schottky rectifier 35 amp, 45v 35SGQ045 major ratings and characteristics description/features 10/04/00 case style ir case style to-254aa www.irf.com 1 characteristics 35SGQ045 units i f(av) 35 a v rrm 45 v i fsm @ tp = 8.3ms half-sine 300 a v f @ 35apk, t j =125c 0.74 v t j ,t stg operating and storage -55 to 150 c high efficiency series the 35SGQ045 schottky rectifier has been expressly designed to meet the rigorous requirements of hi-rel environments. it is packaged in the hermetic isolated to-254aa package. the device's forward voltage drop and reverse leakage current are optimized for the lowest power loss and the highest circuit efficiency for typical high frequency switching power supplies and resonent power converters. full mil-prf-19500 quality conformance testing is available on source control drawings to tx, txv and s quality levels. ? hermetically sealed ? low forward voltage drop ? high frequency operation ? guard ring for enhanced ruggedness and long term reliability ? lightweight cathode open anode 3.78 ( .149 ) 3.53 ( .139 ) -a- 13.84 ( .545 ) 13.59 ( .535 ) 6.60 ( .260 ) 6.32 ( .249 ) 20.32 ( .800 ) 20.07 ( .790 ) 13.84 ( .545 ) 13.59 ( .535 ) -c- 1.14 ( .045 ) 0.89 ( .035 ) 3.81 ( .150 ) 1.27 ( .050 ) 1.02 ( .040 ) -b- .12 ( .005 ) 3x 2x 3.81 ( .150 ) 1 2 3 17.40 ( .685 ) 16.89 ( .665 ) 31.40 ( 1.235 ) 30.39 ( 1.199 ) .5 0 ( .0 20 ) m c a m b .2 5 ( .0 10 ) m c legend 1 - co l l 2 - e m it 3 - gat e pd -93963
35SGQ045 2 www.irf.com part number 35SGQ045 v r max. dc reverse voltage (v) v rwm max. working peak reverse voltage (v) voltage ratings 45 parameters limits units conditions i f(av) max. average forward current 35 a 50% duty cycle @ t c = 99c, square waveform see fig. 5 i fsm max. peak one cycle non - repetitive 300 a @ t p = 8.3 ms half-sine surge current absolute maximum ratings ? pulse width < 300s, duty cycle < 2% parameters limits units conditions t j max.junction temperature range -55 to 150 c t stg max. storage temperature range -55 to 150 c r thjc max. thermal resistance, junction 1.1 c/w dc operation see fig. 4 to case wt weight (typical) 9.3 g die size (typical) 200x200 mils case style to-254aa thermal-mechanical specifications parameters limits units conditions v fm max. forward voltage drop 0.76 v @ 35a t j = -55c see fig. 1 ? 1.07 v @ 70a 0.73 v @ 35a t j = 25c 1.17 v @ 70a 0.74 v @ 35a t j = 125c 1.33 v @ 70a i rm max. reverse leakage current 0.6 ma t j = 25c see fig. 2 ? 70 ma t j = 100c v r = rated v r 200 ma t j = 125c c t max. junction capacitance 2800 pf v r = 5v dc ( 1mhz, 25c ) l s typical series inductance 7.8 nh measured from anode lead to cathode lead electrical specifications 6mm ( 0.025 in.) from package
35SGQ045 www.irf.com 3 fig. 2 - typical values of reverse current vs. reverse voltage fig. 3 - typical junction capacitance vs. reverse voltage fig. 1 - max. forward voltage drop characteristics 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 forward voltage drop - v f (v) 1 10 100 instantaneous forward current - i f (a) tj = -55c tj = 125c tj = 25c 0 10 20 30 40 50 reverse voltage - v r (v) 0.01 0.1 1 10 100 1000 reverse current - i r ( ma ) 125c 100c 75c 25c 0 10 20 30 40 50 reverse voltage -v r (v) 100 1000 10000 junction capacitance - c t (pf) t j = 25c
35SGQ045 4 www.irf.com fig. 5 - max. allowable case temperature vs. average forward current ir world headquarters: 233 kansas st., el segundo, california 90245, usa tel: (310) 252-7105 ir european regional centre: 439/445 godstone rd, whyteleafe, surrey cr3 obl, uk tel: ++ 44 (0)20 8645 8000 ir canada: 15 lincoln court, brampton, ontario l6t3z2, tel: (905) 453 2200 ir germany: saalburgstrasse 157, 61350 bad homburg tel: ++ 49 (0) 6172 96590 ir italy: via liguria 49, 10071 borgaro, torino tel: ++ 39 011 451 0111 ir japan: k&h bldg., 2f, 30-4 nishi-ikebukuro 3-chome, toshima-ku, tokyo 171 tel: 81 (0)3 3983 0086 ir southeast asia: 1 kim seng promenade, great world city west tower, 13-11, singapore 237994 tel: ++ 65 (0)838 4630 ir taiwan: 16 fl. suite d. 207, sec. 2, tun haw south road, taipei, 10673 tel: 886-(0)2 2377 9936 data and specifications subject to change without notice. 10/00 fig. 4 - max. thermal impedance z thjc characteristics 0.01 0.1 1 10 0.00001 0.0001 0.001 0.01 0.1 1 notes: 1. duty factor d = t / t 2. peak t = p x z + t 1 2 j dm thjc c p t t dm 1 2 t , rectangular pulse duration (sec) thermal response (z ) 1 thjc 0.01 0.02 0.05 0.10 0.20 d = 0.50 single pulse (thermal response) 0 10 20 30 40 50 60 average forward current - i f(av) (a) 0 20 40 60 80 100 120 140 160 180 allowable case temprature - (c) 35SGQ045 r thjc = 1.1c/w dc
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