• 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

Dimensions (Inches and (mm))

Nominal

Size

Body Length

BL

Body Diameter

BD

Lead Length

LL

Lead Diameter

LD

Clean Lead

1/8 watt

0.150 ±0.020

(3.8 ±0.5)

0.066 ±0.008

(1.7 ±0.2)

1.00 ±0.125

(25.4 ±3.2)

0.016 ±0.002

(0.41 ±0.05)

0.225

(5.7)

1/4 watt

0.250 ±0.015

(6.4 ±0.4)

0.090 ±0.008

(2.3 ±0.2)

1.50 ±0.125

(38.1 ±3.2)

0.025 ±0.002

(0.64 ±0.05)

0.310

(7.9)

1/2 watt

0.390 ±0.010

(9.9 ±0.3)

0.140 ±0.008

(3.6 ±0.2)

1.50 ±0.125

(38.1 ±3.2)

0.025 ±0.002

(0.64 ±0.05)

0.450

(11.4)

Physical Data

LL

LD

BL

BD

Sample Part No.

MIL Style

RL = Fixed Film Resistor

High stability

Power Rating

50 = 1/20 watt

55 = 1/10 watt

60 = 1/8 watt

T.C. Characteristics

D = ±100ppm/°C

C = ±50ppm/°C

E = ±25ppm/°C

Resistance

First three digits represent significant figures;

fourth digit is number of zeros.

Tolerance

F = ±1%, D = ±0.5%, B = ±0.1%

Ordering Data

RN

55

D

1002

F

100

80

60

0

0

125

150

175

Ambient Temperature (°C)

RN55D, 60D

40

20

165

MIL Spec. Power Derating Chart

Precision Mil-Qualified

Metal Glaze™ Resistor

RN55C, 60C

& 50C, RN55E,

60E

RN Series Issue March 2009 Sheet 2 of 2