leaded res istors di m e n sio n s unit: mm st yl e di m e n sio n normal miniature l ? d h ?d cfr-12 cfr25s 3.40.3 1.90.2 282.0 0.450.05 cfr-25 cfr50s 6.30.5 2.40.2 282.0 0.550.05 cfr-50 cfr1ws 9.00.5 3.30.3 262.0 0.550.05 cfr100 cfr2ws 11.51.0 4.50.5 352.0 0.80.05 cfr200 cfr3ws 15.51.0 5.00.5 332.0 0.80.05 f eat ur es power rating 1/6w, 1/4w, 1/2w, 1w, 2w, 3w resistance tolerance 2%, 5% t.c.r. see table 1 de r ati ng curv e for resistors operated in ambient temperatures above 70c, power rating must be derated in accordance with the curve below. ta bl e 1 te mp e r at ur e c oe ff i c ie n t st yl e max. va lu e o f t e mp . coe ff i c ie n t ppm /c under 100k 100k - 1m 1m - 10m cfr100, cfr200, cfr2ws, cfr3ws 350 -500 -1,500 cfr-12, cfr-25, cfr-50, cfr25s, cfr50s, cfr1ws +350 / -500 -700 -1,500 ?d h l ?d i n t r od uc tio n the cfr series carbon film resistors are manufactured by coating a homogeneous film of pure carbon on high grade ceramic rods. after a helical groove has been cut in the resistive layer, tinned connecting leads of electrolytic copper are welded to the end-caps. the resistors are coated with layers of tan color lacquer. general type normal & miniature style [ cfr series ] carbon film resistors rated load (%) ambient temperature (c) 160 140 120 100 80 60 40 100 80 60 40 20 20 70 155 c
note: 31 note: rated continuous working voltage (rcwv) = power rating x resistance value e l e c t r i c a l ch a r a c te r isti c s st yl e cfr-12 cfr25 s cfr-25 cfr50 s cfr-50 cfr1w s cfr100 cfr2w s cfr200 cfr3w s power rating at 70c 1/6w 1/4w 1/2w 1w 2w 3w maximum working voltage 150v 200v 250v 300v 350v 400v 500v maximum overload voltage 300v 400v 500v 600v 700v 800v 1,000v voltage proof 300v 400v 500v 700v 1,000v resistance range 1 - 10m & 0 for e24 series value operating temp. range -55c to +155c temperature coeffcient see table 1 note: special value is available on request e nv i r o nm e n ta l ch a r a c te r isti c s p e rf o rm a nc e test test m et h od a ppr aise short time overload iec 60115-1 4.13 2.5 times rcwv for 5 sec. 0.75%+0.05 voltage proof iec 60115-1 4.7 in v-block for 60 sec., test voltage by type by type temperature coeffcient iec 60115-1 4.8 -55c to +155c by type insulation resistance iec 60115-1 4.6 in v-block for 60 sec. >1,000m solderability iec 60115-1 4.17 2355c for 30.5 sec. 95% min. coverage solvent resistance of marking iec 60115-1 4.30 ipa for 50.5 min. with ultrasonic no deterioration of coatings and markings robustness of terminations iec 60115-1 4.16 direct load for 10 sec. in the direction of the terminal leads 2.5kg (24.5n) periodic-pulse overload iec 60115-1 4.39 4 times rcwv 10,000 cycles (1 sec. on, 25 sec. off) 1.0%+0.05 damp heat steady state iec 60115-1 4.24 402c, 90-95% rh for 56 days, loaded with 0.1 times rcwv 3.0%+0.05 endurance at 70c iec 60115-1 4.25 702c at rcwv for 1,000 hr. (1.5 hr. on, 0.5 hr. off) 3.0%+0.05 temperature cycling iec 60115-1 4.19 -55c ? room temp. ? +155c ? room temp. (5 cycles) 1.0%+0.05 resistance to soldering heat iec 60115-1 4.18 2603c for 101 sec., immersed to a point 30.5mm from the body 1.0%+0.05
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