Commercial Grade Metal Oxide Resistor CMO Series • • • • • • High purity ceramic core Non-inductive type available Superior flame retardant coating Power ratings from 1/4W to 9W Meets EIA-RC2655A requirements Stable performance in harsh environments Electrical Data Power Rating at 70°C (W) Resistance Range* (Ohms) Max. Working Voltage (V) Max. Overload Voltage (V) Dielectric Withstanding Voltage (V) CMO-1/4 0.25 0.3 - 50K 250 400 250 CMO-1/2 0.5 0.3 - 50K 250 400 250 CMO-1 1 0.3 - 50K 350 600 350 CMO-2 2 0.3 - 50K 350 600 350 CMO-3 3 5 - 100K 500 800 500 CMO-5 5 5 - 150K 750 1000 750 CMO-7 7 20 - 150K 750 1000 750 CMO-8 8 30 - 200K 750 1000 750 CMO-9 9 50 - 200K 750 1000 750 0.5 0.3 - 50K 250 400 250 CMO-1S 1 0.3 - 50K 350 600 350 CMO-2S 2 0.3 - 50K 350 600 350 IRC Type Tolerance (±%) TCR (±ppm/°C) Standard Size 2, 5, 10 350 Miniature Size CMO-1/2S 2, 5, 10 350 CMO-3S 3 0.3 - 50K 350 600 350 CMO-5SS 5 5 - 100K 500 800 500 CMO-5S 5 5 - 150K 500 800 500 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. Wire and Film Technologies Division • 4222 South Staples Street • Corpus Christi Texas 78411 USA Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com A subsidiary of TT electronics plc CMO Series Issue September 2008 Sheet 1 of 4 Commercial Grade Metal Oxide Resistor Environmental Data Short-time overload ∆R/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 ∆R/R ≤(±1% + 0.05Ω), with no evidence of mechanical damage. Pulse Overload ∆R/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 ∆R/R ≤(±1% + 0.05Ω), with no evidence of mechanical damage. Load life in humidity Standard type: ∆R/R ±3% for <100KΩ, ±5% for ≥100KΩ; Load life Standard type: ∆R/R ±1.5% Flame retardant type: R/R ±5% Wire and Film Technologies Division • 4222 South Staples Street • Corpus Christi Texas 78411 USA Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com CMO Series Issue September 2008 Sheet 2 of 4 Commercial Grade Metal Oxide Resistor Physical Data d D H L H Dimensions (mm) IRC Type Standard Size Miniature Size D (max.) L (max.) d (±0.02) H (±3) CMO-1/4 2.5 7.5 0.6 28 CMO - 1/2 4.0 10.0 0.6 28 CMO-1 5.0 12.0 0.7 28 CMO-2 5.5 16.0 0.8 28 CMO-3 6.5 17.5 0.8 28 CMO-5 8.5 26.0 0.8 38 CMO-7 8.5 32.0 0.8 38 CMO-8 8.5 41.0 0.8 38 CMO-9 8.5 54.0 0.8 38 CMO - 1/2S 3.0 7.5 0.6 28 CMO-1 4.5 10.0 0.7 28 CMO-2 5.0 12.0 0.7 28 CMO-3 5.5 16.0 0.8 28 CMO-5SS 6.5 17.5 0.8 28 CMO-5S 8.0 25.0 0.8 38 • Standard gray base color for standard size product; Blue color for miniature size product • Standard non-flammable coating Wire and Film Technologies Division • 4222 South Staples Street • Corpus Christi Texas 78411 USA Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com CMO Series Issue September 2008 Sheet 3 of 4 Commercial Grade Metal Oxide Resistor Percent Rated Load (%) Power Derating Curve 100 130°C 70°C -55°C 235°C 80 60 CMO 1W - 9W 40 CMO 1/4W - 1/2W 20 0 -60 -40 -20 0 20 40 60 80 100 120 140 160 180 200 240 Ambient Temperature (°C) Temperature Rise (°C) Temperature Rise Chart 250 7W, 8W, 9W 5W 3W 2W 200 150 1W 100 1/4W, 1/2W 50 0 25 50 75 Ordering Data Specify type, resistance, tolerance, RoHS-Compliance and packaging. This example is for a Metal Oxide Resistor, 2-watt, 1000Ω resistor. Sample Part No. CMO 2 1001 J LF TR IRC Type Power Rating (See specs table) Resistance Value (EIA 4-digit code) (≥100Ω - First 3 significant digits plus 4th digit multiplier) Example: 100Ω = 1000, 1000Ω = 1001; 150KΩ = 1503 (>100Ω - "R" is used to designate decimal) Example: 10Ω = 51R0, 1Ω = 1R00, 0.25Ω = R250 Tolerance (EIA format) G = ±2%; J = ±5%; K = ±10% 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 CMO Series Issue September 2008 Sheet 4 of 4