sh www.vishay.com vishay sfernice revision: 27-may-13 1 document number: 50014 for technical questions, contact: sfer@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 heatsink encased wirewound power resistors industrial applications features ? ? 50 w at + 25 c ? high power characteristics ? utilize heatsink capability ? good mechanical protection ? industrialized product ? material categorization: for definitions of compliance please see www.vishay.com/doc?99912 built for high power dissipation applications, these components ha ve very good overall characteri stics for industrial use under harsh environmental conditions. rohs compliant dimensions in millimeters series a b 0.2 d 0.2 e 0.5 f g 1 h 0.7 j 0.5 ? k 0.1 l max. m 0.5 n 0.3 ? p min. q weight g sh5 28.5 1.5 12.5 11.3 16.3 6.8 1.5 8.5 6.2 16.4 2.4 8.9 4.3 1.6 2.1 25.3 1.5 3 sh10 35.5 1.5 15.9 14 19 7.9 1.5 11 7.9 20.6 2.4 11 5.6 2 2.1 30.6 1.5 8.8 sh25 49 1.3 19.8 18.3 28 11.1 1.5 14 9.9 27.5 3.2 15 8 2.4 2.1 44.6 1.3 16.5 sh50 70.2 1.4 21.4 39.7 50 11 1.2 15.5 10.7 29.4 3.2 15 8 2.4 2.1 66.5 1.4 30.8 standard electrical specifications model resistance range ? rated power p 25 c w limiting element voltage v tolerance % sh5 0.1 to 3.3k 10 160 5 sh10 0.1 to 15k 12.5 250 5 sh25 0.1 to 33k 25 550 5 sh50 0.1 to 51k 50 1285 5 technical specifications vishay sfernice series sh5 sh10 sh25 sh50 power rating ? chassis mounted resistors: ? 413 cm 2 for sh5 and sh10, 536 cm 2 for sh25 and sh50 at 25 c 10 w 12.5 w 25 w 50 w at 70 c 8 w 10 w 20 w 40 w unmounted resistors at 25 c 4 w 6 w 9 w 12 w at 70 c 3.2 w 4.8 w 7.2 w 9.6 w dielectric strength v rms 800 v 1000 v 2000 v 2000 v insulation resistance > 10 4 m ? > 3 x 10 4 m ? temperature coefficient 50 ppm/c r n > 50 ? climatic category 55/200/56 temperature limits - 55 c + 200 c a n m f ? 2 ? k ? p e q l g h b j d
sh www.vishay.com vishay sfernice revision: 27-may-13 2 document number: 50014 for technical questions, contact: sfer@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 power rating temperature rise marking vishay sfernice trademark, model, style, nominal resistance (in ? ), tolerance (in %), manufacturing date. performance tests conditions typical drifts momentary overload 5 p n /5 s 0.5 % max. + 0.05 ? climatic sequence - 55 c + 200 c 5 cycles 1 % max. + 0.05 ? load life nominal power p n 1000 h at 25 c 1 % max. + 0.05 ? ambient temperature in c 100 125 75 50 25 0 0 50 100 150 200 250 275 300 350 rated power in % rated power in w (mounted on heatsink chassis) 200 250 150 100 50 0 0 10 20 30 40 50 60 70 h10 s h5 s h25 s h50 s hot spot temperature in c packaging bag of 10 units ordering information sh 25 10 k ? 5 % ba10 e1 model style ohmic value tolerance packaging lead (pb)-free sap part numbering guidelines sh 25 10001 j s03 model style ohmic value tolerance packaging
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