schottky rectifier 20 amp 20tq... 20tq...s bulletin pd-20241 rev. c 06/06 1 www.irf.com major ratings and characteristics i f(av) rectangular 20 a waveform v rrm range 35 / 45 v i fsm @ tp = 5 s sine 1800 a v f @ 20 apk, t j = 125c 0.51 v t j range - 55 to 150 c characteristics values units the 20tq schottky rectifier 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 di- odes, and reverse battery protection. 150 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 i f(av) = 19amp v r = 35/ 45v case styles 20tq... to-220ac 20tq... s d 2 pak anode 1 3 base cathode 2 n/c anode 1 3 c athode base cathode 2
20tq... series 2 bulletin pd-20241 rev. c 06/06 www.irf.com v fm max. forward voltage drop (1) 0.57 v @ 20a * see fig. 1 0.73 v @ 40a 0.51 v @ 20a 0.67 v @ 40a i rm max. reverse leakage current (1) 2.7 ma t j = 25 c * see fig. 2 105 ma t j = 125 c c t max. junction capacitance 1400 pf v r = 5v dc (test signal range 100khz to 1mhz) 25 c l s typical series inductance 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 v r = rated v r electrical specifications parameters 20tq units conditions (1) pulse width < 300 s, 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 1.50 c/w dc operation * see fig. 4 to case r thcs typical thermal resistance, case to 0.50 c/w mounting surface , smooth and greased heatsink wt approximate weight 2 (0.07) g (oz.) t mounting torque min. 6 (5) max. 12 (10) marking device 20tq045 case style to-220 20tq045s case style d 2 pak thermal-mechanical specifications parameters 20tq units conditions i f(av) max. average forward current 20 a 50% duty cycle @ t c = 116 c, rectangular wave form * see fig. 5 i fsm max. peak one cycle non-repetitive 1800 5 s sine or 3 s rect. pulse surge current * see fig. 7 400 10ms sine or 6ms rect. pulse e as non-repetitive avalanche energy 27 mj t j = 25 c, i as = 4 amps, l = 3.4 mh i ar repetitive avalanche current 4 a current decaying linearly to zero in 1 sec frequency limited by t j max. v a = 1.5 x v r typical parameters 20tq units conditions absolute maximum ratings a following any rated load condition and with rated v rrm applied kg-cm (ibf-in) voltage ratings part number 20tq035 20tq040 20tq045 v r max. dc reverse voltage (v) v rwm max. working peak reverse voltage (v) 35 40 45
20tq... series 3 bulletin pd-20241 rev. c 06/06 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 .001 .01 .1 1 10 100 1000 0 5 10 15 20 25 30 35 40 4 5 r r 125c 100c 75c 50c 25c reverse vol tage - v (v) r everse current - i (m a) t = 150c j 100 1000 10000 0 1020304050 t = 25c j r everse voltage - v (v) r t junction c apacitance - c (pf) .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 , rectangular pulse d urati on (seconds) therm al im pedance - z (c /w ) single pulse (therm al resistance) 2 t 1 t p dm n otes: 1. duty factor d = t / t 2. peak t = p x z + t 1 jdm thjc c 2 fig. 1 - maximum forward voltage drop characteristics .1 1 10 100 1000 0.2.4.6.811.21.41.61. 8 fm f instantaneous forward c urrent - i (a) forw ard vol tage drop - v (v) t = 150c t = 125c t = 25c j j j
20tq... series 4 bulletin pd-20241 rev. c 06/06 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 2 4 6 8 10 12 14 16 18 0 5 10 15 20 25 30 d c average power loss - (w atts) f( av) d = 0. 08 d = 0. 17 d = 0. 25 d = 0. 33 d = 0. 50 r m s li m it average forw ard current - i (a) 115 125 135 145 155 0 5 10 15 20 25 3 0 dc allow abl e case tem perature - (c ) average forw ard current - i (a) f(av) 20tq r (d c) = 1.50c/w thjc 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- w heel diode 40hfl40s 02 current monitor hig h-speed switch irfp460 l dut rg = 25 o h m vd = 25 volt +
20tq... series 5 bulletin pd-20241 rev. c 06/06 www.irf.com outline table conform to jedec outline to-220ac dimensions in millimeters and (inches) conform to jedec outline d 2 pak (smd-220) dimensions in millimeters and (inches)
20tq... series 6 bulletin pd-20241 rev. c 06/06 www.irf.com lot code assembly rectifier international example: in the assembly line "c" assembled on ww 19, 2001 lot code 1789 logo line c part number date code week 19 year 1 = 2001 this is a 20tq045 part marking information d 2 pak dimensions in millimeters and (inches) tape & reel information to-220ac lot code 8024 assembled on ww 02, 2000 assembly lot code logo international rectifier line c week 02 date code year 0 = 2000 part number this is a 20tq045s 20tq045s
20tq... series 7 bulletin pd-20241 rev. c 06/06 www.irf.com ordering information table 20 t q 045 s - device code 1 5 24 3 1 - current rating (20 = 20a) 2 - package t = to-220 3 - schottky "q" series 4 - voltage ratings 5 - y none = to-220 y s=d 2 pak 6 - y none = standard production y pbf = lead-free tube standard pack quantity : 50 pieces 6 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. 06/06 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. 035 = 35v 040 = 40v 045 = 45v
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