schottky rectifier 20 amp 20ctq... 20ctq...s 20ctq... -1 www.irf.com 1 bulletin pd-20056 rev. c 07/06 major ratings and characteristics i f(av) rectangular 20 a waveform v rrm range 35 / 45 v i fsm @ tp = 5 s sine 1060 a v f @ 10 apk, t j = 125c 0.57 v (per leg) t j range - 55 to 175 c characteristics values units description/features the 20ctq center tap schottky rectifier 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 switching power supplies, converters, free-wheeling diodes, and reverse battery protection. 175 c t j operation center tap to-220 package low forward voltage drop high purity, high temperature epoxy encapsulation for enhanced mechanical strength and moisture resistance high frequency operation guard ring for enhanced ruggedness and long term reliability i f(av) = 20amp v r = 35/ 45v case styles 20ctq... 20ctq... s 20ctq... -1 to-220 d 2 pak anode 1 3 2 base common cathode 2 a node common cathode to-262 anode 1 3 2 base common cathode 2 a node common cathode anode 1 3 2 base common cathode 2 a node common cathode
20ctq... series 2 bulletin pd-20056 rev. c 07/06 www.irf.com i f(av) max. average forward current 20 a 50% duty cycle @ t c = 145c, rectangular wave form * see fig. 5 i fsm max. peak one cycle non-repetitive 1060 5 s sine or 3 s rect. pulse surge current (per leg) * see fig. 7 265 10ms sine or 6ms rect. pulse e as non-repetitive avalanche energy 13 mj t j = 25 c, i as = 2.0 amps, l = 6.5 mh (per leg) i ar repetitive avalanche current 2.0 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 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 3.25 c/w dc operation * see fig. 4 to case (per leg) r thjc max. thermal resistance junction 1.63 c/w dc operation to case (per package) r thcs typical thermal resistance, case 0.50 c/w mounting surface , smooth and greased to heatsink wt approximate weight 2 (0.07) g (oz.) t mounting torque min. 6 (5) max. 12 (10) thermal-mechanical specifications kg-cm (ibf-in) v fm max. forward voltage drop 0.64 v @ 10a (per leg) * see fig. 1 (1) 0.76 v @ 20a 0.57 v @ 10a 0.68 v @ 20a i rm max. reverse leakage current 2 ma t j = 25 c (per leg) * see fig. 2 (1) 15 ma t j = 125 c c t max. junction capacitance(per leg) 900 pf v r = 5v dc (test signal range 100khz to 1mhz) 25c l s typical series inductance (per leg) 8.0 nh measured lead to lead 5mm from package body dv/dt max. voltage rate of change 10000 v/ s (rated v r ) t j = 25 c t j = 125 c electrical specifications (1) pulse width < 300 s, duty cycle <2% v r = rated v r absolute maximum ratings following any rated load condition and with rated v rrm applied parameters 20ctq units conditions a part number 20ctq035 20CTQ040 20ctq045 v r max. dc reverse voltage (v) v rwm max. working peak reverse voltage (v) voltage ratings 35 40 45 parameters 20ctq units conditions parameters 20ctq units conditions
20ctq... series 3 bulletin pd-20056 rev. c 07/06 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 characteris- tics (per leg) .0001 .001 .01 .1 1 10 100 1000 0 5 10 15 20 25 30 35 40 45 r r t = 175c 150c 125c 100c 75c 50c 25c j reverse voltage - v (v) r everse c urrent - i (m a) 100 1000 0 1020304050 t = 25c j reverse voltage - v (v) r t junction capacitance - c (pf) .1 1 10 100 1000 0.2.4.6.811.21.41.61. 8 fm f instantaneous forward c urrent - i (a) t = 175c t = 125c t = 25c j j j forw ard voltage drop - v (v) .001 .01 .1 1 10 .00001 .0001 .001 .01 .1 1 10 100 d = 0.33 d = 0.50 d = 0.25 d = 0.17 d = 0.08 1 thjc t , r ectangular pulse d uration (seconds) therm al im pedance - z (c /w ) single pulse (therm al resi stance) 2 t 1 t p dm not es: 1. duty factor d = t / t 2. peak t = p x z + t 1 jdmthjc c 2
20ctq... series 4 bulletin pd-20056 rev. c 07/06 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) 145 150 155 160 165 170 175 180 05101 5 d c al l owabl e case tem perature - (c) average forward current - i (a) f( av) 20ctq r (d c) = 3.25c/w thjc 0 1 2 3 4 5 6 7 8 9 0 5 10 15 d c average power loss - (w atts) f(av) d = 0. 08 d = 0. 17 d = 0. 25 d = 0. 33 d = 0. 50 rm s li m it average forward current - i (a) 100 1000 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 40hfl40s 02 current monitor hig h-speed switch irfp460 l dut rg = 25 ohm vd = 25 volt +
20ctq... series 5 bulletin pd-20056 rev. c 07/06 www.irf.com conform to jedec outline to-220ab outline table conform to jedec outline d 2 pak (smd-220) dimensions in millimeters and (inches)
20ctq... series 6 bulletin pd-20056 rev. c 07/06 www.irf.com outline table modified jedec outline to-262 dimensions in millimeters and (inches) dimensions in millimeters and (inches) tape & reel information
20ctq... series 7 bulletin pd-20056 rev. c 07/06 www.irf.com lot code assembly rectifier international example: assembled on ww 19, 2000 in the assembly line "c" this is a 20ctq045 lot code 1789 logo line c part number date code year 0 = 2000 week 19 assembly lot code international rectifier logo example: lot code 1789 assembled on ww 19, 2002 in assembly line "c" year 2 = 2002 part number line c week 19 date code this is a 20ctq045-1 assembled on ww 02, 2003 lot code 8024 in assembly line "c" logo lot code assembly rectifier international week 02 year 3 = 2003 date code line c part number this is a 20ctq045s 20ctq045s part marking information d 2 pak to-262 to-220
20ctq... series 8 bulletin pd-20056 rev. c 07/06 www.irf.com 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. ordering information table 20 c t q 045 s trl - device code 1 5 2 4 3 6 1 - current rating (20a) 2 - circuit configuration c = common cathode 3 - t = to-220 4 - schottky "q" series 5 - voltage ratings 6 - y s = d 2 pak y -1= to-262 7 - y none = tube (50 pieces) y trl = tape & reel (left oriented - for d 2 pak only) y trr = tape & reel (right oriented - for d 2 pak only) 8 - y none = standard production y pbf = lead-free 7 8 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. 07/06 035 = 35v 040 = 40v 045 = 45v
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