CMF Series Commercial Grade Metal Film Resistor * * * * * * IRC Wire and Film Technologies Division EIA standard color coding Low noise & voltage coefficient Flame retardant type available Low temperature coefficient range Epoxy coating on metal film provides superior moisture protection Nichrome resistive element provides stable performance Specifications IRC Type Power Rating at 70C (W) Resistance Range (Ohms) 0.125 0.25 0.5 1 2 3 10 - 1M 10 - 1M 10 - 1M 10 - 1M 10 - 1M 10 - 1M Tolerance (%) TCR (ppm/C) Max. Working Voltage (V) Max. Overload Voltage (V) 200 250 350 500 500 500 400 500 700 1000 1000 1000 Dielectric Withstanding Voltage (V) Standard Size CMF-1/8 CMF-1/4 CMF-1/2 CMF-1 CMF-2 CMF-3 1 1 1 1 1 1 100 100 100 100 100 100 400 500 700 1000 1000 1000 Environmental Performance Short-time overload R/R (0.5%+0.05), 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 R/R (1%+0.05), with no evidence of mechanical damage. Pulse Overload R/R (1%+0.05), with no evidence of mechanical damage. Solderability Minimum 95% coverage. Resistance to solvent No deterioration of protective coating and markings. Temperature cycling R/R (1%+0.05), with no evidence of mechanical damage. Load life in humidity Standard type: R/R 3% for <100K, 5% for 100K; Load life Standard type: R/R 1.5% Flame retardant type: R/R 5% 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 printing. (c) IRC Wire and Film Technologies Division * 736 Greenway Road Boone, North Carolina 28607-1860 Telephone: 828 264 8861 * Facsimile: 828 264 8866 * Website: www.irctt.com A subsidiary of TT electronics plc CMF Series Issue February 2007 CMF Series Commercial Grade Metal Film Resistor IRC Wire and Film Technologies Division Dimensions (mm) d D H IRC Type Standard Size CMF-1/8 CMF-1/4 CMF-1/2 CMF-1 CMF-2 CMF-3 Performance Curves Percent rated load (%) -55C +70C D (max.) L (max.) 1.85 2.5 3.5 5.0 5.5 6.5 3.5 6.8 10.0 12.0 16.0 17.5 d (0.02) H (3) 0.5 0.6 0.6 0.7 0.8 0.8 28 28 28 28 28 28 +155C Specify type, resistance, tolerance, RoHS-Compliance and packaging. This example is for a Metal Film Resistor, 1-watt, 1000 resistor. Sample Part No. 80 CMF 1 1001 F LF AMMO IRC Type CMF - Metal Film Resistor 60 Power rating (See specs table) 40 20 -60 -30 0 30 60 90 120 150 180 Ambient temperature (C) Hot Spot Temperature 200 Surface Temp. Rise (C) H Ordering Data Derating Curve 100 L Measuring position 150 MF-200 100 MF-100 MF-50 MF-25 MF-12 50 0 25 50 75 Resistance Value (EIA 4-digit code) (100 - First 3 significant digits plus 4th digit multiplier) Example: 100 = 1000; 1000 = 1001 (>100 - "R" is used to designate decimal) Example: 10 = 10R0; 1 = 1R00 51 = 51R0 Tolerance (EIA format) F = 1% G = 2% J = 5% RoHS- compliance LF = RoHS compliant construction Packaging AMMO = ammo packaging TR = tape and reel 100 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 printing. (c) IRC Wire and Film Technologies Division * 736 Greenway Road Boone, North Carolina 28607-1860 Telephone: 828 264 8861 * Facsimile: 828 264 8866 * Website: www.irctt.com A subsidiary of TT electronics plc CMF Series Issue February 2007