schottky rectifier 6.6 amp 6cwq03f 6CWQ04F pd-2.313 rev. a 12/97 1 www.irf.com case style and dimensions dimensions in millimeters and inches d - pak outline (similar to to-252aa) major ratings and characteristics i f(av) rectangular 6.6 a waveform v rrm 30/40 v i fsm @ tp = 5 s sine 470 a v f @ 3 apk, t j = 25c 0.55 v (per leg) t j - 40 to 125 c characteristics 6cwq..f units the 6cwq..f surface mount, center tap, schottky rectifier has been designed for applications requiring low forward drop and small foot prints on pc boards. typical applications are in disk drives, switching power supplies, converters, free- wheeling diodes, battery charging, and reverse battery protection. popular d-pak outline center tap configuration small foot print, surface mountable low forward voltage drop high frequency operation guard ring for enhanced ruggedness and long term reliability description/features
6cwq03f, 6CWQ04F pd-2.313 rev. a 12/97 2 www.irf.com i f(av) max. average forward current 6.6 a 50% duty cycle @ t c = 97 c, rectangular wave form * see fig. 5 i fsm max. peak one cycle non-repetitive 470 5s sine or 3s rect. pulse surge current (per leg) * see fig. 7 42 10ms sine or 6ms rect. pulse absolute maximum ratings parameters 6cwq..f units conditions a part number 6cwq03f 6CWQ04F v r max. dc reverse voltage (v) v rwm max. working peak reverse voltage (v) 30 40 voltage ratings following any rated load condition and with rated v rrm applied (1) pulse width < 300s, duty cycle <2% v fm max. forward voltage drop 0.55 v @ 3a (per leg) * see fig. 1 (1) 0.71 v @ 6a 0.50 v @ 3a 0.63 v @ 6a i rm max. reverse leakage current 3 ma t j = 25 c (per leg) * see fig. 2 (1) 20 ma t j = 125 c c t typical junction capacitance (per leg) 180 pf v r = 5v dc , (test signal range 100khz to 1mhz) 25c l s typical series inductance (per leg) 5.0 nh measured lead to lead 5mm from package body dv/dt max. voltage rate of change 10,000 v/ s (rated v r ) t j = 25 c t j = 125 c v r = rated v r parameters 6cwq..f units conditions electrical specifications 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 5.0 c/w dc operation * see fig. 4 to case r thja max. thermal resistance junction 80 c/w dc operation to ambient pc board mounted print land = 20x20mm wt approximate weight 0.3 (0.01) g (oz.) case style d - pak similar to to-252aa thermal-mechanical specifications parameters 6cwq..f units conditions
6cwq03f, 6CWQ04F pd-2.313 rev. a 12/97 3 www.irf.com fig. 2 - typical values of reverse current vs. reverse voltage (per leg) fig. 3 - typical junction capacitance vs. reverse voltage (per leg) fig. 4 - max. thermal impedance z thjc characteristics (per leg) fig. 1 - max. forward voltage drop characteristics (per leg) 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 junct ion capacit ance - c (pf) .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 , rectangular pulse d uration (seconds) therm al impedance - z ( c/w ) single pulse (therm al resi st ance) 2 t 1 t p d m n otes: 1. d uty factor d = t / t 2. peak t = p x z + t 1 jdmthjcc 2 .1 1 10 100 .1 .2 .3 .4 .5 .6 .7 .8 .9 1 1.1 1.2 1. 3 fm f i nst ant aneous forwar d c urrent - i (a) forward voltage drop - v (v) t = 125 c t = 25c j j .0001 .001 .01 .1 1 10 100 0 5 10 15 20 25 30 35 4 0 r r 100 c 75c 50c 25c r everse voltage - v (v) r everse c urrent - i (m a) t = 125c j
6cwq03f, 6CWQ04F pd-2.313 rev. a 12/97 4 www.irf.com 110 115 120 125 130 01234 5 dc allow able case tem perature - ( c ) average forward current - i (a) f(av) r (dc) = 5.0 c/ w thjc 0 .5 1 1. 5 2 2. 5 3 0 .5 11.522.533.544.5 5 dc average p ower loss - (w atts) f( av) d = 0.08 d = 0.17 d = 0.25 d = 0.33 d = 0.50 rm s li m it average forward current - i (a) fig. 5 - max. allowable case temperature vs. average forward current (per leg) fig. 6 - forward power loss characteristics (per leg) fig. 7 - max. non-repetitive surge current (per leg) 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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