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

DFE252012PD-R47M=P2

Murata Manufacturing

General Purpose Inductor

Power Inductor

2

SMT

Yes

Yes

-40 °C (-40 °F)

Dual Ended

27 mΩ

1

Metal Alloy

1 MHz

0.047 in (1.2 mm)

1008

Rectangular

20 %

Tape and Reel, Embossed, 7 in

0.098 in (2.5 mm)

Rectangular Package

Wraparound

470 nH

AEC-Q200

0.079 in (2 mm)

125 °C (257 °F)

4 A

HCM1103-220-R

Eaton Corporation

General Purpose Inductor

Power Inductor

2

SMT

Yes

Yes

-55 °C (-67 °F)

Dual Ended

99 mΩ

1

Powdered Iron

100 kHz

0.118 in (3 mm)

4439

Rectangular

20 %

Tape and Reel, 13 in

0.437 in (11.1 mm)

Rectangular Package

Wraparound

22 μH

0.394 in (10 mm)

125 °C (257 °F)

3 A

LQP03TN1N2B02D

Murata Manufacturing

General Purpose Inductor

RF Inductor

2

SMT

No

Yes

14

-55 °C (-67 °F)

Tin

17000 MHz

Dual Ended

100 mΩ

1

500 MHz

0.012 in (0.3 mm)

0201

Inductance Tolerance is 0.1 nH

Chip

8.33 %

Tape and Reel, Paper, 7 in

0.024 in (0.6 mm)

e3

Rectangular Package

Wraparound

1.2 nH

0.012 in (0.3 mm)

125 °C (257 °F)

750 mA

LQP03TN3N9B02D

Murata Manufacturing

General Purpose Inductor

RF Inductor

2

SMT

No

Yes

14

-55 °C (-67 °F)

Tin

5700 MHz

Dual Ended

300 mΩ

1

500 MHz

0.012 in (0.3 mm)

0201

Inductance Tolerance is 0.1 nH

Chip

2.56 %

Tape and Reel, Paper, 7 in

0.024 in (0.6 mm)

e3

Rectangular Package

Wraparound

3.9 nH

0.012 in (0.3 mm)

125 °C (257 °F)

400 mA

MLP2520S4R7ST0S1

TDK

General Purpose Inductor

Power Inductor

2

SMT

Yes

Yes

-40 °C (-40 °F)

Dual Ended

110 mΩ

1

Ferrite

2 MHz

0.043 in (1.1 mm)

1008

DC Resistance is measured at 30%

Rectangular

20 %

Tape and Reel, 7 in

0.098 in (2.5 mm)

Rectangular Package

Wraparound

4.7 μH

0.079 in (2 mm)

125 °C (257 °F)

1 A

NL252018-220KT

Venkel

General Purpose Inductor

RF Inductor

2

SMT

No

Yes

25

-20 °C (-4 °F)

Matte Tin Over Nickel

22 MHz

Dual Ended

5.5 Ω

1

Ferrite

2.52 MHz

0.071 in (1.8 mm)

1008

Q measured at 25 MHz

Chip

10 %

Tape and Reel, Embossed, 7 in

0.098 in (2.5 mm)

e3

Rectangular Package

Wraparound

22 μH

0.079 in (2 mm)

100 °C (212 °F)

125 mA

NRS8040T220MJGJV

Taiyo Yuden

General Purpose Inductor

Power Inductor

2

SMT

No

Yes

-40 °C (-40 °F)

13 MHz

Dual Ended

85.8 mΩ

1

Ferrite

100 kHz

0.157 in (4 mm)

3131

DC Resistance is measured at 30%

Rectangular

20 %

Tape and Reel, Embossed, 7 in

0.315 in (8 mm)

Rectangular Package

One Surface

22 μH

AEC-Q200

0.315 in (8 mm)

125 °C (257 °F)

2.2 A

SD25-150-R

Eaton Corporation

General Purpose Inductor

Power Inductor

2

SMT

Yes

Yes

-40 °C (-40 °F)

Matte Tin with Nickel barrier

Dual Ended

95.6 mΩ

1

Ferrite

0.098 in (2.5 mm)

2020

Shielded

Tape and Reel, 13 in

0.205 in (5.2 mm)

e3

Rectangular Package

Wraparound

15 μH

0.205 in (5.2 mm)

85 °C (185 °F)

1.08 A

SRN6045TA-100M

Bourns

General Purpose Inductor

Power Inductor

2

SMT

Yes

Yes

15

-55 °C (-67 °F)

Tin

25 MHz

Dual Ended

52 mΩ

1

Ferrite

1 MHz

0.165 in (4.2 mm)

2424

DC Resistance measured at 20% Tolerance

Rectangular

20 %

Tape and Reel, Embossed, 13 in

0.236 in (6 mm)

e3

Rectangular Package

One Surface

10 μH

AEC-Q200

0.236 in (6 mm)

125 °C (257 °F)

3.2 A

B78108S1472K000

TDK

General Purpose Inductor

RF Inductor

2

Axial

No

No

0.031 in (0.8 mm)

60

-55 °C (-67 °F)

Tin with Nickel barrier

95 MHz

Axial

340 mΩ

1

Ferrite

1 MHz

Q Factor is measured at 7.96 MHz

Tubular

10 %

Tape and Reel, 14 in

0.362 in (9.2 mm)

e3

Tubular Package

Wire

4.7 μH

0.157 in (4 mm)

125 °C (257 °F)

820 mA

LBC2518T4R7MV

Taiyo Yuden

General Purpose Inductor

RF Inductor

2

No

Yes

-40 °C (-40 °F)

41 MHz

Dual Ended

260 mΩ

1

7.96 MHz

20 %

Rectangular Package

Wraparound

4.7 μH

105 °C (221 °F)

510 mA

NLC453232T-100K-PF

TDK

General Purpose Inductor

2

SMT

No

Yes

10

-40 °C (-40 °F)

Dual Ended

500 mΩ

1

Ferrite

2.52 MHz

0.126 in (3.2 mm)

1812

Rectangular

10 %

Tape and Reel, Blister Plastic, 7 in

0.177 in (4.5 mm)

Rectangular Package

Wraparound

10 μH

0.126 in (3.2 mm)

105 °C (221 °F)

550 mA

NR3010T220M

Taiyo Yuden

General Purpose Inductor

Power Inductor

2

SMT

Yes

Yes

-25 °C (-13 °F)

25 MHz

Dual Ended

1.236 Ω

1

Ferrite

100 kHz

0.039 in (1 mm)

1212

Rectangular

20 %

Tape and Reel, Embossed, 7 in

0.118 in (3 mm)

Rectangular Package

One Surface

22 μH

0.118 in (3 mm)

120 °C (248 °F)

350 mA

SPM6530T-1R0M120

TDK

General Purpose Inductor

Power Inductor

2

SMT

Yes

Yes

-40 °C (-40 °F)

Dual Ended

7.81 mΩ

1

Metal

100 kHz

0.118 in (3 mm)

2826

Rectangular

20 %

Tape and Reel, Embossed Plastic, 13 in

0.28 in (7.1 mm)

Rectangular Package

Wraparound

1 μH

0.256 in (6.5 mm)

125 °C (257 °F)

13 A

SRN6045-6R8Y

Bourns

General Purpose Inductor

Power Inductor

2

SMT

Yes

Yes

-40 °C (-40 °F)

Tin/Silver/Copper (Sn96.5Ag3.0Cu0.5)

20 MHz

Dual Ended

47.3 mΩ

1

Ferrite

7.96 MHz

0.177 in (4.5 mm)

2424

Rectangular

30 %

Tape and Reel, Embossed, 13 in

0.236 in (6 mm)

e1

Rectangular Package

One Surface

6.8 μH

0.236 in (6 mm)

125 °C (257 °F)

2.8 A

SRN6045TA-220M

Bourns

General Purpose Inductor

Power Inductor

2

SMT

Yes

Yes

15

-55 °C (-67 °F)

Tin

17 MHz

Dual Ended

96 mΩ

1

Ferrite

1 MHz

0.165 in (4.2 mm)

2424

DC Resistance measured at 20% Tolerance

Rectangular

20 %

Tape and Reel, Embossed, 13 in

0.236 in (6 mm)

e3

Rectangular Package

One Surface

22 μH

AEC-Q200

0.236 in (6 mm)

125 °C (257 °F)

2.3 A

SRU1028-100Y

Bourns

General Purpose Inductor

Power Inductor

2

SMT

Yes

Yes

-40 °C (-40 °F)

Silver Nickel Tin

25 MHz

Dual Ended

40 mΩ

1

Ferrite

100 kHz

0.11 in (2.8 mm)

3939

Rectangular

30 %

Tape and Reel, Embossed, 13 in

0.394 in (10 mm)

e2

Rectangular Package

One Surface

10 μH

0.394 in (10 mm)

125 °C (257 °F)

2.8 A

U08-7

Torotel Products

General Purpose Inductor

RF Inductor

2

Yes

No

-55 °C (-67 °F)

Radial

2.04 Ω

1

Molybdenum Permalloy

1 kHz

1 %

Circular Package

Flexible Lead

20 mH

85 °C (185 °F)

VLS6045EX-6R8M

TDK

General Purpose Inductor

Power Inductor

2

SMT

Yes

Yes

-40 °C (-40 °F)

Silver Platinum

Dual Ended

36 mΩ

1

Ferrite

100 kHz

0.177 in (4.5 mm)

2424

DC Resistance is measured at 30%

Rectangular

20 %

Tape and Reel, Embossed Plastic, 13 in

0.236 in (6 mm)

e4

Rectangular Package

One Surface

6.8 μH

0.236 in (6 mm)

105 °C (221 °F)

3.6 A

XAL4030-332MEB

Coilcraft

General Purpose Inductor

Power Inductor

2

SMT

Yes

Yes

-40 °C (-40 °F)

Tin/Silver (Sn96.5Ag3.5)

43 MHz

Dual Ended

28.6 mΩ

1

Composite

1 MHz

0.122 in (3.1 mm)

1616

Rectangular

20 %

Tape and Reel

0.157 in (4 mm)

e2

Rectangular Package

One Surface

3.3 μH

AEC-Q200

0.157 in (4 mm)

125 °C (257 °F)

6.6 A

XAL6030-102MEC

Coilcraft

General Purpose Inductor

Power Inductor

2

SMT

Yes

Yes

-40 °C (-40 °F)

Tin/Silver

50 MHz

Dual Ended

6.18 mΩ

1

Composite

1 MHz

0.122 in (3.1 mm)

2625

Rectangular

20 %

Tape and Reel, Embossed Plastic, 7 in

0.258 in (6.56 mm)

e2

Rectangular Package

One Surface

1 μH

AEC-Q200

0.25 in (6.36 mm)

125 °C (257 °F)

18 A

36501E20NJTDG

TE Connectivity

General Purpose Inductor

RF Inductor

2

SMT

No

Yes

25

-40 °C (-40 °F)

3000 MHz

Dual Ended

250 mΩ

1

250 MHz

0.024 in (0.61 mm)

0402

Rectangular

5 %

Tape and Reel

0.05 in (1.27 mm)

Rectangular Package

Wraparound

20 nH

0.03 in (0.76 mm)

125 °C (257 °F)

420 mA

74404043220A

Wurth Elektronik

General Purpose Inductor

Power Inductor

2

SMT

Yes

Yes

-40 °C (-40 °F)

26 MHz

Dual Ended

200 mΩ

1

Nickel-Zinc Ferrite

100 kHz

0.098 in (2.5 mm)

1616

Rectangular

20 %

Tape and Reel, Embossed Plastic, 13 in

0.157 in (4 mm)

Rectangular Package

One Surface

22 μH

AEC-Q200

0.157 in (4 mm)

125 °C (257 °F)

1.11 A

74437529203220

Wurth Elektronik

General Purpose Inductor

High Current Inductor

2

SMT

Yes

Yes

-40 °C (-40 °F)

9 MHz

Dual Ended

5.39 mΩ

1

Manganese-Zinc

100 kHz

0.807 in (20.5 mm)

Inductance is measured at 10 mA

Rectangular

20 %

Tray

1.102 in (28 mm)

Rectangular Package

Wraparound

22 μH

AEC-Q200

0.984 in (25 mm)

125 °C (257 °F)

23.9 A

744772047

Wurth Elektronik

General Purpose Inductor

Filter Choke

2

Radial

No

No

0.028 in (0.7 mm)

0.197 in (5 mm)

-40 °C (-40 °F)

Tin over Copper

Radial

18 mΩ

1

0.197 in (5 mm)

Ferrite

1 kHz

0.374 in (9.5 mm)

3131

Unshielded

20 %

0.307 in (7.8 mm)

Cylindrical Package

Wire

4.7 μH

0.307 in (7.8 mm)

125 °C (257 °F)

4 A

74479773210

Wurth Elektronik

General Purpose Inductor

Power Inductor

2

SMT

Yes

Yes

14

-40 °C (-40 °F)

Tin with Nickel barrier

90 MHz

Dual Ended

225 mΩ

1

1 MHz

0.02 in (0.5 mm)

0805

Rectangular

20 %

Tape and Reel, Plastic, 7 in

0.079 in (2 mm)

e3

Rectangular Package

Wraparound

1 μH

0.049 in (1.25 mm)

125 °C (257 °F)

1.2 A

760308101208

Wurth Elektronik

General Purpose Inductor

RF Inductor

2

Radial

No

No

0.008 in (0.2 mm)

-20 °C (-4 °F)

26 MHz

Radial

500 mΩ

1

0.197 in (5 mm)

125 kHz

Wireless

10 %

Disk Package

Flexible Lead

13 μH

0.394 in (10 mm)

105 °C (221 °F)

800 mA

760308101303

Wurth Elektronik

General Purpose Inductor

RF Inductor

2

Radial

No

No

-20 °C (-4 °F)

8 MHz

Radial

500 mΩ

1

125 kHz

0.052 in (1.31 mm)

Coil

10 %

Disk Package

Flexible Lead

47 μH

1.035 in (26.3 mm)

105 °C (221 °F)

1.5 A

82224C

Murata Manufacturing

General Purpose Inductor

Power Inductor

2

SMT

No

Yes

-40 °C (-40 °F)

Dual Ended

8 Ω

1

0.079 in (2 mm)

1310

Rectangular

10 %

Tape and Reel, Embossed, 13 in

0.098 in (2.5 mm)

Rectangular Package

Wraparound

220 μH

0.126 in (3.2 mm)

85 °C (185 °F)

100 mA

B82462G4102M000

TDK

General Purpose Inductor

Power Inductor

2

SMT

Yes

Yes

-55 °C (-67 °F)

Tin

Dual Ended

16 mΩ

1

Ferrite

100 kHz

0.118 in (3 mm)

2525

Rectangular

20 %

Tape and Reel, Blister, 13 in

0.248 in (6.3 mm)

e3

Rectangular Package

One Surface

1 μH

AEC-Q200

0.248 in (6.3 mm)

150 °C (302 °F)

3.4 A

B82477G4105M000

TDK

General Purpose Inductor

Power Inductor

2

SMT

Yes

Yes

-55 °C (-67 °F)

Tin

Dual Ended

1.68 Ω

1

Ferrite

100 kHz

0.315 in (8 mm)

5050

Rectangular

20 %

Tape and Reel, Blister, 13 in

0.504 in (12.8 mm)

e3

Rectangular Package

One Surface

1 mH

0.504 in (12.8 mm)

125 °C (257 °F)

550 mA

B82498F1222J000

TDK

General Purpose Inductor

RF Inductor

2

SMT

No

Yes

20

-55 °C (-67 °F)

Silver Palladium Platinum

330 MHz

Dual Ended

1.6 Ω

1

Ferrite

7.96 MHz

0.055 in (1.4 mm)

0805

Rectangular

5 %

Tape and Reel, Blister, 7 in

0.091 in (2.3 mm)

e4

Rectangular Package

One Surface

2.2 μH

0.067 in (1.7 mm)

125 °C (257 °F)

130 mA

B82498F3471J000

TDK

General Purpose Inductor

RF Inductor

2

SMT

No

Yes

30

-55 °C (-67 °F)

Silver Palladium Platinum

650 MHz

Dual Ended

1.9 Ω

1

Ceramic

50 MHz

0.055 in (1.4 mm)

0805

Q Factor is measured at 100 MHz

Rectangular

5 %

Tape and Reel, Blister, 7 in

0.091 in (2.3 mm)

e4

Rectangular Package

One Surface

470 nH

0.067 in (1.7 mm)

125 °C (257 °F)

190 mA

BRL3225T101K

Taiyo Yuden

General Purpose Inductor

Power Inductor

2

SMT

No

Yes

-40 °C (-40 °F)

Matte Tin Over Nickel

5 MHz

Dual Ended

3 Ω

1

Ferrite

100 kHz

0.067 in (1.7 mm)

1210

DC Resistance measured at 20% Tolerance

Rectangular

10 %

Tape and Reel, Embossed, 7 in

0.126 in (3.2 mm)

e3

Rectangular Package

Wraparound

100 μH

0.098 in (2.5 mm)

105 °C (221 °F)

250 mA

FPT705-230-R

Eaton Corporation

General Purpose Inductor

Power Inductor

4

No

Yes

-40 °C (-40 °F)

Tin with Nickel barrier

Dual Ended

650 μΩ

2

Ferrite

1 MHz

2827

e3

Rectangular Package

Wraparound

230 nH

125 °C (257 °F)

13 A

RLB0914-471KL

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

1.8 MHz

Radial

1.3 Ω

1

Ferrite

796 kHz

Tubular

10 %

Tray

0.472 in (12 mm)

e3

Tubular Package

Wire

470 μH

0.343 in (8.7 mm)

125 °C (257 °F)

560 mA

SBCP-47HY102B

KEMET Corporation

General Purpose Inductor

Power Inductor

2

Radial

No

No

0.02 in (0.5 mm)

0.098 in (2.5 mm)

-20 °C (-4 °F)

Radial

6 Ω

1

0.138 in (3.5 mm)

Ferrite

10 kHz

Cylindrical

10 %

Bulk

0.295 in (7.5 mm)

Cylindrical Package

Wire

1 mH

0.197 in (5 mm)

105 °C (221 °F)

150 mA

SDR0805-471KL

Bourns

General Purpose Inductor

Power Inductor

2

SMT

No

Yes

-40 °C (-40 °F)

Silver/Nickel/Tin

4 MHz

Dual Ended

1.96 Ω

1

Ferrite

796 kHz

0.209 in (5.3 mm)

3131

Rectangular

10 %

Tape and Reel, Embossed Plastic/Paper, 13 in

0.307 in (7.8 mm)

e2

Rectangular Package

One Surface

470 μH

0.307 in (7.8 mm)

125 °C (257 °F)

340 mA

SRN5040-220M

Bourns

General Purpose Inductor

Power Inductor

2

SMT

Yes

Yes

-40 °C (-40 °F)

Tin Silver Copper

11 MHz

Dual Ended

152 mΩ

1

Ferrite

100 kHz

0.157 in (4 mm)

2020

Rectangular

20 %

Tape and Reel, Embossed, 13 in

0.197 in (5 mm)

e1

Rectangular Package

One Surface

22 μH

0.197 in (5 mm)

125 °C (257 °F)

1.4 A

SRP1250-2R2M

Bourns

General Purpose Inductor

Power Inductor

2

SMT

Yes

Yes

-55 °C (-67 °F)

Tin

Dual Ended

5.5 mΩ

1

Iron

100 kHz

0.205 in (5.2 mm)

5050

Rectangular

20 %

Tape and Reel, Embossed, 13 in

0.5 in (12.7 mm)

e3

Rectangular Package

Wraparound

2.2 μH

0.5 in (12.7 mm)

150 °C (302 °F)

20 A

XAL6060-472MEB

Coilcraft

General Purpose Inductor

Power Inductor

2

SMT

Yes

Yes

-40 °C (-40 °F)

Tin/Silver (Sn96.5Ag3.5)

21 MHz

Dual Ended

14.4 mΩ

1

Composite

1 MHz

0.24 in (6.1 mm)

2625

Rectangular

20 %

Tape and Reel

0.258 in (6.56 mm)

e2

Rectangular Package

One Surface

4.7 μH

AEC-Q200

0.25 in (6.36 mm)

125 °C (257 °F)

11 A

74404042330

Wurth Elektronik

General Purpose Inductor

Power Inductor

2

SMT

Yes

Yes

-40 °C (-40 °F)

16 MHz

Dual Ended

460 mΩ

1

100 kHz

0.071 in (1.8 mm)

1615

DC Resistance is measured at 20%

Rectangular

20 %

Tape and Reel, Embossed Plastic, 13 in

0.157 in (4 mm)

Rectangular Package

One Surface

33 μH

AEC-Q200

0.146 in (3.7 mm)

125 °C (257 °F)

650 mA

7447773047

Wurth Elektronik

General Purpose Inductor

B82111E0000C022

TDK

General Purpose Inductor

RF Inductor

2

Axial

No

No

-55 °C (-67 °F)

Tin

Axial

70 mΩ

1

Ferrite

110 MHz

DC Resistance is measured at 20% Tolerance

Tubular

20 %

Tape and Reel, 14 in

1.024 in (26 mm)

e3

Tubular Package

Wire

22 μH

0.276 in (7 mm)

125 °C (257 °F)

3 A

CBC3225T100KRV

Taiyo Yuden

General Purpose Inductor

Power Inductor

2

No

Yes

-40 °C (-40 °F)

23 MHz

Dual Ended

172.9 mΩ

1

100 kHz

10 %

Rectangular Package

Wraparound

10 μH

105 °C (221 °F)

720 mA

CDRH74NP-101MC-B

Sumida

General Purpose Inductor

Power Inductor

2

SMT

Yes

Yes

-40 °C (-40 °F)

Dual Ended

610 mΩ

1

Ferrite

1 kHz

0.177 in (4.5 mm)

2929

Rectangular

20 %

Tape and Reel, 13 in

0.287 in (7.3 mm)

Rectangular Package

Wraparound

100 μH

0.287 in (7.3 mm)

100 °C (212 °F)

600 mA

CVH252009-2R2M

Bourns

General Purpose Inductor

Power Inductor

2

Yes

Yes

-55 °C (-67 °F)

Tin/Nickel

40 MHz

Dual Ended

80 mΩ

1

Ferrite

1 MHz

1008

20 %

e2

Rectangular Package

Wraparound

2.2 μH

125 °C (257 °F)

1.3 A

ETQP5M100YFM

Panasonic

General Purpose Inductor

Power Inductor

2

SMT

Yes

Yes

-40 °C (-40 °F)

Tin

Dual Ended

41.3 mΩ

1

Metal Composite

100 kHz

0.213 in (5.4 mm)

3028

DC Resistance is measured at 10%

Rectangular

20 %

Tape and Reel, Embossed, 13 in

0.295 in (7.5 mm)

e3

Rectangular Package

Wraparound

10 μH

AEC-Q200

0.276 in (7 mm)

150 °C (302 °F)

5.7 A

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.