lm Resistors Resistor Commercial Grade Metal Film Resistor Commercial Grade CMF Series Film Resistor Metal 1/8W Metal film resistor Conformal coating Power ratings from 1/8W to 3W CMF Series Resistance range from 10Ω to 1MΩ to 3W • Metal film resistor om 10Ω• to 1MΩcoating Conformal Not Recommended for New Designs • Power ratings from 1/8W to 3W • Resistance range from 10Ω to 1MΩ ata Electrical Data IRC Type Power Rating at 70°C (W) Resistance Range (Ohms) Power Resistance ating at Standard Size Range 0°C (W) (Ohms) 0.125 0.25 0.5 1 2 3 Tolerance (±%) Tolerance (±%) TCR (±ppm/°C) TCR (±ppm/°C) Max. Working Voltage (V) Max. Overload Voltage (V) Dielectric Withstanding Voltage (V) 400 Max. Working Voltage (V) Max. Overload Voltage (V) CMF-1/8 0.125 200 400 CMF-1/4 0.25 250 500 500 CMF-1/2 0.5 350 700 700 500 200 1000 1000 1000 1000 10 - 1M 1 100 CMF-1 1 CMF-2 2 500 CMF-3 3 500 10 - 1M Data Environmental 1 100 250 1000 500 1000 350 700 500 1000 500 1000 500 1000 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 ding voltage ΔR/R ≤(±0.5% 0.05Ω), with evidence Standard + type: ΔR/R ±1.5% Flameno retardant type: R/R of ±5%mechanical damage. No evidence of flashover, mechanical damage, arcing or insulation General Note General Note IRC reserves the right to make changes in product specification without notice or liability. All is subject to IRC’s own data and is considered at time of going to print. TTinformation Electronics reserves the right to make changes accurate in product specification without notice or liability. BI Technologies IRC Welwyn No evidence of mechanical damage. All information is subject to TT Electronics’ own data and is considered accurate at time of going to print. © IRC Advanced Film Division • 4222 South Staples Street • Corpus Christi Texas 78411 USA Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com ering heat © TT Electronics plc W V 400 Short-time overload ntal Data d All parts are Pb-free and comply with EU Directive 2011/65/EU (RoHS2) A subsidiary of TT electronics plc www.ttelectronics.com/resistors CMF Series Issue May 2009 Sheet 1 of 3 ΔR/R ≤(±1% + 0.05Ω), with no evidence of mechanical damage. 09.17 Commercial Grade Commerical Grade Resistor Metal Film Metal Film Resistor CMF Series Not Recommended for New Designs Physical Data d D H L H Dimensions (mm) Standard Size IRC Type D (max.) L (max.) d (±0.02) H (±3) CMF-1/8 1.85 3.5 0.5 28 CMF-1/4 2.5 6.8 0.6 28 CMF-1/2 3.5 10.0 0.6 28 CMF-1 5.0 12.0 0.7 28 CMF-2 5.5 16.0 0.8 28 CMF-3 6.5 17.5 0.8 28 © IRC Advanced Film Division • 4222 South Staples Street • Corpus Christi Texas 78411 USA Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com General Note TT Electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT Electronics’ own data and is considered accurate at time of going to print. CMF Series Issue May 2009 Sheet 2 of 3 BI Technologies IRC Welwyn www.ttelectronics.com/resistors © TT Electronics plc 09.17 Commercial Grade Metal Film Resistor CMF Series Not Recommended for New Designs Commerical Grade Metal Film Resistor Derating Curve Percent Rated Load (%) 100 Hot Spot Temperature Curve +155°C +70°C -55°C 200 Measuring position 80 150 CMF-200 60 100 CMF-100 50 CMF-50 CMF-25 CMF-12 40 20 -60 -30 0 30 60 90 0 120 150 180 25 50 75 100 Ambient Temperature (°C) Ordering Data Specify type, resistance, tolerance, RoHS-Compliance and packaging. This example is for a Metal Film Resistor, 1-watt, 1000Ω resistor. Sample Part No. CMF - 1 1001 F LF TR 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 (>100Ω - "R" is used to designate decimal) Example: 10Ω = 10R0, 1Ω = 1R00, 51Ω = 51R0 Tolerance F = ±1%; G = ±2%; J = ±5% RoHS- compliance LF = RoHS compliant construction Packaging TR = tape and reel only © IRC Advanced Film Division • 4222 South Staples Street • Corpus Christi Texas 78411 USA Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com General Note TT Electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT Electronics’ own data and is considered accurate at time of going to print. CMF Series Issue May 2009 Sheet 3 of 3 BI Technologies IRC Welwyn www.ttelectronics.com/resistors © TT Electronics plc 09.17