schottky rectifier 5.5 amp 50wq03f 50WQ04F pd-2.310 rev. a 12/97 1 www.irf.com dimensions in millimeters and inches d - pak outline (similar to to-252aa) case style and dimensions major ratings and characteristics i f(av) rectangular 5.5 a waveform v rrm 30/40 v i fsm @ 60hz 470 a v f @ 5 apk, t j = 25c 0.65 v t j - 40 to 125 c characteristics 50wq..f units description/features the 50wq..f surface mount schottky rectifier has been de- signed for applications requiring low forward drop and small foot prints on pc board. typical applications are in disk drives, switching power supplies, converters, free-wheeling diodes, battery charging, and reverse battery protection. popular d-pak outline small foot print, surface moutable low forward voltage drop high frequency operation guard ring for enhanced ruggedness and long term reliability
50wq03f, 50WQ04F pd-2.310 rev. a 12/97 2 www.irf.com part number 50wq03f 50WQ04F v r max. dc reverse voltage (v) v rwm max. working peak reverse voltage (v) 30 40 voltage ratings i f(av) max. average forward current 5.5 a 50% duty cycle @ t c = 92 c, rectangular wave form * see fig. 5 i fsm max. peak one cycle non-repetitive 470 5s sine or 3s rect. pulse surge current * see fig. 7 42 10ms sine or 6ms rect. pulse parameters 50wq..f units conditions absolute maximum ratings a following any rated load condition and with rated v rrm applied v fm max. forward voltage drop 0.65 v @ 5a * see fig. 1 (1) 0.90 v @ 10a 0.60 v @ 5a 0.78 v @ 10a i rm max. reverse leakage current 3 ma t j = 25 c * see fig. 2 (1) 20 ma t j = 125 c c t typical junction capacitance 180 pf v r = 5v dc , (test signal range 100khz to 1mhz) 25 c l s typical series inductance 5.0 nh measured lead to lead 5mm from package body t j = 25 c t j = 125 c v r = rated v r electrical specifications parameters 50wq..f units conditions (1) pulse width < 300s, duty cycle < 2% t j max. junction temperature range -40 to 125 c t stg max. storage temperature range -40 to 125 c r thjc max. thermal resistance junction 6.0 c/w dc operation * see fig. 4 to case wt approximate weight 0.3 (0.01) g (oz.) case style d - pak similar to to-252aa thermal-mechanical specifications parameters 50wq..f units conditions
50wq03f, 50WQ04F pd-2.310 rev. a 12/97 3 www.irf.com fig. 2 - typical values of reverse current vs. reverse voltage fig. 3 - typical junction capacitance vs. reverse voltage fig. 4 - maximum thermal impedance z thjc characteristics fig. 1 - maximum forward voltage drop characteristics 10 100 1000 0 5 10 15 20 25 30 35 40 4 5 t = 25 c j reverse vol t age - v ( v) r t junction c apacitance - c (pf) .1 1 10 100 .2 .4 .6 .8 1 1.2 1.4 1. 6 fm f instantaneous forward current - i (a) forw ard voltage drop - v (v) t = 125 c t = 25c j j .01 .1 1 10 .00001 .0001 .001 .01 .1 1 10 10 0 d = 0.33 d = 0.50 d = 0. 25 d = 0. 17 d = 0.08 1 thjc t , rect angul ar pul se dur at i on (seconds) ther m al im pedance - z ( c/ w ) single pulse (therm al resistance) 2 t 1 t p d m not es: 1. d uty factor d = t / t 2. peak t = p x z + t 1 jdmthjcc 2 .0001 .001 .01 .1 1 10 100 0 5 10 15 20 25 30 35 4 0 r r 125 c 100c 75c 50c 25c reverse voltage - v (v) reverse current - i (ma ) t = 150c j
50wq03f, 50WQ04F pd-2.310 rev. a 12/97 4 www.irf.com 90 95 100 105 110 115 120 125 130 0246 8 dc al l ow able case tem perature - ( c) average forward current - i (a) f( av) r (d c) = 6. 0 c /w thjc 0 1 2 3 4 5 6 0246 8 d c average power loss - (w at ts) f(av) d = 0. 08 d = 0. 17 d = 0. 25 d = 0. 33 d = 0. 50 r ms li m it aver age forwar d curr ent - i (a) fig. 5 - maximum allowable case temperature vs. average forward current fig. 6 - forward power loss characteristics fig. 7 - maximum non-repetitive surge current 10 100 1000 10 100 1000 10000 fsm p non-repetitive surge current - i (a) at any rated load condition and with rated v applied following surge rrm square wave pulse duration - t (microsec)
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