features d 2 pak housing low inductance resistor electrically isolated from the backplate high power rating compatible with lead free solder re? ow temperatures rohs compliant* applications power supplies motor drives test and measurement recti? ers electrical & thermal characteristics pwr263 series power resistor lead free versions are rohs compliant* *rohs directive 2002/95/ec jan 27 2003 including annex. speci? cations are subject to change without notice. customers should verify actual device performance in their speci? c applications general information bourns ? pwr263 series is a to263 dpak style power resistor. manufactured using thick ? lm on alumina ceramic technology, it is used in current measurement, snubber, bleeder and discharge circuits. parameter value(s) resistance (see table of standard values) 0.5 to 130 k power rating @ 25 ?c case temperature 20 w tolerance 1 %, 5 % tcr 0.5 speci? cations are subject to change without notice. customers should verify actual device performance in their speci? c applications pwr263 series power resistor dimensions: mm (inches) soldering pro le power dissipation is 2.8 w at an ambient temperature of 25 ?c when mounted on a double-sided copper board using fr4 standard, 70 m of copper, 39 x 30 x 1.6 mm. pulse power rating energy in joules overload duration in seconds 10 100 1 0.1 0.01 10 -7 10 -6 10 -5 10 -4 10 -3 10 -2 10 -1 the energy absorbed by the resistor expressed in joules can be calculated by multiplying the peak power of the pulse in watts times the length of the pulse in seconds. the energy should not exceed the limits shown in the graph. the overload voltage should not exceed 1.5 times the maximum operating voltage. product dimensions 7.8 (0.307) 10.1 (0.398) 8.0 (.315) 11.0 (.433) 5.08 (0.20) 1.3 (.051) 1.4 (0.055) 1.92 (0.076) 0.25 (0.010) 2.4 (0.095) 0.26 (0.10) 4.23 (0.166) 48 1.6 (0.063) 4.02 (0.158) 15.39 (0.606) 8.8 (0.347) 10.4 (0.409) ref. 10.52 (0.414) 3.1 (0.122) 4.5 (0.177) 2.25 (0.089) tolerance: 0.38 unless otherwise noted (0.015) lead 0.102 max at mounting coplanarity: (0.004) surface recommended pad layout 25 75 125 175 225 275 0 50 100 150 200 250 300 time (seconds) temperature (c) 60 - 120 seconds 60 - 90 seconds 260 c peak 190 c 150 c 220 c ramp down 6 c/second 245 c maximum of 20 seconds between +245 c and +260 c ramp up 3 c/second maximum 10 seconds minimum <1> <1>
rev. 06/11/09 pwr 263 s - 20 - 10r0 f e model pwr = power resistor package 263 = d 2 pak pin style s = surface mount power 20 = 20 w resistance value <100 ohms ... ?r? represents decimal point (examples: 7r50 = 7.5 ; r500 = 0.5 ) 100 ohms ... first three digits are signi? cant, fourth digit represents number of zeros to follow (exam- ples: 2000 = 200 ohms; 3002 = 30k ohms) absolute tolerance j = 5 % f = 1 % packaging e = tape & reel blank = tubes how to order speci? cations are subject to change without notice. customers should verify actual device performance in their speci? c applications pwr263 series power resistor packaging speci cations 0.5 0.18 (0.020 0.007) 0.38 0.20 (0.015 0.008) 24.0 (0.945) 5.3 (0.209) dimensions: mm (inches) tolerance: 0.38 unless otherwise noted (0.015) asia-paci c: tel: +886-2 2562-4117 fax: +886-2 2562-4116 europe: tel: +41-41 768 5555 fax: +41-41 768 5510 the americas: tel: +1-951 781-5500 fax: +1-951 781-5700 www.bourns.com
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