3w to 50w planar shock / vibration proof high power resistors features ?????????????????????? . ? non-inductive planar package ? high power density. ? thin package for high density pcb installation. ? power dissipated above the board. ? rohs compliant. ? superior vibration durability applications ?????????????????? ??? ? ideal for extreme mechanically stressed environments. ? power supply pre-load resistors. ? ups systems ? snubber and pulse handling circuits. ? pulse generator load resistors . ? in-rush current protection ? bleeder resistors specification notes: 1. contact factory for custom products , non-standard values and tolerances. specifications subject to change without notice items specification conditions power rating 3w, 5w, 7w, 10w, 20w, 30w, 40w & 50w, @ ambient temp < 70 c operating voltage max 300vac, 500vdc resistance range 0.1 ? to 200 k ? extended resistance range available. tcr 100 ppm/ c for -55 to +155 c and above 1 ? tolerance +/-5%, optional 1%, 2% operation temp. range -55 - +155 c dielectric withstanding voltage 5kv minimum mechanical shock ? r +/- 0.25 % 100g. load life ? r +/- 2.0 % 70 c, 90 min. on, 30 min.off, 1000 hours. humidity ? r +/- 0.5 % 85 c, 85% rh, dc 0.1w, 1000 hours. temperature cycle ? r +/- 0.5% -55 c, 30 min.,+155 c 30min., 5cycles. soldering heat (max) ? r +/- 0.25 % 250+/-5 c, 10 seconds, solderability min 95% coverage 230+/-5 c, 5 seconds. insulation resistance over 1000 m ? between terminals and metal back plate. vibration ? r +/- 0.25 % 20g, 10hz to 2 khz. 1 materials lead: tin plated phosphor bronze substrate: 96% alumina resistor: ruthenium oxide model bpr 3 bpr 5 bpr 7 bpr 10 bpr 20 bpr 30 bpr 40 bpr 50 0.50 0.50 1.00 1.00 2.00 2.10 2.10 2.10 dim a 12.70 12.70 25.40 25.40 50.80 53.34 53.34 53.34 0.60 1.00 0.75 1.00 1.00 1.40 1.90 2.20 dim b 15.24 25.40 19.05 25.40 25.40 35.56 48.26 55.88 0.67 1.07 0.82 1.07 1.07 1.47 1.97 2.27 dim c 17.02 27.18 20.82 27.18 27.18 37.34 50.04 57.66 0.30 0.30 0.80 0.80 1.80 1.90 1.90 1.90 dim d 7.62 7.62 20.32 20.32 45.72 48.26 48.26 48.26 dimensions (inch / mm) dim. a .005 0.13 dim. b .005 0.13 dim. d .015 0.38 dim. c 0.51 .020 .005 0.51 0.13 .040 0.13 .040 .005 1.02 0.13 .200 .002 5.08 0.05 .200 bpr
ordering information bpr 10 500 f model power rating code toler ance 3 : 3w, j = 5% tol 5 : 5w g = 2% tol 7 : 7w f = 1% tol 10 : 10w 20 : 20w 30 : 30w 40 : 40w 50 : 50w resistance code 50 ? : 500 first two digits significant, last digit: number of trailing zeros derating curve % power rating 100 80 60 40 20 70 c +155 c 0 bpr 3w to 50w planar high power resistors 2 res i stor temperature ( c )
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