i f(av) rectangular 400 a waveform v rrm range 35 to 50 v i fsm @ tp = 5 s sine 29,000 a v f @ 200apk, t j =125c 0.52 v (per leg) t j range - 55 to 150 c characteristics 400cnq... units major ratings and characteristics description/ features the 400cnq center tap, high current, schottky rectifier module series 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, welding, and re- verse battery protection. 150 c t j operation center tap module 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 to-244ab schottky rectifier 400 amp 400cnq... series bulletin pd-2.264 rev. d 05/02 base anode 2 63.50 [2.500] 60.96 [2.400] 23.55 [.927] 20.42 [.804] 14.99 [.590] 15.75 [.620] 20.32 [.800] 17.78 [.700] 39.75 [1.565] 40.26 [1.585] 80.01 [3.150] 34.925 [1.375] 3.35 [.132] 3.02 [.119] 90.17 [3.550] 92.71 [3.650] 7.49 [.295] 6.99 [.275] 2x ? 10.41 [.410] 9.65 [.380] ? 4.70 [.185] 4.95 [.195] 1/4-20 slotted hex common cathode ref. terminal lug common cathode anode 1 terminal lug ? notes: 1. dimensions are shown in millimeters [inches]. 2. controlling dimension: millimeter modified jedec outline to-244ab dimensions in millimeters and (inches) 1 www.irf.com
400cnq... series 2 bulletin pd-2.264 rev. d 05/02 www.irf.com absolute maximum ratings parameters 400cnq units conditions a i f(av) max. average forward (per leg) 200 a 50% duty cycle @ t c = 114 c, rectangular wave form current * see fig. 5 (per device) 400 i fsm max. peak one cycle non-repetitive 29,000 5s sine or 3s rect. pulse surge current (per leg) * see fig. 7 3400 10ms sine or 6ms rect. pulse e as non-repetitive avalanche energy 180 mj t j = 25 c, i as = 40 amps, l = 0.22 mh (per leg) i ar repetitive avalanche current 40 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 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 (per leg) r thjc max. thermal resistance junction 0.10 c/w dc operation to case (per package) r thcs typical thermal resistance, case 0.10 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 modified jedec thermal-mechanical specifications parameters 400cnq units conditions t j = 25 c v r = rated v r kg-cm (ibf-in) electrical specifications v fm max. forward voltage drop 0.57 v @ 200a (per leg) * see fig. 1 (1) 0.73 v @ 400a 0.52 v @ 200a 0.68 v @ 400a i rm max. reverse leakage current 20 ma t j = 25 c (per leg) * see fig. 2 (1) 1 a t j = 125 c v f(to) threshold voltage 0.32 v t j = t j max. r t forward slope resistance 0.81 m ? c t max. junction capacitance (per leg) 10,300 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 ) parameters 400cnq units conditions t j = 125 c following any rated load condition and with rated v rrm applied part number 400cnq035 400CNQ040 400cnq045 400cnq050 v r max. dc reverse voltage (v) v rwm max. working peak reverse voltage (v) 35 40 45 50 voltage ratings
400cnq... series 3 bulletin pd-2.264 rev. d 05/02 www.irf.com fig. 2 - typical values of reverse current vs. reverse voltage (per leg) fig. 3 - typical junction capacitance vs. reverse voltage (per leg) fig. 4 - max. thermal impedance z thjc characteristics (per leg) fig. 1 - max. forward voltage drop characteristics (per leg) 1 10 100 1000 0 0.2 0.4 0.6 0.8 1 1.2 in sta n tan e ous f or wa rd c urre n t - i (a ) t = 150 c t = 125 c t = 25 c j j j f fm forw ard voltage d rop - v (v ) 0.01 0.1 1 10 100 1000 10000 0 5 10 15 20 25 30 35 40 45 r r 125 c 100 c 75 c 50 c 25 c reverse current - i (ma) t = 150 c j reverse voltage - v (v) 1000 10000 0 1020304050 t = 25 c j r t junction capacitance - c (pf) reverse voltage - v (v) 0.001 0.01 0.1 1 0.00001 0.0001 0.001 0.01 0.1 1 10 thjc t , rectangular pulse duration (seco nds) single pulse (thermal resistance) 1 th ermal im pedance z ( c/w ) d = 0.75 d = 0.50 d = 0.33 d = 0.25 d = 0.20 j dm thjc c notes: 1. d uty factor d = t / t 2. peak t = p x z + t 2 t 1 t p dm 1 2
400cnq... series 4 bulletin pd-2.264 rev. d 05/02 www.irf.com fig. 7 - max. non-repetitive surge current (per leg) fig. 5 - max. allowable case temperature vs. average forward current (per leg) fig. 8 - unclamped inductive test circuit fig. 6 - forward power loss characteristics (per leg) 60 70 80 90 100 110 120 130 140 150 160 0 50 100 150 200 250 300 dc allowable case temperature - ( c) f(av) see note (2) square wave (d = 0.50) 80% rated v applied r average forw ard c urrent - i (a) 0 20 40 60 80 100 120 140 160 180 200 0 50 100 150 200 250 300 dc average power loss - (watts) f(av) rms limit d = 0.20 d = 0.25 d = 0.33 d = 0.50 d = 0.75 average forward current - i (a) 1000 10000 100000 10 100 1000 10000 fsm non-repetitive surge c urren t - i (a) p square w ave pulse d uration - t (m icrosec) at any rated load condition and w ith rated v applied following surge rrm free-wheel d io d e 40hfl40s02 current monitor high-speed sw itch 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
400cnq... series 5 bulletin pd-2.264 rev. d 05/02 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. 05/02 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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