General Note

IRC reserves the right to make changes in product specification without notice or liability.

All information is subject to IRC’s own data and is considered accurate at time of going to print.

A subsidiary of

TT electronics plc

• 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

General Purpose

Carbon Film Resistors

Electrical Data

CF Series

Environmental Data

Tested per MIL-STD-202

CF 1/8

CF 1/4

CF 1/2

Power Rating (watts) at 70°C

1/8

1/4

1/2

Derated to 0 Load at

155°C

Maximum Working Voltage

200V

250V

350V

Operating Temperature Range

-55°C to +155°C

Resistance Range

(±5%)

1.0

Ω - 22 meg

(±2%)

10

Ω - 1 meg

10

Ω - 4.7 meg

10

Ω - 4.7 meg

CF 1/8

CF 1/4

CF 1/2

Moisture Resistance

<100K ± (3% + 0.05

Ω)

>100K ± (5% + 0.05

Ω)

Thermal Shock

±0.5%

Load life at 70°C - 1000 hours

<100K ± (2% + 0.05

Ω)

<100K ± (3% + 0.05

Ω)

Shock and Vibration

±0.2%

Resistance to Soldering Heat

±0.5%

Terminal Strength

±0.5%

Dielectric Withstand Voltage

300 volts RMS min.

500 volts RMS min.

700 volts RMS min.

Maximum Pulse Voltage

400V

600V

700V

Insulation Resistance

10,000 meg min.

Voltage Coefficient

-10 ppm/Vmax.

Short Time Overload

±0.75%

CF Series Issue August 2008 Sheet 1 of 3