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© IRC Advanced Film Division

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

Commercial Grade

Metal Film Resistor

Sample Part No.

IRC Type

CMF - Metal Film Resistor

Power Rating

(See specs table)

Resistance Value (EIA 4-digit code)

(

≥100Ω - First 3 significant digits plus 4th digit multiplier)

Example: 100 ohms = 1000, 1000 ohms = 1001

(>100

Ω - "R" is used to designate decimal)

Example: 10

Ω = 10R0, 1Ω = 1R00, 51Ω = 51R0

Tolerance

F = ±1%; G = ±2%; J = ±5%

RoHS- compliance

LF = RoHS compliant construction

Packaging

TR = tape and reel only

Ordering Data

CMF

- 1

1001

F

LF

TR

Specify type, resistance, tolerance, RoHS-Compliance and packaging.

This example is for a Metal Film Resistor, 1-watt, 1000

Ω resistor.

Derating Curve

-55°C

+70°C

+155°C

-60

-30

0

30

60

90

120 150 180

100

80

60

40

20

Ambient Temperature (°C)

Hot Spot Temperature Curve

25

50

75

100

200

150

100

50

0

CMF-200

CMF-100

CMF-50

CMF-25

CMF-12

CMF Series Issue May 2009 Sheet 3 of 3

Measuring position