leaded resis tors wire wound resistors int r o d uction the resistor element is a resistive wire which is wound in a single layer on a ceramic rod or fiber - glass, tinned connecting wires of electrolytic copper are welded to the end-caps. the ends of the resis - tance wire and the leads are connected to the caps by welding. the resistors are coated with layers of green color flame proof lacquer. d im e n s ion s sty le dimension normal miniature l ?d h ?d knp-25 knp50s 6.30.5 2.40.2 282.0 0.550.05 knp-50 knp1ws 9.00.5 3.30.3 262.0 0.550.05 knp100 knp2ws 11.51.0 4.50.5 352.0 0.80.05 knp200 knp3ws 15.51.0 5.00.5 332.0 0.80.05 knp300 knp400 knp500 knp7ws 24.51.0 8.00.5 382.0 0.80.05 knp700 - 24.51.0 8.00.5 382.0 0.80.05 * knp1ws ( for mb type ) ? d = 0.80.05 mm unit : mm ?d h l ?d dera ting cu r v e for resistors operated in ambient temperatures above 20c , power rating must be derated in accordance with the curve below. f ea tu res power rating 1/4w, 1/2w, 1w, 2w, 3w, 4w, 5w, 7w resistance tolerance 1%, 5% t.c.r. 300ppm/oc flameproof multi-layer coating meets ul-94v-0 flameproof feature meets overload test ul-1412 f lame-proof t ype normal & miniature style [ knp series ] knp5ws 17.51.0 6.50.5 322.0 0.80.05 ambient temperature (c) rated load (%) 100 80 60 40 20 -0 0 0 100 10 200 20 300 40 70 1 27 1/4w 2w 3w 7w
47 e nvi r onm e nt al ch ara ct er i s tic s performance test test metho d appraise short time overload is-c-5202 5.5 2.5 times rcwv for 5 seconds (2%0.05 R g g g ele ct r ic al ch ara ct er i s tic s normal style style knp-25 knp-50 knp100 knp200 knp300 knp400 knp500 knp700 poer rating at 70 c 1/4w 1/2w 1 w 2 w 3w 4w 5 w 7w dielectric withstanding voltage 250v 300v 400v resistance range 0.1 mini ature style style knp50s knp1ws knp2ws knp3ws knp5ws knp7ws poer rating at 70 c 1/2w 1 w 2 w 3 w 5 w 7 w dielectric withstanding voltage 200v 300v 400v resistance range 0.1
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