features smaller than a d 2 pak package 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 pwr163 series power resistor *rohs directive 2002/95/ec jan. 27, 2003 including annex and rohs recast 2011/65/eu june 8, 2011. speci cations are subject to change without notice. customers should verify actual device performance in their speci c applications. general information the pwr163 series is a dpak style surface mount power resistor. it has a very low inductance making it ideal for high frequency applications such as ampli? ers for audio or wireless base stations. it has excellent pulse characteristics as well, allowing i t to be used in current limiting or capacitor discharge circuits. parameter value(s) resistance (see popular resistance values table) 0.02 to 130 k power rating @ 25 ?c case temperature 25 w tolerance 1 %**, 5 % tcr 0.02 speci cations are subject to change without notice. customers should verify actual device performance in their speci c applications. pwr163 series power resistor soldering pro le pwr 163 s - 25 - 10r0 j e model pwr = power resistor package 163 = dpak style pin style s = surface mount power 25 = 25 w resistance value <100 ohms ... ??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 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 ? 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. 25 75 125 175 225 275 0 50 100 150 200 250 300 time (seconds) temperature (?) 60 - 120 seconds 60 - 90 seconds 260 ? peak 190 ? 150 ? 220 ? ramp down 6 ?/second 245 ? maximum of 20 seconds between +245 ? and +260 ? ramp up 3 ?/second maximum 10 seconds minimum <1> <1> typical part marking 163 25 xxxx x% yyy costa rica model number tolerance date code country of origin resistance code manufacturer's trademark
rev. 11/12 product dimensions recommended pad layout speci cations are subject to change without notice. customers should verify actual device performance in their speci c applications. pwr163 series power resistor packaging speci cations dimensions: mm (inches) tolerance: ?.38 unless otherwise noted (?.015) 8.13 (0.320) 7.24 (0.285) 8.22 (0.324) 5.08 (0.200) 0.89 (0.035) 0.81 (0.032) 2.79 (0.110) 12.29 (0.484) ref. 1.76 (0.069) 4.03 (0.159) 1.51 (0.059) 0.51 (0.020) 6.35 (.250) 7.11 (.280) 7.87 (0.310) 8.51 (.335) 3.81 (.150) 1.78 (.070) 5.08 (.200) 1.62 (.065) 1.62 (.065) 0.5 0.18 (0.020 0.007) 0.38 0.20 (0.015 0.008) 24.0 (0.945) 5.3 (0.209) 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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