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

© IRC Advanced Film Division

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

Commercial Grade

Metal Film Resistor

Electrical Data

IRC Type

Power

Rating at

70°C (W)

Resistance

Range

(Ohms)

Tolerance

(±%)

TCR

(±ppm/°C)

Max.

Working

Voltage (V)

Max.

Overload

Voltage (V)

Dielectric

Withstanding

Voltage (V)

Standard Size

CMF-1/8

0.125

10 - 1M

1

100

200

400

400

CMF-1/4

0.25

250

500

500

CMF-1/2

0.5

350

700

700

CMF-1

1

500

1000

1000

CMF-2

2

500

1000

1000

CMF-3

3

500

1000

1000

CMF Series

Ω to 1MΩ

Environmental Data

Short-time overload

ΔR/R ≤(±0.5% + 0.05Ω), with no evidence of mechanical damage.

Dielectric withstanding voltage

No evidence of flashover, mechanical damage, arcing or insulation breakdown.

Terminal strength

No evidence of mechanical damage.

Resistance to Soldering heat

ΔR/R ≤(±1% + 0.05Ω), with no evidence of mechanical damage.

Pulse Overload

ΔR/R ≤(±1% + 0.05Ω), with no evidence of mechanical damage.

Solderability

Minimum 95% coverage.

Resistance to solvent

No deterioration of protective coating and markings.

Temperature cycling

ΔR/R ≤(±1% + 0.05Ω), with no evidence of mechanical damage.

Load life in humidity

Standard type:

ΔR/R ±3% for <100KΩ, ±5% for ≥100KΩ;

Load life

Standard type:

ΔR/R ±1.5% Flame retardant type: R/R ±5%

CMF Series Issue May 2009 Sheet 1 of 3