the 409DMQ schottky rectifier doubler module series has been optimized for low reverse leakage at high temperature. the proprietary barrier technology allows for reliable operation up to 175 c junction temperature. typical applications are in high current switching power supplies, plating power supplies, ups systems, converters, free-wheeling diodes, welding, 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 description/ features major ratings and characteristics i f(av) rectangular 400 a waveform v rrm 135 to 150 v i fsm @ tp = 5 s sine 25,500 a v f @ 200apk, t j =125c 0.72 v (per leg) t j range - 55 to 175 c characteristics 409DMQ... units schottky rectifier 409DMQ... series 400 amp bulletin pd-20724 rev. b 10/02 1 to-244ab isolated doubler modified jedec outline to-244ab isolated dimensions in millimeters and (inches) www.irf.com
409DMQ... series 2 bulletin pd-20724 rev. b 10/02 www.irf.com parameters 409DMQ135 409DMQ150 v r max. dc reverse voltage (v) v rwm max. working peak reverse voltage (v) 135 150 voltage ratings absolute maximum ratings following any rated load condition and with rated v rrm applied parameters 409DMQ units conditions a i f(av) max. average forward 400 a 50% duty cycle @ t c = 80 c, rectangular wave form current ( per device ) i fsm max. peak one cycle non-repetitive 20000 5s sine or 3s rect. pulse surge current (per leg) 2300 10ms sine or 6ms rect. pulse e as non-repetitive avalanche energy 15 mj t j = 25 c, i as = 1 amps, l = 30 mh (per leg) i ar repetitive avalanche current 1 a current decaying linearly to zero in 1 sec (per leg) frequency limited by t j max. v a = 1.5 x v r typical (1) pulse width < 300s, duty cycle <2% t j max. junction temperature range -55 to 175 c t stg max. storage temperature range -55 to 175 c r thjc max. thermal resistance junction 0.4 c/w dc operation to case (per leg) r thjc max. thermal resistance junction 0.2 c/w dc operation to case (per package) r thcs typical thermal resistance, case 0.1 c/w mounting surface , smooth and greased to heatsink wt approximate weight 79 (2.80) g (oz.) t mounting torque base min. 24 (20) max. 35 (30) mounting torque center hole typ. 13.5 (12) terminal torque min. 35 (30) max. 46 (40) case style to - 244ab isolated doubler modified jedec thermal-mechanical specifications parameters 409DMQ units conditions v fm max. forward voltage drop 1.03 v @ 200a (per leg) (1) 1.21 v @ 400a 0.71 v @ 200a 0.82 v @ 400a i rm max. reverse leakage current 6 ma t j = 25 c (per leg) (1) 85 ma t j = 125 c c t max. junction capacitance (per leg) 6000 pf v r = 5v dc , (test signal range 100khz to 1mhz) 25c l s typical series inductance (per leg) 5.0 nh from top of terminal hole to mounting plane dv/dt max. voltage rate of change 10000 v/ s (rated v r ) t j = 25 c t j = 125 c v r = rated v r parameters 409DMQ units conditions kg-cm (ibf-in) electrical specifications
409DMQ... series 3 bulletin pd-20724 rev. b 10/02 www.irf.com 1 10 100 1000 0 0.4 0.8 1.2 1.6 2 t = 150?c t = 125?c t = 25?c j j j 0 .001 0.01 0.1 1 10 100 1000 0 30 60 90 120 150 150 ? c 125 ? c 100 ? c 75 ? c 50 ? c 25 ? c t = 175 ? c j 100 1000 10000 0 306090120 t = 25 ? c j 0 .001 0.01 0.1 1 0.00001 0.0001 0.001 0.01 0.1 1 10 100 single pulse (thermal resistance) d = 0.75 d = 0.50 d = 0.33 d = 0.25 d = 0.20 2 t 1 t p dm notes: 1. duty factor d = t / t 2. peak t = p x z + t j dm thjc c 2 1 fig. 2 - typical values of reverse current vs. reverse voltage fig. 1 - max. forward voltage drop characteristics fig. 4 - max. thermal impedance z thjc characteristics forward voltage drop - v fm (v) instantaneous forward current - i f (a) reverse current - i r (ma) reverse voltage - v r (v) reverse voltage - v r (v) junction capacitance - c t (pf) t 1 , rectangular pulse duration (seconds) thermal impedance z thjc (c/w) fig. 3 - typical junction capacitance vs. reverse voltage
409DMQ... series 4 bulletin pd-20724 rev. b 10/02 www.irf.com fig. 8 - unclamped inductive test circuit free-wheel diode 40hfl40s02 current monitor high-speed switch irfp460 l dut rg = 25 ohm vd = 25 volt + (2) formula used: t c = t j - (pd + pd rev ) x r thjc ; pd = forward power loss = i f(av) x v fm @ (i f(av) / d) (see fig. 6); pd rev = inverse power loss = v r1 x i r (1 - d); i r @ v r1 = 80% rated v r 40 60 80 100 120 140 160 180 0 200 400 600 dc see note (2) square wave (d = 0.50) rated v applied r 0 100 200 300 400 500 600 0 100 200 300 400 500 600 dc rms limit d = 0.20 d = 0.25 d = 0.33 d = 0.50 d = 0.75 1000 10000 100000 10 100 1000 10000 at any rated load condition and with rated v applied following surge rrm fig. 5 - max. allowable case temperature vs. average forward current fig. 6 - forward power loss characteristics average forward current - i f (av) (a) average forward current - i f (av) (a) square wave pulse duration - t p (microsec) fig. 7 - max. non-repetitive surge current allowable case temperature - (c) average power loss - (watts) non-repetitive surge current - i fsm (a)
409DMQ... series 5 bulletin pd-20724 rev. b 10/02 www.irf.com ir world headquarters: 233 kansas st., el segundo, california 90245, usa tel: (310) 252-7105 tac fax: (310) 252-7309 visit us at www.irf.com for sales contact information. 10/02 data and specifications subject to change without notice. this product has been designed and qualified for industrial level. qualification standards can be found on ir's web site.
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