irc wire and film technologies division general note a subsidiary of tt electronics plc cmo series issue february 2007 irc reserves the right to make changes in product specification without notice or liability. all information is subject to ircs own data and is considered accurate at time of printing. ? irc wire and film technologies division telephone: 828 264 8861 ? facsimile: 828 264 8866 ? website: www.irctt.com ? 736 greenway road boone, north carolina 28607-1860 specifcations ? power ratings from 1/4w to 9w ? stable performance in harsh environments ? superior fame retardant coating ? high purity ceramic core ? meets eia-rc2655a requirements ? non-inductive type available cmo series commercial grade metal oxide resistor irc type power rating at 70c (w) resistance range* (ohms) tolerance (%) tcr (ppm/oc) max. working voltage (v) max. overload voltage (v) dielectric withstanding voltage (v) standard size cmo-1/4 0.25 0.3 - 50k 2, 5, 10 350 250 400 250 cmo-1/2 0.5 0.3 - 50k 2, 5, 10 250 400 250 cmo-1 1 0.3 - 50k 2, 5, 10 350 600 350 cmo-2 2 0.3 - 50k 2, 5, 10 350 600 350 cmo-3 3 5 - 100k 2, 5, 10 500 800 500 cmo-5 5 5 - 150k 2, 5, 10 750 1000 750 cmo-7 7 20 - 150k 2, 5, 10 750 1000 750 cmo-8 8 30 - 200k 2, 5, 10 750 1000 750 cmo-9 9 50 - 200k 2, 5, 10 750 1000 750 miniature size cmo-1/2s 0.5 0.3 - 50k 2, 5, 10 350 250 400 250 cmo-1s 1 0.3 - 50k 2, 5, 10 350 600 350 cmo-2s 2 0.3 - 50k 2, 5, 10 350 600 350 cmo-3s 3 0.3 - 50k 2, 5, 10 350 600 350 cmo-5ss 5 5 - 100k 2, 5, 10 500 800 500 cmo-5s 5 5 - 150k 2, 5, 10 500 800 500
irc wire and film technologies division general note a subsidiary of tt electronics plc cmo series issue february 2007 irc reserves the right to make changes in product specification without notice or liability. all information is subject to ircs own data and is considered accurate at time of printing. ? irc wire and film technologies division telephone: 828 264 8861 ? facsimile: 828 264 8866 ? website: www.irctt.com ? 736 greenway road boone, north carolina 28607-1860 environmental performance short-time overload standard size, ? r/r (1%+0.05 ? ), with no evidence of mechanical damage. miniature size, ? r/r (2%+0.05 ? ), with no evidence of mechanical damage. dielectric withstanding voltage no evidence of fashover, mechanical damage, arcing or insulation breakdown. pulse overload standard size, ? r/r (2%+0.05 ? ), with no evidence of mechanical damage. miniature size, ? r/r (5%+0.05 ? ), with no evidence of mechanical damage. terminal strength no evidence of mechanical damage. resistance to soldering heat ? 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 (2%+0.05 ? ), with no evidence of mechanical damage. humidity (steady state) ? r/r (2%+0.05 ? ), with no evidence of mechanical damage. load life in humidity ? r/r: 5% for <100k ? ; 10% for 100k ? . load life ? r/r: 5% for <100k ? ; 10% for 100k ? . flame retardant no evidence of faming or arcing. cmo series commercial grade metal oxide resistor
general note a subsidiary of tt electronics plc cmo series issue february 2007 irc reserves the right to make changes in product specification without notice or liability. all information is subject to ircs own data and is considered accurate at time of printing. ? irc wire and film technologies division telephone: 828 264 8861 ? facsimile: 828 264 8866 ? website: www.irctt.com ? 736 greenway road boone, north carolina 28607-1860 irc wire and film technologies division cmo series commercial grade metal oxide resistor dimensions (mm) ? standard gray base color for standard size product; blue color for miniature size product ? standard non-fammable coating h l h d o d irc type d (max.) l (max.) d (0.02) h (3) standard size 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 miniature sizes 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
irc wire and film technologies division general note a subsidiary of tt electronics plc cmo series issue february 2007 irc reserves the right to make changes in product specification without notice or liability. all information is subject to ircs own data and is considered accurate at time of printing. ? irc wire and film technologies division telephone: 828 264 8861 ? facsimile: 828 264 8866 ? website: www.irctt.com ? 736 greenway road boone, north carolina 28607-1860 ordering data sample part no. cmo 2 1001 j lf ammo irc type power rating (see specs table) resistance value (eia 4-digit code) ( 100 - first 3 significant digits plus 4th digit multiplier) example: 100 = 1000; 1000 = 1001 150k = 1503 ( > 100 - ?r? is used to designate decimal) example: 10 = 51r0; 1 = 1r00 0.25 = r250 tolerance (eia format) g = 2% j = 5% k = 10% rohs- compliance lf = rohs compliant construction packaging blk = bulk packaging ammo = ammo packaging lt = lead tape tr = tape and reel temperature rise chart rated load (%) temperature rise (c) 250 200 150 100 50 0 7 w, 8 w, 9 w 5 w 3 w 2 w 1w 1/4w, 1/2w 25 50 75 -55c d e r ati n g c u r v e 100 80 60 40 20 0 70c mor 1/4w~1/2w cmo 1/4w-1/2w mor 1w~9w cmo 1w-9w 1 30c 235c ambient temperature ( c) percent rated load (%) -60 -40 -20 0 20 40 60 80 1 00 1 20 1 40 1 60 1 80 200 240 performance curves specify type, resistance, tolerance, rohs-compliance and packaging. this example is for a metal oxide resistor, 2-watt, 1000 ? resistor.
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