www.vishay.com 43 rop vishay sfernice document number: 52013 revision 30-aug-02 for technical questions, contact sfer@vishay.com features 2w and 4w at 25c nf c 83-210 good overload performance high reliability level small size high electrical insulation resistance to cleaning solvents excellent climatic performances good mechanical strength the ? rop ? resistors combine low price with outstanding performance and are therefore suitable for both professional and general purpose applications. these power metal oxide lm resistors can favorably be used as a substitute for general purpose cemented or lacquered wirewound resistors, in medium and high ohmic values ranges. power metal oxide film resistors 25 min. 25 min. a max. b max. c a max. + 8 mm 4 4 45 chamfer max. 0.25 mm deep 1.2 0.02 dimensions in millimeters dimen- sions a 14.7 4.9 6.9 25.2 rop2 rop4 0.8 0.1 0.8 0.1 1.2 3 ? b ? c unit weight in g series vishay sfernice series cctu 04-06a nf c/ute 83-210 5% e24 critical resistance power rating 25 c resistance value range and resistance tolerance maximum voltage maximum operating temperature rcp12 2w out of nominal ohmic range 1 ? to 56k ? 350v 235 c 4w out of nominal ohmic range 4.7 ? to 100k ? 500v + 235 c rop2 rcp13 rop4 technical specifications
document number: 52013 revision 30-aug-02 www.vishay.com 44 rop vishay sfernice for technical questions, contact sfer@vishay.com ambient temperature in degrees celsius % rated power power rating chart (nf c) temperature rise 100 50 21 0 0 25 40 70 100 120 140 160 180 200 235 power metal oxide film resistors tests nf c 83-210 - cecc 40 201 climatic sequence thermal shock short time overload load life damp heat humidity (steady state) load life at max. category temperature climatic sequence 10 pn during 5 s or 40 v/mn 10 cycles (3% + 0.1 ) (3% + 0.1 ) (3% + 0.1 ) 3% or 0.05 (1% + 0.05 ) (3% + 0.1 ) 0.2% or 0.05 ? 0.2% or 0.05 ? 0.3% or 0.05 ? 1% or 0.05 ? 0.3% or 0.05 ? 3% or 0.05 ? load at pr followed by cold temp. exposure 15 min. at 55 c cycle 90 /30 1000 h at pr at 25 c 56 days with low load 200 c 21% of pn 55 c + 200 c severity 1-5 cycles conditions nf c 83-210 requirements typical values and drifts performance rated power in watt hot spot temperature in c 250 200 150 100 50 0 0 1 2 3 4 rop 2 rop 4 2 special design style series rop tolerance 5% ohmic value 18k ? ordering information method n optional packaging optional
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