document number: 94573 for technical ques tions, contact: diodes-tech@vishay.com www.vishay.com revision: 20-jan-09 1 high performance schottky generation 5.0, 20 a 20ut04, 20WT04FN vishay high power products note (1) measured connecting 2 anode pins features ? 175 c high performance schottky diode ? very low forward voltage drop ? extremely low reverse leakage ? optimized v f vs. i r trade off for high efficiency ? increased ruggedness for reverse avalanche capability ? rbsoa available ? negligible switching losses ? submicron trench technology ? full lead (pb)-free and rohs compliant devices ? qualified for aec q101 applications ? specific for pv cells bypass diode ? high efficiency smps ? automotive ? high frequency switching ? output rectification ? reverse battery protection ? freewheeling ? dc-to-dc systems ? increased power density systems product summary i f(av) 20 a v rrm 45 v maximum v f at 20 a at 125 c (1) 0.530 v i-pak (to-251aa) 20ut04 20WT04FN d-pak (to-252aa) base cathode anode anode cathode 4 3 2 1 base cathode anode anode cathode 4 3 2 1 major ratings and characteristics symbol characteristics values units v rrm 45 v v f 20 apk, t j = 125 c (typical, measured c onnecting 2 anode pins) 0.480 v t j range - 55 to 175 c voltage ratings parameter symbol test conditions 20ut04 20WT04FN units maximum dc reverse voltage v r t j = 25 c 45 v
www.vishay.com for technical questi ons, contact: diodes-tech@vishay.com document number: 94573 2 revision: 20-jan-09 20ut04, 20WT04FN vishay high power products high performance schottky generation 5.0, 20 a note (1) measured connecting 2 anode pins notes (1) pulse width < 300 s, duty cycle < 2 % (2) only 1 anode pin connected absolute maximum ratings parameter symbol test conditions values units maximum average forward current i f(av) 50 % duty cycle at t c = 153 c, rectangular waveform 20 a maximum peak one cycle non-repetitive surge current i fsm 5 s sine or 3 s rect. pulse following any rated load condition and with rated v rrm applied (1) 900 a 10 ms sine or 6 ms rect. pulse 220 non-repetitive avalanche energy e as t j = 25 c, i as = 7 a, l = 4.4 mh 108 mj repetitive avalanche current i ar limited by frequency of operation and time pulse duration so that t j < t j max. i as at t j max. as a function of time pulse i as at t j max. a electrical specifications parameter symbol test conditions typ. max. units forward voltage drop v fm (1, 2) 10 a t j = 25 c 0.505 0.540 v 20 a 0.570 0.610 10 a t j = 125 c 0.415 0450 20 a 0.520 0.580 reverse leakage current i rm (1) t j = 25 c v r = rated v r - 100 a t j = 125 c - 7 ma junction capacitance c t v r = 5 v dc (test signal range 100 khz to 1 mhz), 25 c 1900 - pf series inductance l s measured lead to lead 5 mm from package body - - nh maximum voltage rate of change dv/dt rated v r - 10 000 v/s thermal - mechanical specifications parameter symbol test conditions values units maximum junction and storage temperature range t j , t stg - 55 to 175 c maximum thermal resistance, junction to case r thjc dc operation 1.2 c/w typical thermal resistance, case to heatsink r thcs 0.3 approximate weight 2g 0.07 oz. marking device case style i-pak 20ut04 case style d-pak 20WT04FN
document number: 94573 for technical ques tions, contact: diodes-tech@vishay.com www.vishay.com revision: 20-jan-09 3 20ut04, 20WT04FN high performance schottky generation 5.0, 20 a vishay high power products fig. 1 - maximum forward voltage drop characteristics 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 forward voltage drop - v fm (v) instantaneous forward current - i f (a) 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1 10 100 tj = 25c tj = 125c tj = 175c reverse current - i r (ma) reverse voltage - v r (v) 0 5 10 15 20 25 30 35 40 45 0.0001 0.001 0.01 0.1 1 10 100 75c 100c 50c 125c 150c 175c 25c reverse voltage - v r (v) junction capacitance - c t (pf) 0 5 10 15 20 25 30 35 40 45 100 1000 10000 t 1 , rectangular pulse duration (seconds) thermal impedance z thjc (c/w) 1e-05 1e-04 1e-03 1e-02 1e-01 1e+00 0.01 0.1 1 10 single pulse (thermal resistance) d = 0.2 d = 0.25 d = 0.33 d = 0.5 d = 0.75
www.vishay.com for technical questi ons, contact: diodes-tech@vishay.com document number: 94573 4 revision: 20-jan-09 20ut04, 20WT04FN vishay high power products high performance schottky generation 5.0, 20 a fig. 5 - maximum allowable case temperature vs. average forward current fig. 6 - forward power loss characteristics fig. 7 - maximum non-repetitive surge current note (1) formula used: t c = t j - (pd + pd rev ) x r thjc ; pd = forward power loss = i f(av) x v fm at (i f(av) /d) (see fig. 6); pd rev = inverse power loss = v r1 x i r (1 - d); i r at v r1 = 80 % rated v r average forward current - i f (av) (a) allowable case temperature (c) 0 5 10 15 20 25 30 120 130 140 150 160 170 180 dc square wave (d=0.50) 80% rated vr applied see note (1) average forward current - i f (av) (a) average power loss - (watts) 0 5 10 15 20 25 30 0 5 10 15 20 180 120 90 60 30 dc rms limit square wave pulse duration - t p (microsec) non-repetitive surge current - i fsm (a) 10 100 1000 10000 100 1000
document number: 94573 for technical ques tions, contact: diodes-tech@vishay.com www.vishay.com revision: 20-jan-09 5 20ut04, 20WT04FN high performance schottky generation 5.0, 20 a vishay high power products fig. 8 - reverse bias safe operating area (avalanche current vs. rectangular pulse duration) fig. 9 - reverse bias safe operating area (avalanche energy vs. re ctangular pulse duration) 0 0 1 0 1 1 0.1 1 10 100 1000 tj = 25c tj = 125c tj = 175c rectangular pulse duration ( sec) avalanche current (a) rectangular pulse duration ( sec) avalanche energy (mj) 0 0 1 0 1 1 10 100 1000 tj = 25c tj = 125c tj = 175c
www.vishay.com for technical questi ons, contact: diodes-tech@vishay.com document number: 94573 6 revision: 20-jan-09 20ut04, 20WT04FN vishay high power products high performance schottky generation 5.0, 20 a ordering information table 1 - current rating (20 a) 2 - package: u = i-pak w = d-pak 3 - t = trench 4 - voltage code (45 v) device code 5 13 24 6 20 u t 04 fn trl 6 - d-pak, i-pak: none = tube (75 pieces) d-pak only: tr = tape and reel trl = tape and reel (left oriented) trr = tape and reel (right oriented) 5 - to-252aa (d-pak) links to related documents dimensions http://www.vishay.com/doc?95024 part marking information http://www.vishay.com/doc?95025 packaging information http://www.vishay.com/doc?95033 spice model http://www.vishay.com/doc?95027
document number: 91000 www.vishay.com revision: 18-jul-08 1 disclaimer legal disclaimer notice vishay all product specifications and data are subject to change without notice. vishay intertechnology, inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively, ?vishay?), disclaim any and all liability fo r any errors, inaccuracies or incompleteness contained herein or in any other disclosure relating to any product. vishay disclaims any and all li ability arising out of the use or application of any product describ ed herein or of any information provided herein to the maximum extent permit ted by law. the product specifications do not expand or otherwise modify vishay?s terms and conditions of purcha se, including but not limited to the warranty expressed therein, which apply to these products. no license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document or by any conduct of vishay. the products shown herein are not designed for use in medi cal, life-saving, or life-sustaining applications unless otherwise expressly indicated. customers using or selling vishay products not expressly indicated for use in such applications do so entirely at their own risk and agree to fully indemnify vishay for any damages arising or resulting from such use or sale. please contact authorized vishay personnel to obtain written terms and conditions regarding products designed for such applications. product names and markings noted herein may be trademarks of their respective owners.
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