schottky rectifier 30 amp, 45v 30ljq045 major ratings and characteristics description/features case style www.irf.com 1 high efficiency series the 30ljq045 schottky rectifier has been expressly designed to meet the rigorous requirements of high relibility environments. it is packaged in the hermetic surface mount smd-0.5 ceramic 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 ? surface mount ? lightweight pd-94288b characteristics limits units i f(av) rectangular waveform 30 a v rrm 45 v i fsm @tp = 8.3ms half-sine 100 a v f @30apk, t j =125c 0.66 v t j , t stg operating and storage -55 to 150 c cathode anode anode case outline and dimensions - smd-0.5
30ljq045 2 www.irf.com part number 30ljq045 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 30 a 50% duty cycle @ t c = 107 c, square waveform see fig. 5 i fsm max. peak one cycle non - repetitive 100 a @ t p = 8.3 ms half-sine surge current absolute maximum ratings 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 1.6 c/w dc operation see fig. 4 to case wt weight (typical) 1.0 g die size (typical) 115x170 mils case style smd-0.5 thermal-mechanical specifications pulse width < 300s, duty cycle < 2% parameters limits units conditions v fm max. forward voltage drop 0.86 v @ 30a t j = -55c see fig. 1 1.07 v @ 60a 0.71 v @ 30a t j = 25c 0.94 v @ 60a 0.66 v @ 30a t j = 125c 0.88 v @ 60a i rm max. reverse leakage current 0.1 ma t j = 25c see fig. 2 6.4 ma t j = 100c v r = rated v r 30 ma t j = 125c c t max. junction capacitance 1300 pf v r = 5v dc ( 1mhz, 25c ) l s typical series inductance 4.8 nh measured from center of cathode pad to center of electrical specifications anode pad
30ljq045 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 10 20 30 40 50 reverse voltage -v r (v) 100 1000 10000 j u n c t i o n c a p a c i t a n c e - c t ( p f ) t j = 25c 0 10 20 30 40 50 reverse voltage - v r (v) 0.0001 0.001 0.01 0.1 1 10 100 r e v e r s e c u r r e n t - i r ( m a ) 125c 75c 25c 100c 0.0 0.2 0.4 0.6 0.8 1.0 1.2 forward voltage drop - v f (v) 1 10 100 i n s t a n t a n e o u s f o r w a r d c u r r e n t - i f ( a ) tj = -55c tj = 125c tj = 25c
30ljq045 4 www.irf.com fig. 5 - max. allowable case temperature vs. average forward current 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 average forward current - i f(av) (a) 0 20 40 60 80 100 120 140 160 180 a l l o w a b l e c a s e t e m p r a t u r e - ( c ) 30ljq045 r thjc = 1.6c/w dc ir world headquarters: 233 kansas st., el segundo, california 90245, usa tel: (310) 252-7105 ir leominster : 205 crawford st., leominster, massachusetts 01453, usa tel: (978) 534-5776 tac fax: (310) 252-7903 visit us at www.irf.com for sales contact information . data and specifications subject to change without notice. 09/2007
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