schottky rectifier 35a, 45v 25gq045 major ratings and characteristics description/features 02/25/02 case style www.irf.com 1 characteristics 25gq045 units i f(av) 35 a v rrm 45 v i fsm @ tp = 8.3ms half-sine 400 a v f @ 35apk, t j =125c 0.84 v t j , t stg operating and storage -55 to 150 c 1 23 high efficiency series ir case style to-254aa 6.60 [.260] 6.32 [.249] 1.27 [.050] 1.02 [.040] 0.12 [.005] 13.84 [.545] 13.59 [.535] 13.84 [.545] 13.59 [.535] 3.81 [.150] 2x 17.40 [.685] 16.89 [.665] a 1.14 [.045] 0.89 [.035] 0.36 [.014] b a 3x b 20.32 [.800] 20.07 [.790] 3.78 [.149] 3.53 [.139] 123 17.40 [.685] 16.89 [.665] 3.81 [.150] 0.84 [.033] max. c not e s : 1. dime ns ioning & t ole rancing pe r as me y14.5m-1994. 2. al l di me ns i ons ar e s h own in mil l i me t e r s [inch e s ]. 3. cont rol l ing dime ns ion: inch. 4. conf orms t o je de c out line t o-254aa. pd -20354d the 25gq045 schottky rectifier has been expresslydesigned 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 controlled drawings to tx, txv and s levels. hermetically sealed low forward voltage drop high frequency operation guard ring for enhanced ruggedness and longterm reliability electrically isolated cathode anode (isolated base) downloaded from: http:///
25gq045 2 www.irf.com part number 25gq045 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 = 100 c, square waveform see fig. 5 i fsm max. peak one cycle non - repetitive 400 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 1.0 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 0.93 v @ 35a t j = 25 c see fig. 1 1.38 v @ 70a 0.84 v @ 35a t j = 125 c 1.29 v @ 70a i rm max. reverse leakage current 0.8 ma t j = 25 cv r = rated v r see fig. 2 45 ma t j = 125 c c t max. junction capacitance 2600 pf v r = 5v dc ( 1mhz, 25 c ) l s typical series inductance 7.8 nh measured from anode lead to cathode lead 6mm ( 0.025 in.) from package electrical specifications downloaded from: http:///
25gq045 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 0.001 0.01 0.1 1 10 100 0 1 02 03 04 05 0 r a 25 c 100 c 125 c t = 150 c j reverse voltage - v (v) downloaded from: http:///
25gq045 4 www.irf.com fig. 5 - max. allowable case temperature vs. average forward current fig. 4 - max. thermal impedance z thjc characteristics ir world headquarters: 233 kansas st., el segundo, california 90245, usa tel: (310) 252-7105 tac fax: (310) 252-7903 visit us at www.irf.com for sales contact information . data and specifications subject to change without notice. 02/02 25gq045 r thjc (dc) = 1.0 c/w downloaded from: http:///
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