Fixed Inductors

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Part RoHS Manufacturer Inductor Type Inductor Application No. of Terminals Package Style (Meter) Shielded Surface Mount Lead Diameter Minimum Quality Factor (at L-nom) Lead Spacing Minimum Operating Temperature Terminal Finish Self Resonance Frequency Terminal Placement DC Resistance No. of Functions Lead Length Core Material Test Frequency Package Height Case or Size Code Manufacturer Series Special Feature Construction Tolerance Packing Method Package Length JESD-609 Code Shape or Size Description Series Terminal Shape Nominal Inductance (L) Package Diameter Reference Standard Package Width Maximum Operating Temperature Maximum Rated Current

SRR1206-122KL

Bourns

General Purpose Inductor

Power Inductor

2

SMT

Yes

Yes

-40 °C (-40 °F)

Tin Over Nickel

1.5 MHz

Dual Ended

2.65 Ω

1

Ferrite

1 kHz

0.256 in (6.5 mm)

5050

Rectangular

10 %

Tape and Reel, Embossed, 13 in

0.5 in (12.7 mm)

e3

Rectangular Package

Wraparound

1.2 mH

0.5 in (12.7 mm)

125 °C (257 °F)

250 mA

SRR1206-220ML

Bourns

General Purpose Inductor

Power Inductor

2

SMT

Yes

Yes

-40 °C (-40 °F)

Tin Over Nickel

11 MHz

Dual Ended

62 mΩ

1

Ferrite

1 kHz

0.256 in (6.5 mm)

5050

Rectangular

20 %

Tape and Reel, Embossed, 13 in

0.5 in (12.7 mm)

e3

Rectangular Package

Wraparound

22 μH

0.5 in (12.7 mm)

125 °C (257 °F)

2.3 A

SRR1206-2R5ML

Bourns

General Purpose Inductor

Power Inductor

2

SMT

Yes

Yes

-40 °C (-40 °F)

Tin Over Nickel

30 MHz

Dual Ended

16 mΩ

1

Ferrite

1 kHz

0.256 in (6.5 mm)

5050

Rectangular

20 %

Tape and Reel, Embossed, 13 in

0.5 in (12.7 mm)

e3

Rectangular Package

Wraparound

2.5 μH

0.5 in (12.7 mm)

125 °C (257 °F)

6.2 A

SRR1206-391KL

Bourns

General Purpose Inductor

Power Inductor

2

SMT

Yes

Yes

-40 °C (-40 °F)

Tin Over Nickel

2.5 MHz

Dual Ended

870 mΩ

1

Ferrite

1 kHz

0.256 in (6.5 mm)

5050

Rectangular

10 %

Tape and Reel, Embossed, 13 in

0.5 in (12.7 mm)

e3

Rectangular Package

Wraparound

390 μH

0.5 in (12.7 mm)

125 °C (257 °F)

550 mA

SRR1206-471KL

Bourns

General Purpose Inductor

Power Inductor

2

SMT

Yes

Yes

-40 °C (-40 °F)

Tin Over Nickel

2.5 MHz

Dual Ended

970 mΩ

1

Ferrite

1 kHz

0.256 in (6.5 mm)

5050

Rectangular

10 %

Tape and Reel, Embossed, 13 in

0.5 in (12.7 mm)

e3

Rectangular Package

Wraparound

470 μH

0.5 in (12.7 mm)

125 °C (257 °F)

500 mA

SRR6603-101ML

Bourns

General Purpose Inductor

Power Inductor

2

SMT

Yes

Yes

-55 °C (-67 °F)

Tin Copper Silver

10 MHz

Dual Ended

480 mΩ

1

Ferrite

100 kHz

0.118 in (3 mm)

2617

Rectangular

20 %

Tape and Reel, Embossed, 7 in

0.26 in (6.6 mm)

Rectangular Package

Wraparound

100 μH

0.173 in (4.4 mm)

125 °C (257 °F)

300 mA

SRR6603-151ML

Bourns

General Purpose Inductor

Power Inductor

2

SMT

Yes

Yes

-55 °C (-67 °F)

Tin Copper Silver

9 MHz

Dual Ended

590 mΩ

1

Ferrite

100 kHz

0.118 in (3 mm)

2617

Rectangular

20 %

Tape and Reel, Embossed, 7 in

0.26 in (6.6 mm)

Rectangular Package

Wraparound

150 μH

0.173 in (4.4 mm)

125 °C (257 °F)

260 mA

SRR6603-221ML

Bourns

General Purpose Inductor

Power Inductor

2

SMT

Yes

Yes

-55 °C (-67 °F)

Tin Copper Silver

6 MHz

Dual Ended

770 mΩ

1

Ferrite

100 kHz

0.118 in (3 mm)

2617

Rectangular

20 %

Tape and Reel, Embossed, 7 in

0.26 in (6.6 mm)

Rectangular Package

Wraparound

220 μH

0.173 in (4.4 mm)

125 °C (257 °F)

220 mA

SRR6603-471ML

Bourns

General Purpose Inductor

Power Inductor

2

SMT

Yes

Yes

-55 °C (-67 °F)

Tin Copper Silver

4 MHz

Dual Ended

1.8 Ω

1

Ferrite

100 kHz

0.118 in (3 mm)

2617

Rectangular

20 %

Tape and Reel, Embossed, 7 in

0.26 in (6.6 mm)

Rectangular Package

Wraparound

470 μH

0.173 in (4.4 mm)

125 °C (257 °F)

190 mA

SRR6603-681ML

Bourns

General Purpose Inductor

Power Inductor

2

SMT

Yes

Yes

-55 °C (-67 °F)

Tin Copper Silver

3 MHz

Dual Ended

2.2 Ω

1

Ferrite

100 kHz

0.118 in (3 mm)

2617

Rectangular

20 %

Tape and Reel, Embossed, 7 in

0.26 in (6.6 mm)

Rectangular Package

Wraparound

680 μH

0.173 in (4.4 mm)

125 °C (257 °F)

180 mA

P0144NL

Pulse Electronics

General Purpose Inductor

Power Inductor

2

SMT

Yes

Yes

-40 °C (-40 °F)

Dual Ended

31 mΩ

1

0.215 in (5.46 mm)

5050

Rectangular

20 %

Tube

0.5 in (12.7 mm)

Rectangular Package

Wraparound

10.4 μH

0.5 in (12.7 mm)

130 °C (266 °F)

3.8 A

P0145NL

Pulse Electronics

General Purpose Inductor

Power Inductor

2

SMT

Yes

Yes

-40 °C (-40 °F)

Dual Ended

46 mΩ

1

0.215 in (5.46 mm)

5050

Rectangular

20 %

Tube

0.5 in (12.7 mm)

Rectangular Package

Wraparound

14.6 μH

0.5 in (12.7 mm)

130 °C (266 °F)

3.13 A

P0146NL

Pulse Electronics

General Purpose Inductor

Power Inductor

2

SMT

Yes

Yes

-40 °C (-40 °F)

Dual Ended

75 mΩ

1

0.215 in (5.46 mm)

5050

Rectangular

20 %

Tube

0.5 in (12.7 mm)

Rectangular Package

Wraparound

25 μH

0.5 in (12.7 mm)

130 °C (266 °F)

2.43 A

P0147NL

Pulse Electronics

General Purpose Inductor

Power Inductor

2

SMT

Yes

Yes

-40 °C (-40 °F)

Dual Ended

139 mΩ

1

0.215 in (5.46 mm)

5050

Rectangular

20 %

Tube

0.5 in (12.7 mm)

Rectangular Package

Wraparound

56 μH

0.5 in (12.7 mm)

130 °C (266 °F)

1.65 A

P0148NL

Pulse Electronics

General Purpose Inductor

Power Inductor

2

SMT

Yes

Yes

-40 °C (-40 °F)

Dual Ended

208 mΩ

1

0.215 in (5.46 mm)

5050

Rectangular

20 %

Tube

0.5 in (12.7 mm)

Rectangular Package

Wraparound

83 μH

0.5 in (12.7 mm)

130 °C (266 °F)

1.35 A

P0149NL

Pulse Electronics

General Purpose Inductor

Power Inductor

2

SMT

Yes

Yes

-40 °C (-40 °F)

Dual Ended

283 mΩ

1

0.215 in (5.46 mm)

5050

Rectangular

20 %

Tube

0.5 in (12.7 mm)

Rectangular Package

Wraparound

100 μH

0.5 in (12.7 mm)

130 °C (266 °F)

1.23 A

P0150NL

Pulse Electronics

General Purpose Inductor

Power Inductor

2

SMT

Yes

Yes

-40 °C (-40 °F)

Dual Ended

445 mΩ

1

0.215 in (5.46 mm)

5050

Rectangular

20 %

Tube

0.5 in (12.7 mm)

Rectangular Package

Wraparound

152 μH

0.5 in (12.7 mm)

130 °C (266 °F)

990 mA

P0151NL

Pulse Electronics

General Purpose Inductor

Power Inductor

2

SMT

Yes

Yes

-40 °C (-40 °F)

Dual Ended

673 mΩ

1

0.215 in (5.46 mm)

5050

Rectangular

20 %

Tube

0.5 in (12.7 mm)

Rectangular Package

Wraparound

220 μH

0.5 in (12.7 mm)

130 °C (266 °F)

810 mA

P0153NL

Pulse Electronics

General Purpose Inductor

Power Inductor

2

SMT

Yes

Yes

-40 °C (-40 °F)

Dual Ended

1.52 Ω

1

0.215 in (5.46 mm)

5050

Rectangular

20 %

Tube

0.5 in (12.7 mm)

Rectangular Package

Wraparound

472 μH

0.5 in (12.7 mm)

130 °C (266 °F)

530 mA

P0174NL

Pulse Electronics

General Purpose Inductor

Power Inductor

4

SMT

No

Yes

-40 °C (-40 °F)

Dual In-Line

7.6 mΩ

2

250 kHz

0.5 in (12.7 mm)

Parallel Connected

Rectangular

10 %

Tube

1.22 in (30.99 mm)

Rectangular Package

One Surface

2.2 μH

1 in (25.4 mm)

130 °C (266 °F)

8.3 A

P0846NL

Pulse Electronics

General Purpose Inductor

Power Inductor

2

Radial

No

No

0.035 in (0.89 mm)

0.3 in (7.62 mm)

-40 °C (-40 °F)

Radial

23 mΩ

1

0.13 in (3.31 mm)

0.75 in (19.05 mm)

Simple Switcher

Toroidal

20 %

0.67 in (17.02 mm)

Rectangular Package

Wire

14.8 μH

0.46 in (11.69 mm)

130 °C (266 °F)

5 A

P0848NL

Pulse Electronics

General Purpose Inductor

Power Inductor

2

Radial

No

No

0.039 in (0.99 mm)

0.45 in (11.44 mm)

-40 °C (-40 °F)

Radial

50 mΩ

1

0.13 in (3.31 mm)

1.35 in (34.29 mm)

Simple Switcher

Toroidal

20 %

0.95 in (24.13 mm)

Rectangular Package

Wire

50 μH

0.6 in (15.24 mm)

130 °C (266 °F)

5 A

PE-53363NL

Pulse Electronics

General Purpose Inductor

Power Inductor

4

SMT

Yes

Yes

-40 °C (-40 °F)

Tin Copper

Dual In-Line

3.4 mΩ

2

0.39 in (9.91 mm)

Rectangular

1.11 in (28.19 mm)

e2

Rectangular Package

Wraparound

4 μH

1 in (25.4 mm)

130 °C (266 °F)

22.4 A

PE-53682NLT

Pulse Electronics

General Purpose Inductor

Power Inductor

2

SMT

Yes

Yes

-40 °C (-40 °F)

Dual Ended

8.3 mΩ

1

0.39 in (9.91 mm)

7474

Rectangular

Tape and Reel

0.74 in (18.8 mm)

Rectangular Package

Wraparound

8.4 μH

0.74 in (18.8 mm)

130 °C (266 °F)

10.4 A

PE-53808SNL

Pulse Electronics

General Purpose Inductor

Power Inductor

2

SMT

No

Yes

-40 °C (-40 °F)

Dual Ended

2.7 Ω

1

0.36 in (9.14 mm)

4444

Simple Switcher

Toroidal

20 %

0.44 in (11.18 mm)

Rectangular Package

Wraparound

374 μH

0.435 in (11.05 mm)

130 °C (266 °F)

200 mA

PE-53830SNLT

Pulse Electronics

General Purpose Inductor

Power Inductor

2

SMT

No

Yes

-40 °C (-40 °F)

Dual Ended

200 mΩ

1

Amorphous Magnetic

0.39 in (9.91 mm)

6062

Simple Switcher

Toroidal

20 %

Tape and Reel

0.62 in (15.75 mm)

Rectangular Package

Wraparound

77 μH

0.6 in (15.24 mm)

130 °C (266 °F)

1.54 A

PE-53932NL

Pulse Electronics

General Purpose Inductor

Power Inductor

2

Radial

No

No

0.02 in (0.51 mm)

-40 °C (-40 °F)

Radial

100 mΩ

1

0.135 in (3.43 mm)

Amorphous Magnetic

0.365 in (9.27 mm)

6464

Simple Switcher

Toroidal

20 %

0.635 in (16.13 mm)

Rectangular Package

Wire

37 μH

0.635 in (16.13 mm)

130 °C (266 °F)

2.24 A

PE-53933NL

Pulse Electronics

General Purpose Inductor

Power Inductor

2

Radial

No

No

0.02 in (0.51 mm)

-40 °C (-40 °F)

Radial

70 mΩ

1

0.135 in (3.43 mm)

Amorphous Magnetic

0.365 in (9.27 mm)

6464

Simple Switcher

Toroidal

20 %

0.635 in (16.13 mm)

Rectangular Package

Wire

24 μH

0.635 in (16.13 mm)

130 °C (266 °F)

2.74 A

PE-53933SNL

Pulse Electronics

General Purpose Inductor

Power Inductor

2

SMT

No

Yes

-40 °C (-40 °F)

Dual Ended

70 mΩ

1

Amorphous Magnetic

0.39 in (9.91 mm)

6062

Simple Switcher

Toroidal

20 %

0.62 in (15.75 mm)

Rectangular Package

Wraparound

24 μH

0.6 in (15.24 mm)

130 °C (266 °F)

2.74 A

PE-53935NL

Pulse Electronics

General Purpose Inductor

Power Inductor

2

Radial

No

No

0.023 in (0.584 mm)

0.3 in (7.62 mm)

-40 °C (-40 °F)

Radial

230 mΩ

1

0.13 in (3.31 mm)

Amorphous Magnetic

0.95 in (24.13 mm)

8345

Simple Switcher

Toroidal

20 %

0.83 in (21.08 mm)

Rectangular Package

Wire

250 μH

0.45 in (11.43 mm)

130 °C (266 °F)

1.5 A

RLF12545T-2R7N8R7-PF

TDK

General Purpose Inductor

Power Inductor

2

SMT

Yes

Yes

-20 °C (-4 °F)

Dual Ended

4.5 mΩ

1

Ferrite

100 kHz

0.185 in (4.7 mm)

5049

DC Resistance is measured at 20% Tolerance

Chip

30 %

Tape and Reel, 13 in

0.504 in (12.8 mm)

Rectangular Package

Wraparound

2.7 μH

0.492 in (12.5 mm)

105 °C (221 °F)

8.7 A

SLF12555T-151MR88-PF

TDK

General Purpose Inductor

Power Inductor

2

SMT

Yes

Yes

-40 °C (-40 °F)

Dual Ended

190 mΩ

1

Ferrite

1 kHz

0.217 in (5.5 mm)

4949

DC Resistance is measured at 20%

Rectangular

20 %

Tape and Reel, Embossed Plastic, 13 in

0.492 in (12.5 mm)

Rectangular Package

Wraparound

150 μH

0.492 in (12.5 mm)

105 °C (221 °F)

1.4 A

SLF12555T-221MR72-PF

TDK

General Purpose Inductor

Power Inductor

2

SMT

Yes

Yes

-40 °C (-40 °F)

Tin

Dual Ended

270 mΩ

1

Ferrite

1 kHz

0.217 in (5.5 mm)

4949

DC Resistance is measured at 20%

Rectangular

20 %

Tape and Reel, Embossed Plastic, 13 in

0.492 in (12.5 mm)

e3

Rectangular Package

Wraparound

220 μH

0.492 in (12.5 mm)

105 °C (221 °F)

1.2 A

FLF3215T-1R0N

TDK

General Purpose Inductor

Power Inductor

2

SMT

Yes

Yes

30

-40 °C (-40 °F)

100 MHz

Dual Ended

30 mΩ

1

1 MHz

0.061 in (1.55 mm)

1210

FLF

DC Resistance is measured at 20% Tolerance

Magnetic Shielding

30 %

Tape and Reel

0.126 in (3.2 mm)

Rectangular Package

FLF3215

Wraparound

1 μH

0.098 in (2.5 mm)

125 °C (257 °F)

2.35 A

3HCR-100

Api Delevan

General Purpose Inductor

Power Inductor

2

Radial

No

No

0.042 in (1.07 mm)

0.937 in (23.8 mm)

Tin/Copper (Sn99.3Cu0.7)

Radial

65 mΩ

1

1 in (25.4 mm)

Ferrite

1 kHz

Cylindrical

10 %

Bulk

1.125 in (28.58 mm)

e2

Cylindrical Package

Wire

100 μH

0.812 in (20.62 mm)

3 A

PTHF100R-50

Api Delevan

General Purpose Inductor

Power Inductor

2

Radial

Yes

No

0.025 in (0.63 mm)

0.25 in (6.35 mm)

Tin/Copper (Sn99.3Cu0.7)

4 MHz

Radial

55 mΩ

1

0.5 in (12.7 mm)

1 kHz

Toroidal

10 %

0.3 in (7.62 mm)

e2

Circular Package

Wire

100 μH

0.625 in (15.87 mm)

3.14 A

LQH2MCN1R0M02L

Murata Manufacturing

General Purpose Inductor

Power Inductor

2

SMT

No

Yes

-40 °C (-40 °F)

100 MHz

Dual Ended

390 mΩ

1

Ferrite

1 MHz

0.035 in (0.9 mm)

0806

DC Resistance is measured at 30% Tolerance

Chip Coil

20 %

Tape and Reel, Embossed, 7 in

0.079 in (2 mm)

Rectangular Package

Wraparound

1 μH

0.063 in (1.6 mm)

85 °C (185 °F)

485 mA

LPA1020-100KL

Bourns

General Purpose Inductor

Power Inductor

2

Axial

No

No

0.026 in (0.65 mm)

-40 °C (-40 °F)

Tin Copper

Axial

50 mΩ

2

0.984 in (25 mm)

Ferrite

1 kHz

Axial

10 %

0.787 in (20 mm)

e2

Tubular Package

Wire

10 μH

0.394 in (10 mm)

85 °C (185 °F)

3.5 A

LPA1020-500KL

Bourns

General Purpose Inductor

Power Inductor

2

Axial

No

No

0.026 in (0.65 mm)

-40 °C (-40 °F)

Tin Copper

Axial

120 mΩ

2

0.984 in (25 mm)

Ferrite

1 kHz

Axial

10 %

0.787 in (20 mm)

e2

Tubular Package

Wire

50 μH

0.394 in (10 mm)

85 °C (185 °F)

2 A

LPA1226-500KL

Bourns

General Purpose Inductor

Power Inductor

2

Axial

No

No

0.031 in (0.8 mm)

-40 °C (-40 °F)

Tin Copper

Axial

80 mΩ

2

0.984 in (25 mm)

Ferrite

1 kHz

Axial

10 %

1.024 in (26 mm)

e2

Tubular Package

Wire

50 μH

0.472 in (12 mm)

85 °C (185 °F)

3 A

RLB0812-182KL

Bourns

General Purpose Inductor

RF Inductor

2

Radial

No

No

0.026 in (0.65 mm)

0.118 in (3 mm)

-40 °C (-40 °F)

Matte Tin

800 kHz

Radial

7 Ω

1

Ferrite

252 kHz

Tubular

10 %

Bulk

0.394 in (10 mm)

e3

Tubular Package

Wire

1.8 mH

0.264 in (6.7 mm)

125 °C (257 °F)

90 mA

RLB0912-681KL

Bourns

General Purpose Inductor

RF Inductor

2

Radial

No

No

0.026 in (0.65 mm)

0.197 in (5 mm)

-40 °C (-40 °F)

Matte Tin

2.3 MHz

Radial

2.3 Ω

1

Ferrite

1 kHz

Tubular

10 %

Bulk

0.394 in (10 mm)

e3

Tubular Package

Wire

680 μH

0.343 in (8.7 mm)

125 °C (257 °F)

500 mA

RLB0914-821KL

Bourns

General Purpose Inductor

RF Inductor

2

Radial

No

No

0.026 in (0.65 mm)

0.197 in (5 mm)

-40 °C (-40 °F)

Matte Tin

1.5 MHz

Radial

1.8 Ω

1

Ferrite

796 kHz

Tubular

10 %

Tray

0.472 in (12 mm)

e3

Tubular Package

Wire

820 μH

0.343 in (8.7 mm)

125 °C (257 °F)

460 mA

SDR0906-120ML

Bourns

General Purpose Inductor

Power Inductor

8

SMT

No

Yes

-40 °C (-40 °F)

Tin Silver Copper

23 MHz

Dual In-Line

100 mΩ

1

Ferrite

2.52 MHz

0.248 in (6.3 mm)

4341

Rectangular

20 %

Tape and Reel, Embossed Plastic/Paper, 13 in

0.433 in (11 mm)

e1

Rectangular Package

Gull Wing

12 μH

0.413 in (10.5 mm)

125 °C (257 °F)

2 A

SDR0906-122KL

Bourns

General Purpose Inductor

Power Inductor

8

SMT

No

Yes

-40 °C (-40 °F)

Tin Silver Copper

2 MHz

Dual In-Line

4 Ω

1

Ferrite

252 kHz

0.248 in (6.3 mm)

4341

Rectangular

10 %

Tape and Reel, Embossed Plastic/Paper, 13 in

0.433 in (11 mm)

e1

Rectangular Package

Gull Wing

1.2 mH

0.413 in (10.5 mm)

125 °C (257 °F)

200 mA

SDR0906-221KL

Bourns

General Purpose Inductor

Power Inductor

8

SMT

No

Yes

-40 °C (-40 °F)

Tin Silver Copper

6 MHz

Dual In-Line

850 mΩ

1

Ferrite

796 kHz

0.248 in (6.3 mm)

4341

Rectangular

10 %

Tape and Reel, Embossed Plastic/Paper, 13 in

0.433 in (11 mm)

e1

Rectangular Package

Gull Wing

220 μH

0.413 in (10.5 mm)

125 °C (257 °F)

600 mA

SRR0603-2R5ML

Bourns

General Purpose Inductor

Power Inductor

2

SMT

Yes

Yes

-40 °C (-40 °F)

Tin Over Nickel

90 MHz

Dual Ended

40 mΩ

1

Ferrite

1 kHz

0.122 in (3.1 mm)

2626

Rectangular

20 %

Tape and Reel, Embossed, 7 in

0.256 in (6.5 mm)

e3

Rectangular Package

Wraparound

2.5 μH

0.256 in (6.5 mm)

125 °C (257 °F)

2 A

SRR0603-330KL

Bourns

General Purpose Inductor

Power Inductor

2

SMT

Yes

Yes

-40 °C (-40 °F)

Tin Over Nickel

16 MHz

Dual Ended

430 mΩ

1

Ferrite

1 kHz

0.122 in (3.1 mm)

2626

Rectangular

10 %

Tape and Reel, Embossed, 7 in

0.256 in (6.5 mm)

e3

Rectangular Package

Wraparound

33 μH

0.256 in (6.5 mm)

125 °C (257 °F)

600 mA

Fixed Inductors

Fixed inductors, also known as passive inductors, are electronic components that are designed to store energy in a magnetic field. These components are used in a wide range of electronic applications, including power supplies, filters, oscillators, and RF circuits.

Fixed inductors can be classified into several types based on their specific characteristics and applications. Some of the most common types of fixed inductors include:

1. Wire-wound inductors - These inductors consist of a wire coil wound around a core, typically made of a magnetic material such as iron or ferrite. Wire-wound inductors are commonly used in power supplies and filters.

2. Multilayer ceramic inductors - These inductors are made by stacking thin layers of ceramic material with metal electrodes. Multilayer ceramic inductors are commonly used in high-frequency applications due to their high Q factor and small size.

3. Ferrite bead inductors - These inductors consist of a cylindrical or toroidal ferrite bead that is threaded onto a wire or placed over a PCB trace. Ferrite bead inductors are commonly used in EMI suppression and RF filtering applications.

Fixed inductors are available in a wide range of inductance values, sizes, and power ratings. They are typically characterized by their inductance value, tolerance, and frequency response. Inductance is measured in henries (H) or millihenries (mH), and tolerance refers to the allowed deviation from the specified inductance value.