IRF

Vishay Dale

Document Number: 34055

For technical questions contact magnetics@vishay.com

www.vishay.com

Revision: 07-Aug-07

31

Inductors

Epoxy Conformal Coated

Uniform Roll Coated

ELECTRICAL SPECIFICATIONS

Inductance Tolerance: ± 5 %, ± 10 %, ± 20 %

Other tolerances available on request

Insulation Resistance: 1000 Megohm minimum per

MIL-STD-202, Method 302, Test Condition B

Operating Temperature: - 55 °C to + 105 °C

MATERIAL SPECIFICATIONS

Coating: Epoxy-uniform roll coated

Lead: Tinned copper

Core: Ferrite

MECHANICAL SPECIFICATIONS

Terminal Strenght: 5 pounds pull per MIL-STD-202,

Method 211, Test Condition A

Weight: IRF-1 = 0.3 gram maximum

IRF-3 = 0.6 gram maximum

TEST EQUIPMENT*

• H/P 4342A Q-Meter

• Measurements Corporation Megacycle Meter, Model 59

• Whearstone bridge

* Test procedures per MIL-PRF-15305

FEATURES

• Flame-retardant coating and color band identification

• Uniform coating is excellent for automatic insertion

• Available in bulk, ammo and reel pack per EIA

RS/296

• Superior electrical specifications high Q and self resonant

frequency, low DC resistance, high rated DC current

* Measured with full length lead. ** Rated DC Current based on maximum temperature rise of 15 °C at + 90 °C ambient.

DIMENSIONS in inches [millimeters]

MODEL

A (Max.)

B (Max.)

C (Max.)

D

IRF-1

0.260

0.120

0.330

0.0200 ± 0.0015

[6.60]

[3.05]

[8.38]

[0.508 ± 0.038]

IRF-3

0.385

0.165

0.410

0.025 ± 0.002

[9.78]

[4.19]

[10.41]

[0.635 ± 0.051]

ENVIRONMENTAL PERFORMANCE

TEST

CONDITIONS

SPECIFICATIONS

Flammability

-

MIL-STD-202, Method 111

Overload

-

MIL-PRF-15305

Resistance to

Soldering Heat

Test Condition A

MIL-STD-202, Method 210

Resistance to

Solvents

-

MIL-STD-202, Method 215

D

C

Max.

B Max.

A

Max.

1.25 [31.75] Min.

1.63 [41.28] Max.

STANDARD ELECTRICAL SPECIFICATIONS

MODEL

IND.

(µH)

TOL.

Q

MIN.

TEST FREQ.

L & Q

(MHz)

SELF-RESONANT*

FREQ MIN.

(MHz)

DCR

MAXIMUM

(Ohms)

RATED DC**

CURRENT

(mA)

IRF-1

0.10

± 20 %

40

25.0

400.0

0.06

1350

IRF-1

0.12

± 20 %

40

25.0

400.0

0.06

1270

IRF-1

0.15

± 20 %

40

25.0

400.0

0.07

1200

IRF-1

0.18

± 20 %

40

25.0

400.0

0.075

1155

IRF-1

0.22

± 20 %

40

25.0

380.0

0.075

1150

IRF-1

0.27

± 20 %

40

25.0

360.0

0.08

1110

IRF-1

0.33

± 20 %

40

25.0

350.0

0.08

1110

IRF-1

0.39

± 20 %

40

25.0

320.0

0.09

1000

IRF-1

0.47

± 20 %

40

25.0

300.0

0.10

1000

IRF-1

0.56

± 20 %

40

25.0

280.0

0.11

950

IRF-1

0.68

± 20 %

40

25.0

250.0

0.12

900

IRF-1

0.82

± 20 %

40

25.0

200.0

0.12

900

IRF-1

1.0

± 10 %

50

25.0

180.0

0.15

815

IRF-1

1.2

± 10 %

50

7.9

165.0

0.18

740

IRF-1

1.5

± 10 %

50

7.9

150.0

0.20

700

IRF-1

1.8

± 10 %

50

7.9

125.0

0.23

655

IRF-1

2.2

± 10 %

50

7.9

115.0

0.25

630

IRF-1

2.7

± 10 %

50

7.9

100.0

0.28

595

IRF-1

3.3

± 10 %

50

7.9

90.0

0.30

575

IRF-1

3.9

± 10 %

50

7.9

80.0

0.32

555

IRF-1

4.7

± 10 %

50

7.9

75.0

0.35

530

IRF-1

5.6

± 10 %

50

7.9

65.0

0.40

500

IRF-1

6.8

± 10 %

50

7.9

60.0

0.45

470

IRF-1

8.2

± 10 %

50

7.9

55.0

0.55

425

IRF-1

10.0

± 10 %

50

7.9

50.0

0.72

370

IRF-1

12.0

± 10 %

50

2.5

40.0

0.80

350

IRF-1

15.0

± 10 %

50

2.5

35.0

0.88

335

IRF-1

18.0

± 10 %

50

2.5

30.0

1.0

315

IRF-1

22.0

± 10 %

50

2.5

25.0

1.2

285

IRF-1

27.0

± 10 %

50

2.5

20.0

1.35

270

RoHS

COMPLIANT