www.vishay.com 34 CPF vishay dale document number 31021 revision 24-jul-02 for technical questions, contact ff2bresistors@vishay.com metal film resistors, industrial, power, flameproof features ? high power rating, small size ? flameproof, high temperature coating ? special filming and coating processes ? excellent high frequency characteristics ? low noise ? low voltage coefficient standard electrical specifications model power limiting resistance range ? tolerance temperature rating element vs best available tolerance / tc coefficient p 70 c voltage max. 2% 1% 0.5% 0.1% w v t - 00 t - 0 t - 1 t-2 / t-9 % ppm/ c CPF - 1 1 250 r1 - 150k r5 - 150k 1r - 150k 5r - 150k 0.1, 0.25, 0.5, 1, 5 200, 150, 100, 50, 25 CPF - 2 2 350 r1 - 150k r5 - 150k 1r - 150k 5r - 150k 0.1, 0.25, 0.5, 1, 5 200, 150, 100, 50, 25 CPF - 3 3 500 r1 - 150k 1r - 150k 1r - 150k 8r - 150k 0.1, 0.25, 0.5, 1, 5 200, 150, 100, 50, 25 CPF - 1 5620 f t - 1 model resistance value ? tolerance temperature coefficient CPF 1 b = 0.1% t - 00 = 200ppm?/c CPF 2 c = 0.25% t - 0 = 150ppm?/c CPF 3 d = 0.5% t - 1 = 100ppm?/c f = 1% t - 2 = 50ppm?/c g = 2% t - 9 = 25ppm?/c j = 5% first three digits are significant (two for a 5% tolerance). last digit specifies number of zeros to follow examples: 2211 = 2210 ohms (1%) 1002 = 10000 ohms (1%) 103 = 10000ohms (5%) ordering information ? marking: print marked - dale, model, resistance value, tolerance / temperature coefficient, date code technical specifications parameter unit CPF - 1 CPF - 2 CPF - 3 rated dissipation at 70 cw1 2 3 limiting element voltage 1) v 250 350 500 insulation voltage v- 900 900 900 thermal resistance k/w 85 60 50 insulation resistance ? 10 10 category temperature range c- 65 c / + 230 c 1) rated voltage p x r
www.vishay.com 35 CPF vishay dale document number 31021 revision 24-jul-02 for technical questions, contact ff2bresistors@vishay.com dimensions material specifications l 1 max. l d 1.50 0.125 [38.10 3.18] d dimensions in inches [millimeters] model l d l 1 (max.) d CPF - 1 0.240 0.020 0.090 0.008 0.310 0.025 0.002 [6.10 0.51] [2.29 0.20] [7.87] [0.64 0.05] CPF - 2 0.344 0.031 0.145 0.015 0.425 0.032 0.002 [8.74 0.79] [3.68 0.38] [10.80] [0.81 0.05] CPF - 3 0.555 0.041 0.180 0.015 0.650 0.032 0.002 [14.10 1.04] [4.57 .381] [16.51] [0.81 0.05] surface temperatures were taken with an infrared pyrometer in + 25 c still air. resistors were supported by their leads in test clips at a point .500" [12.70mm] out from the resistor body ends. metal film resistors, industrial, power, flameproof derating % rated power surface temperature [?c] above ambient [?c] 250 200 150 100 50 0 surface temperature vs power 01 2345 applied power [watts] element: proprietary nickel - chrome alloy. core: cleaned high purity ceramic coating: special high temperature conformal coat. termination: standard lead material is solder - coated solderable and weldable per mil -std-1276, type c 120 100 80 60 40 20 0 - 55 - 25 0 30 60 90 120 150 180 210 240 ambient temp. in ?c 70 CPF-1 CPF-2 terminal strength: 2 pound pull test. solderability: continuous satisfactory coverage when tested in accordance with mil -std - 202, method 208 mechanical specifications test max. ? r (typical test lots) thermal shock 1.0% short time overload 0.5% low temperature operation 0.5% moisture resistance 1.5% resistance to soldering heat 0.5% shock 0.5% vibration 0.5% terminal strength 0.5% dielectric withstanding voltage 0.5% life 2.0% performance * 1.08 0.125 [27.43 3.18] if tape and reel CPF-3
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