schottky rectifier 8 amp 80sq... series pd-2.047 rev. d 12/97 1 www.irf.com dimensions in millimeters and inches conforms to jedec outline do - 204ar case style and dimensions major ratings and characteristics i f(av) rectangular 8 a waveform v rrm range 35 to 45 v i fsm @ tp = 5 s sine 2400 a v f @ 8 apk, t j = 125c 0.44 v t j range - 55 to 175 c characteristics 80sq... units description/features the 80sq axial leaded schottky rectifier series has been optimized for low reverse leakage at high temperature. the proprietary barrier technology allows for reliable operation up to 175c junction temperature. typical applications are in switching power supplies, converters, free-wheeling diodes, and reverse battery protection. 175 c t j operation high purity, high temperature epoxy encapsulation for enhanced mechanical strength and moisture resistance low forward voltage drop high frequency operation guard ring for enhanced ruggedness and long term reliability
80sq... series pd-2.047 rev. d 11/97 2 www.irf.com v fm max. forward voltage drop (1) 0.53 v @ 8a * see fig. 1 0.60 v @ 16a 0.44 v @ 8a 0.55 v @ 16a i rm max. reverse leakage current (1) 2 ma t j = 25 c * see fig. 2 15 ma t j = 125 c c t max. junction capacitance 900 pf v r = 5v dc , (test signal range 100khz to 1mhz) 25 c l s typical series inductance 10.0 nh measured lead to lead 5mm from 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 80sq units conditions electrical specifications t j max. junction temperature range -55 to 175 c t stg max. storage temperature range -55 to 175 c r thjl max. thermal resistance junction 8.0 c/w dc operation * see fig. 4 to lead 1/8 inch lead length r thja typical thermal resistance, 44 c/w junction to air wt approximate weight 1.4(0.049) g (oz.) case style do - 204ar jedec thermal-mechanical specifications parameters 80sq units conditions (1) pulse width < 300s, duty cycle < 2% i f(av) max. average forward current 8 a 50% duty cycle @ t c = 119 c, rectangular wave form * see fig. 5 i fsm max. peak one cycle non-repetitive 2400 5s sine or 3s rect. pulse surge current * see fig. 7 380 10ms sine or 6ms rect. pulse e as non-repetitive avalanche energy 10 mj t j = 25 c, i as = 1.6 amps, l = 7.8 mh i ar repetitive avalanche current 1.6 a current decaying linearly to zero in 1 sec frequency limited by t j max. v a = 1.5 x v r typical parameters 80sq units conditions absolute maximum ratings a part number 80sq035 80sq040 80sq045 v r max. dc reverse voltage (v) v rwm max. working peak reverse voltage (v) 35 40 45 voltage ratings following any rated load condition and with rated v rrm applied
80sq... series pd-2.047 rev. d 11/97 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 thjl characteristics 100 1000 0 102030405 0 t = 25 c j reverse voltage - v (v) r t junct i on capac it ance - c (pf) fig. 1 - maximum forward voltage drop characteristics .1 1 10 100 0.1.2.3.4.5.6.7.8.911.1 fm f i nst antaneous for war d curr ent - i ( a) t = 175 c t = 125c t = 25c j j j forw ard voltage drop - v (v) .0001 .001 .01 .1 1 10 100 1000 0 5 10 15 20 25 30 35 40 4 5 r r t = 175 c 150c 125c 100c 75c 50c 25c j r everse voltage - v (v) reverse current - i (ma) .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 t , rectangular pulse duration (seconds) thermal im pedance - z ( c /w ) single pulse (therm al resistance) thjl 2 t 1 t p dm n otes: 1. duty factor d = t / t 2. peak t = p x z + t 1 jdm c 2 thjl = 1/ 8 inch
80sq... series pd-2.047 rev. d 11/97 4 www.irf.com fig. 8 - unclamped inductive test circuit fig. 5 - maximum allowable case temperature vs. average forward current fig. 6 - forward power loss characteristics fig. 7 - maximum non-repetitive surge current 0 1 2 3 4 5 6 02468101 2 dc aver age pow er loss - (w atts) f(av) d = 0. 08 d = 0. 17 d = 0. 25 d = 0. 33 d = 0. 50 rm s li mi t average forward c urrent - i (a) 130 140 150 160 170 180 02468101 2 d c al l ow abl e c ase tem perature - ( c ) average forward current - i (a) f(av) 80sq r (d c) = 8. 0 c/w thjl = 1/8 inch 100 1000 10000 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) free-wheel diode 40hfl40s02 current monitor high-speed switch irfp460 l dut rg = 25 ohm vd = 25 volt +
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