4.2

AIAC-2712C

17.5-43.5

2.5-3.5

4.5-6.7

1000-2200

4.2

3.8

2400

-40°C to +125°C

6.0

2.5

2.6

AIAC-4125C

90-538

2.0-3.5

9.5-42.0

400-1000

-40°C to +125°C

9.0

4.4

4.6

The name multilayer references the construction process of the inductor where layers of ceramic 

materials are laminated together. Lamination, terminal finish and conductive patterns can vary to 

optimize for self-resonant frequency (SRF), Q value and DCR specifications. In RF applications, 

multilayer inductors support higher current ratings and inductance values. 

CERAMIC MULTILAYER

APPLICATIONS 

•

 

Audio/Video

:

 audio equipment, amplifiers, stereos/speakers, monitors

•

 

Automotive

:

 electronic throttle control systems (ETC), tire pressure monitoring systems 

•

 

Consumer electronics

:

 Bluetooth speakers, E-cigarettes, drones, portable gaming consoles, digital 

cameras, handheld GPS devices

•

 

Communications

:

 telecommunication devices, wireless LAN, cable modems 

•

 

Medical

:

 medical monitoring devices: blood sugar – glucose, thermometers, finger pulse/oximeters 

•

 

Wearables

:

 smart watches, fitness trackers, smart diving watches, exercise wearables 

•

 

White goods

:

 small appliances, coffee machines

AIR COIL INDUCTORS

Air coils do not have a magnetic core. Most inductors utilize magnetic materials to increase the 

inductance value per wire winding by increasing magnetic flux densities. Magnetic flux is not always 

necessary since RF applications require low inductance values for high frequencies. The air coil 

handles higher current than other RF inductors, such as the multilayer and wirewound types. The rated 

current is based on the heating of the wire alone since the current is not dependent on the magnetic 

saturation. The nature of the air coil is thick wire with spaced out windings creating low DCR and low 

capacitance parasitics. This results in a high Q product useful for RF applications requiring high current.

AIR COIL

APPLICATIONS 

•

 

Audio

:

 audio equipment, amplifiers, stereos/speakers

•

 

Communications

:

 telecommunication devices, high frequency communication equipment 

•

 

Other

:

 proximity sensors, metal sensors, noise suppression for RF power supply, RF filtering, 

impedance matching 

MULTILAYER INDUCTORS

RF Inductors

RF Inductors

24

25

SERIES

SERIES 

INDUCTANCE 

(nH)

SERIES 

CURRENT 

RATING (A)

SERIES 

DCR 

(m

Ω

)

SERIES SRF 

(MHz)

 RATED 

CURRENT 

(A)

DCR

(m

Ω

)

SRF

(MHz)

OPERATING

TEMPERATURE

DIMENSIONS 

(mm)

@ 10nH

L

W

H

Ferrite RF Wirewound

AISC-0402F

18-200

0.39-1.4

46-470

800-3000

-40°C to +85°C

1.1

0.6

0.6

AISC-0603F

47-22000

0.07-1.2

60-11400

20-2350

0.3

940

410

-40°C to +85°C

1.6

1.0

1.0

AISC-0805F

270-68000

0.04-0.35 600-17500

11-550

0.2

1200

63

-40°C to +125°C

2.3

1.7

1.6

AISC-1008F

330-10000

0.3-0.7

170-3300

40-600

0.4

1800

270

-40°C to +125°C

2.9

2.8

2.3

AISC-1210HS 2200-33000

0.22-0.8

500-5000

20-150

0.7

450

200

-40°C to +85°C

3.2

2.5

1.3

SERIES

SERIES 

INDUCTANCE 

(nH)

SERIES 

CURRENT 

RATING (A)

SERIES 

DCR 

(m

Ω

)

SERIES SRF 

(MHz)

 RATED 

CURRENT 

(A)

DCR

(m

Ω

)

SRF

(MHz)

OPERATING

TEMPERATURE

DIMENSIONS 

(mm)

@ 10nH

L

W

H

Ceramic RF Wirewound

AISC-0402HP

2.0-68

0.3-2.1

38-950

1840-8500

1.3

85

4700

-40°C to +125°C

1.0

0.5

0.5

AISC-0402

1.0-150

0.4-1.4

45-2900

1200-12700

0.5

200

3900

-40°C to +125°C

1.2

0.6

0.7

AISC-0603

3.3-560

0.1-0.9

59-8100

650-6000

0.6

130

6000

-40°C to +125°C

1.8

1.1

1.0

AISC-0603HC

1.6-24

1.8-2.4

30-105

2400-12500

2.0

71

3700

-40°C to +125°C

1.8

1.1

1.0

AISC-0603HP

1.7-390

0.2-2.1

33-3800

700-8500

1.4

60

4800

-40°C to +125°C

1.8

1.1

1.0

AISC-0805HQ

2.5-51

1.0-1.6

20-120

1400-6000

1.6

60

3000

-40°C to +125°C

2.3

1.7

1.5

AISC-0805

2.2-1000

0.2-0.6

80-2500

200-6000

0.6

170

4000

-40°C to +125°C

2.3

1.7

1.6

AISC-1008HQ

3.0-100

1.0-1.6

40-160

820-8100

1.3

80

3600

-40°C to +125°C

2.6

2.1

1.7

AISC-1008

4.7-8200

0.2-1.0

80-10700

30-6000

1.0

80

4100

-40°C to +125°C

2.9

2.8

2.3

AISC-1206

3.3-1200

0.3-1.0

70-3200

380-6200

1.0

90

4000

-40°C to +125°C

3.6

2.2

1.5

AISC-1210

3.9-8600

0.2-1.0

50-9000

40-6000

1.0

80

4000

-40°C to +125°C

3.7

3.0

2.7

RF WIREWOUND INDUCTORS

RF wirewound inductors are recommended for applications that require low cost solutions in a 

compact package size. RF wirewound inductors offer greater performance in Q value, DCR and current 

rating over other RF inductors, such as thin film and multilayer types. RF wirewound inductors feature 

a copper wire wrapped around a core material, typically ceramic or ferrite. Ceramic is a nonmagnetic 

material with a low expansion thermal coefficient. This allows for superior inductance stability across 

the operating temperature range. Ferrite core RF wirewound inductors are an affordable option 

for general power conversion applications. Ferrite wirewound inductors are a good option for high 

frequency applications requiring high Q values, low DCR values, and minimal core losses. 

FERRITE RF WIREWOUND

APPLICATIONS 

•

 

Audio/Video

:

 audio equipment, amplifiers, stereos/speakers, monitors

•

 

Automotive

:

 electronic throttle control systems (ETC), tire pressure monitoring systems 

•

 

Communications

:

 telecommunication devices, wireless LAN, cable modems 

•

 

White goods

:

 small appliances, coffee machines

•

 

Other

:

 antenna matching, RF matching, RF transceivers

RF WIREWOUND INDUCTORS

RF wirewound inductors are recommended for applications that require low cost solutions in a 

compact package size. RF wirewound inductors offer greater performance in Q value, DCR and current 

rating over other RF inductors, such as thin film and multilayer types. RF wirewound inductors feature 

a copper wire wrapped around a core material, typically ceramic or ferrite. Ceramic is a nonmagnetic 

material with a low expansion thermal coefficient. This allows for superior inductance stability across 

the operating temperature range. Ferrite core RF wirewound inductors are an affordable option 

for general power conversion applications. Ferrite wirewound inductors are a good option for high 

frequency applications requiring high Q values, low DCR values, and minimal core losses. 

CERAMIC RF WIREWOUND

APPLICATIONS 

•

 

Audio/Video

:

 audio equipment, amplifiers, stereos/speakers, monitors

•

 

Automotive

:

 electronic throttle control systems (ETC), tire pressure monitoring systems 

•

 

Communications

:

 telecommunication devices, wireless LAN, cable modems 

•

 

White goods

:

 small appliances, coffee machines

•

 

Other

:

 antenna matching, RF matching, RF transceivers

26

27

RF Inductors

SERIES

SERIES 

INDUCTANCE 

(nH)

SERIES 

CURRENT 

RATING (A)

SERIES 

DCR 

(m

Ω

)

SERIES SRF 

(MHz)

 RATED 

CURRENT 

(A)

DCR

(m

Ω

)

SRF

(MHz)

OPERATING

TEMPERATURE

DIMENSIONS 

(mm)

@ 10nH

L

W

H

Thin Film

ATFC-0201

0.1-10

0.08-0.4

200-3500 2000-9000

0.1

3500

2000

-25°C to +85°C

0.6

0.3

0.23

ATFC-0201HQ

0.1-4

0.35-0.85

50-400

6000

-40°C to +85°C

0.6

0.3

0.23

ATFC-0402

0.2-33

0.075-0.8

100-4500 2500-14000

0.2

1350

4500

-40°C to +85°C

1.0

0.5

0.32

ATFC-0402HQ

1.3-4.7

0.33-0.73

120-500

7000

-40°C to +85°C

1.0

0.5

0.32

LEADED POWER 

INDUCTORS

LEADED POWER 

INDUCTORS 

• Axial
• Drum Core
• Toroid

THIN FILM INDUCTORS

Thin-film inductors are manufactured using photolithography similar to the silicon fabrication process. 

This creates highly precise inductors with low tolerance and high SRF. Thin-film inductors are the 

preferred choice for RF circuitry such as oscillation circuits, antenna impedance matching and 

high frequency filtering. The most popular applications for this inductor type include wireless LAN, 

Bluetooth, GPS, and GSM.

THIN FILM

APPLICATIONS 

•

 

Audio

:

 amplifiers

•

 

Consumer electronics

:

 notebooks/laptops, printer/copy/fax machines, digital cameras, headphones, 

tablets  

•

 

Communications

:

 wireless LAN, Bluetooth, GPS, cell phones, set top boxes, RF blocking, RF filtering, 

EMI filtering 

•

 

White goods

:

 refrigerators, coffee machines

•

 

Other

:

 power supplies, voltage-controlled oscillators

Leaded Power Inductors

Leaded Power Inductors

28

29

SERIES

SERIES 

INDUCTANCE 

(μH)

SERIES CURRENT 

RATING (A)

SERIES DCR 

(

Ω

)

 RATED 

CURRENT 

(A)

DCR

(

Ω

)

OPERATING

TEMPERATURE

DIMENSIONS 

(mm)

@ 100μH

DIAMETER

H

Unshielded Wirewound Drum Core

AIUR-07

10-1000

0.10-1.05

0.1-6.3

0.39

660

-55°C to +125°C

6.0

4.6

AIUR-10

5.6-10000

0.10-2.45

0.08-25

0.77

440

-55°C to +125°C

8.0

7.5

AIUR-15

22-1000

1.0-5.7

0.03-0.71

3.20

82

-25°C to +85°C

18.0

20.0

Unshielded Wirewound Drum Core 4 pin

AIUR-09

10-1000

0.36-3.6

0.044-3.3

1.30

360

-55°C to +125°C

10.0

6.0

UL Shrink Wrap Drum Core

AIUR-16

3.9-33000

0.03-1.3

0.02-100

0.49

270

-25°C to +85°C

7.0

9.5

AIUR-12

10-4700

0.07-1.5

0.07-18

0.66

500

-25°C to +85°C

7.2

10.5

AIUR-01

100-15000

0.02-0.2

2-80

0.20

2000

-25°C to +85°C

8.5

7.5

AIUR-05

2.2-1500

0.15-3

0.012-3.5

0.59

230

-25°C to +85°C

8.5

9.0

AIUR-04

100-27000

0.30-0.20

2-80

0.20

2000

-25°C to +85°C

8.5

11.2

AIUR-02H

1-2200

0.10-3.5

0.021-3

0.72

210

-25°C to +85°C

8.5

12.0

AIUR-03

1-1000

0.22-3.5

0.013-2.9

0.72

280

-25°C to +85°C

9.0

12.0

AIUR-11

3.9-68000

0.04-1.6

0.022-115

1.00

180

-40°C to +85°C

9.5

11.4

SERIES

SERIES 

INDUCTANCE 

(μH)

SERIES CURRENT 

RATING (A)

SERIES DCR 

(

Ω

)

 RATED 

CURRENT 

(A)

DCR

(

Ω

)

OPERATING

TEMPERATURE

DIMENSIONS 

(mm)

@ 100μH

DIAMETER

H

Conformal Coated Axial

AICC-00

0.22-220

0.04-0.40

0.40-20

0.04

12000

-25°C to +105°C

2.5

4.1

AICC-01

0.22-1000

0.04-0.40

0.40-33

0.09

7000

-25°C to +105°C

3.1

7.1

AICC-02

0.27-1000

0.06-1.11

0.08-26

0.17

3800

-25°C to +105°C

2.8

6.2

AICC-03

0.22-1000

0.10-0.98

0.17-14

0.28

1800

-25°C to +105°C

3.3

9.5

AICC-04

0.1-1000

0.01-1.38

0.08-27.4

0.08

4100

-25°C to +105°C

3.0

7.6

Epoxy Coated Axial

AIAP-01

1.0-10000

0.05-3.30

0.02-85

0.55

670

-40°C to +105°C

3.3

9.1

Molded Axial

AIAM-01

0.022-1000

0.03-2.40

0.03-72

0.08

8000

-55°C to +105°C

2.4

6.4

AIAS-03

100-100000

0.01-0.12

3.12-678

0.12

3120

-55°C to +125°C

4.1

10.4

UL Shrink Wrap Axial

AIAP-02

3.9-18000

0.09-7.30

0.02-48.3

1.20

208

-40°C to +85°C

6.4

14.0

AIAP-05

3.9-18000

0.04-1.28

0.02-48.3

0.63

208

-55°C to +130°C

6.4

17.8

AIAP-03

3.9-120000

0.07-15.50

0.01-71.7

2.79

90

-55°C to +125°C

11.4

22.9

DRUM CORE INDUCTORS

The drum core inductor is a wirewound, through-hole component with visual characteristics of a 

traditional drum. These inductors come unshielded, shielded or in heat shrink tubing. The drum core 

is designed for high inductance filtering or power conversion at frequencies below 100KHz. These 

types are generally larger and taller than a SMD product because of the number of turns needed to 

achieve high inductance values. The leads of the inductor reduce the risk of vibrations or handling 

from demounting the product which could happen in high inductance SMD product. This product will 

be found closer to the power line side of electronics. 

UNSHIELDED 

WIREWOUND 

DRUM CORE

UL SHRINK WRAP 

DRUM CORE

APPLICATIONS 

•

 

Audio/Video

:

 speakers, televisions, stereos, amplifiers, projectors 

•

 

Consumer electronics

:

 drones, E-cigarettes, robotic vacuums 

•

 

Industrial

:

 agricultural/utility/resource monitoring (smart meters), LED drivers, manufacturing line 

robotics, fuel/oil/water pumps, motor controllers, machine/power tools, vending machines, solar 
inverters, drones, heavy construction equipment, commercial/industrial lighting 

•

 

White goods

:

 Air conditioners, freezers/refrigerators, washers/dryers, microwave ovens, coffee 

machines

AXIAL INDUCTORS

The name axial describes the lead locations on the inductor. Copper wire is wrapped around a ferrite 

magnetic core and the leads are located at opposite ends of the inductor rather than together from 

the same end. The axial inductors include a coat of epoxy to increase durability and performance. The 

color bands printed on the exterior of the inductor help identify the inductance value. Axial inductors 

support high current ratings and a wide range of inductance values making them suitable for both RF 

and power applications. Axial inductors are a recommended cost-competitive solution for applications 

with loose performance requirements.

CONFORMAL COATED 

AXIAL

EPOXY COATED 

AXIAL

MOLDED AXIAL

UL SHRINK WRAP 

AXIAL

APPLICATIONS 

•

 

Audio

:

 amplifiers, speakers, audio equipment

•

 

Consumer electronics

:

 wearables and other small personal devices  

•

 

Communications

:

 telecommunication devices

•

 

IoT

:

 smart lighting, smart metering, smart appliances 

•

 

White goods

:

 small appliances, microwaves, toaster ovens, coffee machines

•

 

Other

:

 low power switch mode power supplies, DC/DC converters

UNSHIELDED 

WIREWOUND 

DRUM CORE 4 PIN

MOLDED DRUM 

CORE

UL SHRINK WRAP 

DRUM CORE 4 PIN 

Leaded Power Inductors

Leaded Power Inductors

30

31

SERIES

SERIES 

INDUCTANCE 

(μH)

SERIES CURRENT 

RATING (A)

SERIES DCR 

(m

Ω

)

 RATED 

CURRENT 

(A)

DCR

(m

Ω

)

OPERATING

TEMPERATURE

DIMENSIONS 

(mm)

@ 100μH

DIAMETER

H

Toroid

ATCA-01

0.02-220

1-3

21-190

2.00

81

-40°C to +105°C

18.0

11.5

ATCA-02

22-470

1-5

14-286

2.50

57

-40°C to +105°C

22.0

12.5

ATCA-03

25-230

1-5

16-159

3.50

46

-40°C to +105°C

24.0

11.5

ATCA-04

50-960

1-5

22-438

5.00

33

-40°C to +105°C

27.0

13.5

ATCA-05

90-1800

1-5

34-680

4.20

39

-40°C to +105°C

30.0

17.0

ATCA-06

82-1300

1-5

33-585

4.00

42

-40°C to +105°C

32.0

16.0

ATCA-07

30-850

2-10

9-211

5.00

36

-40°C to +105°C

36.0

19.5

ATCA-08

75-680

5-10

14-105

8.50

22

-40°C to +105°C

36.0

19.5

SERIES

SERIES 

INDUCTANCE 

(μH)

SERIES CURRENT 

RATING (A)

SERIES DCR 

(

Ω

)

 RATED 

CURRENT 

(A)

DCR

(

Ω

)

OPERATING

TEMPERATURE

DIMENSIONS 

(mm)

@ 100μH

DIAMETER

H

UL Shrink Wrap Drum Core

AIUR-06

3.9-15000

0.10-6.5

0.016-20.5

2.10

108

-25°C to +85°C

13.0

18.0

AIRD-01

1-680

0.80-9

0.003-0.7

2.80

95

-25°C to +85°C

16.5

21.0

AIRD-02

1-2200

0.80-11.4

0.003-1.54

4.00

80

-25°C to +85°C

21.0

21.0

AIRD-06

1-2200

0.80-11.4

0.003-1.54

4.00

80

-25°C to +85°C

21.0

21.0

AIRD-03

1-19000

0.50-21

0.003-9

9.00

34

-25°C to +85°C

28.0

21.0

UL Shrink Wrap Drum Core 4 pin

AIUR-08

10-1000

0.53-5.3

0.023-1.7

1.70

160

-25°C to +85°C

11.0

11.0

Molded Drum Core

AISR-875

10-10000

0.08-2.9

0.05-33

0.89

280

-55°C to +125°C

7.8

7.5

AISR-01

1000-120000

0.01-0.09

3.4-97

N/A

N/A

-25°C to +85°C

10.5

10.5

AISR-04

10-1000

0.01-0.0039

0.02-1.5

0.00

190

-25°C to +85°C

10.5

10.5

Toroidal inductors use toroid shaped magnetic cores with copper windings. Although it is wirewound, 

it is not categorized as such because of its distinguishable shape. This inductor is often referred to 

as shielded because the shape of the core. It results in minimized magnetic leakage similar to that 

of a shielded wirewound inductor. These through-hole components work best for high inductance 

applications at low frequencies such as switching regulators, refrigerators and medical devices. There 

are inherent difficulties in the production of this product that results in cost disadvantages. Drum core 

inductors are often used as a substitute when applicable.

TOROID

APPLICATIONS 

•

 

Audio/Video

:

 high end audio equipment, amplifiers, wired headphones, digital mixing boards, sound 

board mixers, televisions 

•

 

Industrial

:

 agricultural/utility/resource monitoring (smart meters), LED drivers, manufacturing line 

robotics, fuel/oil/water pumps, motor controllers, machine/power tools, vending machines, solar 
inverters, drones, heavy construction equipment, commercial/industrial lighting 

•

 

Medical

:

 respiratory ventilators, surgical machines, electric wheelchairs, exercise equipment, 

equipment sterilizer, EKG machines, medical LED lighting, rotary mixing machines, vacuum pumps, CT 
scanners, x-ray machines, electric beds 

•

 

White goods

:

 Air conditioners, freezers/refrigerators, washers/dryers, microwave ovens, coffee 

machines, robotic vacuums 

DRUM CORE INDUCTORS

The drum core inductor is a wirewound, through-hole component with visual characteristics of a 

traditional drum. These inductors come unshielded, shielded or in heat shrink tubing. The drum core 

is designed for high inductance filtering or power conversion at frequencies below 100KHz. These 

types are generally larger and taller than a SMD product because of the number of turns needed to 

achieve high inductance values. The leads of the inductor reduce the risk of vibrations or handling 

from demounting the product which could happen in high inductance SMD product. This product will 

be found closer to the power line side of electronics. 

APPLICATIONS 

•

 

Audio/Video

:

 speakers, televisions, stereos, amplifiers, projectors 

•

 

Consumer electronics

:

 drones, E-cigarettes, robotic vacuums 

•

 

Industrial

:

 agricultural/utility/resource monitoring (smart meters), LED drivers, manufacturing line 

robotics, fuel/oil/water pumps, motor controllers, machine/power tools, vending machines, solar 
inverters, drones, heavy construction equipment, commercial/industrial lighting 

•

 

White goods

:

 Air conditioners, freezers/refrigerators, washers/dryers, microwave ovens, coffee 

machines

TOROID INDUCTORS

UNSHIELDED 

WIREWOUND 

DRUM CORE

UL SHRINK WRAP 

DRUM CORE

UNSHIELDED 

WIREWOUND 

DRUM CORE 4 PIN

MOLDED DRUM 

CORE

UL SHRINK WRAP 

DRUM CORE 4 PIN 

COMBINATION ANTENNAS

32

INDUCTOR APPLICATION NOTE

INDUCTOR TYPES

Inductors are available in a variety of package sizes and construction types. The 

materials and processes used in the construction of an inductor can give the 

component certain properties, such as package size, electrical performance or 

cost, that can be advantageous or required for certain applications. Abracon’s 

available inductor types are outlined below. Inductor type is an essential 

consideration when selecting the appropriate component for an application. 

OVERVIEW

INDUCTOR APPLICATION NOTE

INDUCTOR TYPES

The name multilayer references the construction process of the inductor where layers of ceramic 

materials are laminated together. Lamination, terminal finish and conductive patterns can vary to 

optimize for self-resonant frequency (SRF), Q value and DCR specifications. In RF applications, 

multilayer inductors support higher current ratings and inductance values. In power applications, the 

multilayer inductor is used for power conversion in miniaturized devices.

Multilayer

Plastic Molded

A plastic molded inductor is a wirewound coil encapsulated by a plastic mold. In contrast to traditional 

wirewound inductors, the molded inductor’s plastic material is pressed into a mold around a coil of 

wire. Plastic molded inductors are a cost competitive alternative to the metal alloy mixed molded 

inductors. Additionally, they offer superior current capacity and efficiency when compared to 

unshielded inductors.

Air Coil

Air coils do not have a magnetic core. Most inductors utilize magnetic materials to increase the 

inductance value per wire winding by increasing magnetic flux densities. Magnetic flux is not always 

necessary since RF applications require low inductance values for high frequencies. The air coil 

handles higher current than other RF inductors, such as the multilayer and wirewound types. The rated 

current is based on the heating of the wire alone since the current is not dependent on the magnetic 

saturation. The nature of the air coil is thick wire with spaced out windings creating low DCR and low 

capacitance parasitics. This results in a high Q product useful for RF applications requiring high current.

Axial

The name axial describes the lead locations on the inductor. Copper wire is wrapped around a ferrite 

magnetic core and the leads are located at opposite ends of the inductor rather than together from 

the same end. The axial inductors include a coat of epoxy to increase durability and performance. The 

color bands printed on the exterior of the inductor help identify the inductance value. Axial inductors 

support high current ratings and a wide range of inductance values making them suitable for both RF 

and power applications. Axial inductors are a recommended cost-competitive solution for applications 

with loose performance requirements.

Drum Core

The drum core inductor is a wirewound, through-hole component with visual characteristics of a 

traditional drum. These inductors come unshielded, shielded or in heat shrink tubing. The drum core 

is designed for high inductance filtering or power conversion at frequencies below 100KHz. These 

types are generally larger and taller than a SMD product because of the number of turns needed to 

achieve high inductance values. The leads of the inductor reduce the risk of vibrations or handling 

from demounting the product which could happen in high inductance SMD product. This product will 

be found closer to the power line side of electronics. 

Metal Alloy

A molded inductor is a coil pressed and encapsulated by different types of iron powder mixes. In 

contrast to traditional wirewound inductors, the molded inductor’s magnetic powder material is 

pressed into a mold around a coil of wire. Molded inductors offer better efficiency, shielding, and 

power density when compared to all other inductors. A key factor contributing to the increased 

performance is the complete encapsulation of the core, achieved by using the powder materials to fill 

in the air gaps around the coils of wire,. The encapsulation and material selection provide for superior 

current capacity and efficiency. Additionally, most molded powders are a metal alloy mix as opposed 

to ferrite. This allows for much softer inductor saturation. 

Resin Shielded

Resin shielded inductors are classified as a partially shielded SMD inductor. A magnetic liquid coats 

the wire wound wrapped magnetic core. The magnetic liquid is then hardened during a special baking 

process. Resin shielded inductors are in between shielded and unshielded wirewound inductors in 

terms of performance and cost. Resin shielded inductors are a good choice for applications requiring 

compact power conversion with tight budget constraints.

RF Wirewound

RF wirewound inductors are recommended for applications that require low cost solutions in a 

compact package size. RF wirewound inductors offer greater performance in Q value, DCR and current 

rating over other RF inductors, such as thin film and multilayer types. RF wirewound inductors feature 

a copper wire wrapped around a core material, typically ceramic or ferrite. Ceramic is a nonmagnetic 

material with a low expansion thermal coefficient. This allows for superior inductance stability across 

the operating temperature range. Ferrite core RF wirewound inductors are an affordable option for 

general power conversion applications. Ceramic wirewound inductors are a good option for high 

frequency applications requiring high Q values, low DCR values, and minimal core losses. 

33

34

Leading

Engineering

and Design

Capabilities

Unmatched

Channel

Access

Superior

Product

Breadth

Strategic

Factory

Partner

Relationship

Timing & Synchronization

Power & Energy

RF & Connectivity

Precision Quartz 

(XO/VCXO/TCXO/OCXO)

Accurate temp compensation, low jitter/

noise

Real Time Clock (RTC)

Lowest power, highly integrated & accurate

MEMS Oscillators

General purpose or high performance

Quartz Crystals (XTAL)

MHz or kHz, SMD or through-hole

Quartz Oscillators (XO)

MHz or 32.768kHz, SMD or through-hole

Chip Inductors

Low profile and compact, saves space with 

high current carrying capability

Wireless Charging Coils

Reliable, efficient, eliminates power 

connectors

Low Profile Shielded Inductors

Medium to high power, high temperature

High Power Toroid

Inherent immunity to EMI, high temperature

Drum Core Inductors

Ideal for high power applications

External Antennas 

Best sensitivity and range performance

RJ45

With integrated magnetics 

PoE, 10G to 100Mbps, SMD/PIH

Chip Antennas 

Improve RF range, sensitivity 

compared to PCB antennas

Patch Antennas 

Best sensitivity vs size compromise

RFID

Antennas and fully integrated tags

Flexible Antennas

Low profile, multi-band, easy installation

Molded Inductors

High current, high efficiency, low profile 

INDUCTOR APPLICATION NOTE

INDUCTOR TYPES

Sleeve Shielded

Thin Film

Thin-film inductors are manufactured using photolithography similar to the silicon fabrication process. 

This creates highly precise inductors with low tolerance and high SRF. Thin-film inductors are the 

preferred choice for RF circuitry such as oscillation circuits, antenna impedance matching and high 

frequency filtering. The most popular applications for this inductor type include wireless LAN, Bluetooth, 

GPS, and GSM.

Toroidal

Toroidal inductors use toroid shaped magnetic cores with copper windings. Although it is wirewound, 

it is not categorized as such because of its distinguishable shape. This inductor is often referred to 

as shielded because the shape of the core. It results in minimized magnetic leakage similar to that 

of a shielded wirewound inductor. These through-hole components work best for high inductance 

applications at low frequencies such as switching regulators, refrigerators and medical devices. There 

are inherent difficulties in the production of this product that results in cost disadvantages. Drum core 

inductors are often used as a substitute when applicable.

Unshielded

Unshielded wirewound inductors consist of a copper wire wrapped around an SMD magnetic core. This 

inductor type does not include added shielding properties or increased inductance of added magnetic 

material around the wire. For this reason, the performance is lower when compared to shielded 

wirewound inductors. They offer an affordable option for general power conversion applications. 

Shielded wirewound inductors come in several different forms of SMD inductors. This inductor type 

uses a magnetic sleeve to cover the wirewound wrapped magnetic core. This sleeve limits the radiation 

of magnetic fields resulting from induced current. Shielding is essential to meet FCC and other national 

emission standards as the industry moves to higher current requiring loads. The shielded sleeve is also 

important for reducing EMI and limiting the effect of power electronics on nearby sensitive circuitry. The 

shielded sleeve increases the performance of the inductor in more ways than one. Additional magnetic 

material around the wire adds higher current density and higher inductance per turn. This allows for 

a reduction in wire material per inductance. In turn, this decreases the DCR and increases the current 

handling capabilities. The shielded sleeve inductor delivers a higher performance than unshielded 

wirewound inductors at a slightly higher cost.

To read the full white paper, visit abracon.com

5G/4G/LTE ANTENNAS

Abracon is the critical link connecting high-quality factories, a global network of electronic component 

distributors, and 25,000 end customers requiring highly engineered solutions and design input. An in-house 

engineering team, a technology-leadership focus and a unique solution-selling approach provide ongoing 

benefits across the channel. Abracon’s carefully developed long-term NPI strategy focuses on designing and 

launching revolutionary and proprietary new products. 
A technical approach results in strong demand generation through early design involvement with OEMs, often 

gaining print on reference design positions and products that are “spec’d in.” 

Why Abracon?

KEY MARKET SEGMENTS AND APPLICATIONS

Automotive

IoT

Communications

Wearables

Industrial

Test & Measurement

Data Center

Medical

25,000+

Active Customers

300 Million

Parts Shipped Annually

70,000+

SKUs

27 

Distributors

LEARN  MORE AT

A B R A C O N . C O M

CONTACT 

LOCATED 

GLOBALLY

General Inquiries

abInfo@abracon.com

Technical Support

tech-support@abracon.com

PR and Media Inquiries

marketing@abracon.com

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