Inductors

Epoxy Conformal Coated

Uniform Roll Coated

IR

Vishay Dale

www.vishay.com

For technical questions contact magnetics@vishay.com

Document Number: 34054

28

Revision: 31-Jan-06

ELECTRICAL SPECIFICATIONS

Inductance Tolerance: ± 1 %, ± 3 %, ± 5 %, ± 10 %, ± 20 %

Other tolerances available on request

Insulation Resistance: 1000 Megohm minimum per

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

Dielectric Strength: 1000 VAC per MIL-STD-202, Method 301

MATERIAL SPECIFICATIONS

Coating: Epoxy-uniform roll coated

Lead: Tinned copper

FEATURES

• Flame-retardant coating

• Color band identification

• Excellent environmental characteristics

• Uniform coating is excellent for automatic

insertion

• Comparable in quality to molded chokes at a lower price

• Epoxy coating is more durable than lacquer coated

models, yet is priced comparably

MECHANICAL SPECIFICATIONS

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

Method 211, Test Condition A

Weight: IR-2 = 0.30 grams maximum

IR-4 = 0.65 gram maximum

TEST EQUIPMENT*

• H/P 4342A Q-Meter

• Measurements Corporation Megacycle Meter, Model 59

• Whearstone bridge

* Test procedures per MIL-PRF-15305

DIMENSIONS in inches [millimeters]

MODEL

A (Max.)

B (Max.)

C (Max.)

D

IR-2

0.260

0.120

0.330

0.0200 ± 0.0015

[6.60]

[3.05]

[8.38]

[0.508 ± 0.038]

IR-4

0.385

0.180

0.440

0.025 ± 0.002

[9.78]

[4.57]

[11.18]

[0.635 ± 0.051]

D

C

Max.

B Max.

A

Max.

1.25 [31.75] Min.

1.63 [41.28] Max.

ENVIRONMENTAL PERFORMANCE

TEST

CONDITIONS

SPECIFICATIONS

Barometric

Pressure

Test Condition C

MIL-STD-202, Method 105

Thermal Shock

Test Condition A-1

MIL-STD-202, Method 107

Flammability

-

MIL-STD-202, Method 111

Overload

-

MIL-PRF-15305

Low

Temperature

-

MIL-PRF-15305

Resistance to

Soldering Heat

Test Condition A

MIL-STD-202, Method 210

Resistance to

Solvents

-

MIL-STD-202, Method 215

MAXIMUM TEMPERATURE RISE

IR-2

OPERATING TEMPERATURE RANGE

0.1 µH to 1.0 µH = + 35 °C at + 90 °C ambient

- 55 °C to 125 °C

1.2 µH to 27 µH = + 15 °C at + 90 °C ambient

- 55 °C to 105 °C

33 µH to 1000 µH = + 15 °C at + 90 °C ambient

- 55 °C to 105 °C

IR-4

0.15 µH to 4.7 µH = + 35 °C at + 90 °C ambient

- 55 °C to 125 °C

5.6 µH to 33 µH = + 15 °C at + 90 °C ambient

- 55 °C to 105 °C

36 µH to 240 µH = + 15 °C at + 90 °C ambient

- 55 °C to 105 °C

270 µH to 1800 µH = + 35 °C at + 90 °C ambient

- 55 °C to 125 °C

RoHS

COMPLIANT