• 4222 South Staples Street • Corpus Christi Texas 78411 USA

Wire and Film Technologies Division

Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com

Physical Data

Beryllia Core, Silicone Coated

Power Resistors MIL-R-26 (RW)

& Commercial Industrial Styles

IRC

Style

Rated

Wattage

Dimensions

Lead

Diam. C

AWG

IRC

Max

Resistance

Metric Dimensions

Dimensions

Lead

U

V

Length

A

Diameter

B

Length

A

Diameter

B

Dia. C

mm

B-1

1.0

.250 ± .032

.085 ± .020

#24

2.0K

6.4 ± 0.8

2.2 + 0.5

0.5

B-2

1.5

2.0

.312 ± .062

.078 ± .032

#24

3.4K

7.9 ± 1.6

2.0 + .08

0.5

B-3

2.25

2.75

.406 ± .032

.094 ± .032

#24

6.5K

10.3 ± 0.8

2.4 + .08

0.5

B-5

4.0

5.0

.562 ± .062

.188 ± .032

#20

22K

14.3 ± 1.6

4.8 + .08

0.8

B-5A

4.5

6.5

.812 ± .062

.188 ± .032

#20

34K

20.6 ± 1.6

4.8 + .08

0.8

B-5C

5.0

7.0

.500 ± .062

.218 ± .032

#18

18K

12.7 ± 1.6

5.5 + .08

1.0

B-6

6.0

8.0

.625 ± .062

.250 ± .032

#18

40K

15.7 ± 1.6

6.4 + .08

1.0

B-10

7.0

10.0

.875 ± .062

.312 ± .032

#18

54K

22.2 ± 1.6

7.9 + .08

1.0

B-12

10.0

12.0

1.218 ± .062

.312 ± .032

#18

75K

31 ± 1.6

7.9 + .08

1.0

B-15

15.0

18.0

1.780 ± .062

.375 ± .032

#18

150K

45.2 ± 1.6

7.9 + .08

1.0

A

Length

D

C dia.

Lead Length

1.375 (34.9 mm) Minimum

B

B Series Issue September 2008 Sheet 2 of 3