cw www.vishay.com vishay dale revision: 01-feb-12 1 document number: 30215 for technical questions, contact: ww2aresistors@vishay.com this document is subject to change without notice. the products described herein and this document are subject to specific disclaimers, set forth at www.vishay.com/doc?91000 wirewound resistors, commercial power, silicone coated, axial lead features ? high performance for low cost ? high temperature silicone coating ? complete welded construction ? excellent stability in operation ? high power to size ratio ? compliant to rohs directive 2002/95/ec notes * pb containing terminatio ns are not rohs compliant, exemptions may apply ** please see document vishay material category policy: www.vishay.com/doc?99902 notes (1) vishay dale cw models have two power ratings, depending on operating temperature and stability requirements (2) 3 % tolerance available (3) higher values available on request standard electrical specifications global model historical model power rating (1) p 25 c w characteristic u + 250 c power rating (1) p 25 c w characteristic v + 350 c resistance range ? tolerance % (2) weight (max.) g cw1/2 cw-1/2 0.5 - 0.1 to 1.77k 5, 10 0.21 cw001 cw-1 1.0 - 0.1 to 6.37k 5, 10 0.34 cw01m cw-1m 1.0 - 0.1 to 3.3k 5, 10 0.3 cw002 cw-2 4.0 5.5 0.1 to 28.7k 5, 10 2.1 cw02m cw-2m 3.0 3.75 0.1 to 12k 5, 10 0.65 cw02b cw-2b 3.0 3.75 0.1 to 15k 5, 10 0.7 cw02b...13 cw-2b-13 4.0 6.0 0.1 to 10.89k (3) 5, 10 0.9 cw02c cw-2c 2.5 3.25 0.1 to 19.9k 5, 10 1.8 cw02c...14 cw-2c-14 2.5 3.25 0.1 to 19.9k 5, 10 1.2 cw005 cw-5 5.0 6.5 0.1 to 58.5k 5, 10 4.2 cw005...2 cw-5-2 4.0 5.0 0.1 to 40.3k 5, 10 4.2 cw005...3 cw-5-3 5.0 6.5 0.1 to 58.5k 5, 10 4.2 cw007 cw-7 7.0 9.0 0.1 to 95.2k 5, 10 4.7 cw010 cw-10 10.0 13.0 0.1 to 167k 5, 10 9.0 cw010...3 cw-10-3 10.0 13.0 0.1 to 167k 5, 10 9.0 technical specifications parameter unit cw resistor characteristics temperature coefficien t ppm/c 30 for 10 ? and above, 50 for 1.0 ? to 9.9 ? , 90 for 0.5 ? to 0.99 ? dielectric withstanding voltage v ac 1000 short time overload - 5 x rated power for 5 s for 3.75 w size and smaller, 10 x rated power for 5 s for 4 w size and greater terminal strength lb 10 minimum maximum working voltage v ( p x r ) 1/2 operating temperature range c cha racteristic u = - 65 to + 250, ch aracteristic v = - 65 to + 350 power rating - characteristic u = + 250 c max. ho t spot temperature, 0.5 % max. ? r in 2000 h load life characteristic v = + 350 c max. ho t spot temperature, 3.0 % max. ? r in 2000 h load life global part number information global part numbering example: cw02c10k00jb1214 global model value tolerance packaging special (see standard electrical specifications global model column for options) r = decimal k = thousand 1r500 = 1.5 ? 1k500 = 1.5 k ? h = 3.0 % j = 5.0 % k = 10.0 % e70 = lead (pb)-free, tape/reel, 1k pcs (smaller than cw005) e73 = lead (pb)-free, tape/reel, 500 pcs e12 = lead (pb)-free, bulk d18 = lead (pb)-free, r1r80 tape/reel cw02b...13 pack code for europe use only s70 = tin/lead, tape/reel, 1k pcs (smaller than cw005) s73 = tin/lead, tape/reel, 500 pcs b12 = tin/lead, bulk (dash number) (up to 3 digits) from 1 to 999 as applicable historical part numbering example: cw-2c-14 10 k ? 5 % b12 cw-2c-14 10 k ? 5 % b12 historical model resistance value tolerance code packaging 2c10 00j k w0 b12 c 4 1
cw www.vishay.com vishay dale revision: 01-feb-12 2 document number: 30215 for technical questions, contact: ww2aresistors@vishay.com this document is subject to change without notice. the products described herein and this document are subject to specific disclaimers, set forth at www.vishay.com/doc?91000 dimensions in inches (millimeters) notes (1) on some standard reel pack methods, the leads may be trimmed to a shor ter length than shown (2) b (maximum) dimension is clean lead to clean lead material specifications element: copper-nickel alloy or nickel-chrome alloy, depending on resistance value core: ceramic: stea tite or alumina, de pending on physical size coating: special high tempe rature silicone standard terminals: tinned copperweld ? (cw02b13 is tinned copper) end caps: stainless steel part marking: dale, model, wattage (3) , value, tolerance, date code note (3) wattage marked on resistor will be v characteristic, cw1/2 will not be marked with wattage derating note (4) all ? r figures shown are maximum, based upon testing requirements per mil-prf-26 at a maximum operating temp erature of + 350 c. ? r maximum figures are cons iderably lower when tested at a maxi mum operating temperature of + 250 c. model dimensions in inches [millimeters] ab [maximum] (2) cd cw1/2 0.250 0.031 [6.35 0.787] 0.281 [7.14] 0.085 0.020 [2.16 0.508] 0.020 0.002 [0.508 0.051] cw001 0.406 0.031 [10.31 0.787] 0.437 [11.10] 0.094 0.031 [2.39 0.787] 0.020 0.002 [0.508 0.051] cw01m 0.285 0.025 [7.24 0.635] 0.311 [7.90] 0.110 0.015 [2.79 0.381] 0.020 0.002 [0.508 0.051] cw002 0.625 0.062 [15.87 1.57] 0.765 [19.43] 0.250 0.032 [6.35 0.813] 0.040 0.002 [1.02 0.051] cw02m 0.500 0.062 [12.70 1.57] 0.562 [14.27] 0.185 0.015 [4.70 0.381] 0.032 0.002 [0.813 0.051] cw02b 0.562 0.062 [14.27 1.57] 0.622 [15.80] 0.188 0.032 [4.78 0.813] 0.032 0.002 [0.813 0.051] cw02b...13 0.500 0.062 [12.70 1.57] 0.563 [14.30] 0.188 0.032 [4.78 0.813] 0.032 0.002 [0.813 0.051] cw02c 0.500 0.062 [12.70 1.57] 0.593 [15.06] 0.218 0.032 [5.54 0.813] 0.040 0.002 [1.02 0.051] cw02c...14 0.500 0.062 [12.70 1.57] 0.593 [15.06] 0.218 0.032 [5.54 0.813] 0.032 0.002 [0.813 0.051] cw005 0.875 0.062 [22.22 1.57] 1.0 [25.40] 0.312 0.032 [7.92 0.813] 0.040 0.002 [1.02 0.051] cw005...2 0.875 0.062 [22.22 1.57] 1.0 [25.40] 0.250 0.032 [6.35 0.813] 0.032 0.002 [0.813 0.051] cw005...3 0.875 0.062 [22.22 1.57] 1.0 [25.40] 0.312 0.032 [7.92 0.813] 0.032 0.002 [0.813 0.051] cw007 1.218 0.062 [30.94 1.57] 1.281 [32.54] 0.312 0.032 [7.92 0.813] 0.040 0.002 [1.02 0.051] cw010 1.781 0.062 [45.24 1.57] 1.875 [47.62] 0.375 0.032 [9.52 0.813] 0.040 0.002 [1.02 0.051] cw010...3 1.781 0.062 [45.24 1.57] 1.875 [47.62] 0.375 0.032 [9.52 0.813] 0.032 0.002 [0.813 0.051] d c 1.50 [38.10] (1) min. a b rated power in % ambient temperature in c 25 0 20 40 60 80 100 120 - 65 150 350 50 250 0 - 50 char. u char. v performance test conditions of test test limits (4) (characteristic v) thermal shock rated power applied until thermally stable, then a minimum of 15 min at - 55 c (2.0 % + 0.05 ? ) ? r short time overload 5 x rated power (3. 75 w and smaller), 10 x rated power (4 w and larger) for 5 s (2.0 % + 0.05 ? ) ? r dielectric withstanding voltage 1000 v rms , 1 min (0.1 % + 0.05 ? ) ? r low temperature storage - 65 c for 24 h (2.0 % + 0.05 ? ) ? r high temperature exposure 250 h at + 350 c (4.0 % + 0.05 ? ) ? r moisture resistance mil-std-202 method 106, 7b not applicable (2.0 % + 0.05 ? ) ? r shock, specified pulse m il-std-202 method 213, 100 gs for 6 ms, 10 shocks (0.2 % + 0.05 ? ) ? r vibration, high frequency fre quency varied 10 hz to 2000 hz, 20 g peak, 2 directions 6 h each (0.2 % + 0.05 ? ) ? r load life 2000 h at rated power, + 25 c, 1.5 h on, 0.5 h off (3.0 % + 0.05 ? ) ? r terminal strength 5 s to 10 s 10 pound pu ll test; torsion test - 3 alternating directions, 360 each (1.0 % + 0.05 ? ) ? r
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