schottky rectifier 240 amp 242NQ030 pd-2.281 rev. a 12/97 1 www.irf.com dimensions in millimeters and inches outline half pak module case style and dimensions major ratings and characteristics i f(av) rectangular 240 a waveform v rrm 30 v i fsm @ tp = 5 s sine 27,000 a v f @ 240apk, t j =125c 0.42 v t j range - 55 to 150 c characteristics 242NQ030 units the 242NQ030 high current schottky rectifier module has been optimized for very low forward voltage drop, with moderate leakage. the proprietary barrier technology allows for reliable operation up to 150 c junction temperature. typical applications are in switching power supplies, converters, free- wheeling diodes, and reverse battery protection. 150 c t j operation unique high power, half-pak module replaces four parallel do-5's easier to mount and lower profile than do-5's high purity, high temperature epoxy encapsulation for enhanced mechanical strength and moisture resistance very low forward voltage drop high frequency operation guard ring for enhanced ruggedness and long term reliability description/features
242NQ030 pd-2.281 rev. a 12/97 2 www.irf.com 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 0.20 c/w dc operation * see fig. 4 to case r thcs typical thermal resistance, case to 0.15 c/w mounting surface , smooth and greased heatsink wt approximate weight 25.6 (0.9) g (oz.) t mounting torque min. 40 (35) non-lubricated threads max. 58 (50) terminal torque min. 58 (50) max. 86 (75) case style half pak module thermal-mechanical specifications parameters 242nq units conditions kg-cm (ibf-in) v fm max. forward voltage drop (1) 0.51 v @ 240a * see fig. 1 0.62 v @ 480a 0.42 v @ 240a 0.54 v @ 480a i rm max. reverse leakage current (1) 20 ma t j = 25 c * see fig. 2 1120 ma t j = 125 c c t max. junction capacitance 14,800 pf v r = 5v dc , (test signal range 100khz to 1mhz) 25 c l s typical series inductance 5.0 nh from top of terminal hole to mounting plane 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 242nq units conditions (1) pulse width < 300s, duty cycle < 2% electrical specifications i f(av) max. average forward current 240 a 50% duty cycle @ t c = 111 c, rectangular wave form * see fig. 5 i fsm max. peak one cycle non-repetitive 27,000 5s sine or 3s rect. pulse surge current * see fig. 7 3000 10ms sine or 6ms rect. pulse e as non-repetitive avalanche energy 216 mj t j = 25 c, i as = 48 amps, l = 0.19 mh i ar repetitive avalanche current 48 a current decaying linearly to zero in 1 sec frequency limited by t j max. v a = 1.5 x v r typical parameters 242nq units conditions a following any rated load condition and with rated v rrm applied part number 242NQ030 v r max. dc reverse voltage (v) v rwm max. working peak reverse voltage (v) 30 voltage ratings absolute maximum ratings
242NQ030 pd-2.281 rev. a 12/97 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 thjc characteristics fig. 1 - maximum forward voltage drop characteristics 1 10 100 1000 0.1.2.3.4.5.6. 7 fm f instantaneous forward current - i (a) forw ard voltage drop - v (v) t = 150 c t = 125c t = 25c j j j .01 .1 1 10 100 1000 10000 0 5 10 15 20 25 3 0 r r 125 c 100c 75c 50c 25c reverse voltage - v (v) r everse current - i (m a) t = 150c j .001 .01 .1 1 .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 duration (seconds) ther m al im pedance - z ( c/ w ) single pulse ( thermal resi st ance) 2 t 1 t p d m not es: 1. duty factor d = t / t 2. peak t = p x z + t 1 jd mthjc c 2 1000 10000 100000 0 5 10 15 20 25 30 3 5 t = 25 c j reverse vol t age - v ( v) r t junct i on capaci tanc e - c (pf)
242NQ030 pd-2.281 rev. a 12/97 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 25 50 75 100 125 150 0 50 100 150 200 250 300 35 0 dc average power loss - (w atts) f(av) d = 0. 08 d = 0. 17 d = 0. 25 d = 0. 33 d = 0. 50 r ms li m it average forw ard c urrent - i (a) 110 120 130 140 150 160 0 50 100 150 200 250 300 35 0 dc all owabl e case tem perature - ( c) aver age for w ard current - i (a) f(av) 242nq 030 r (dc ) = 0.20 c /w thjc 1000 10000 100000 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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