document number: 93954 for technical ques tions, contact: diodes-tech@vishay.com www.vishay.com revision: 22-aug-08 1 schottky rectifier, 20 a 20L15TS vishay high power products features ? 125 c t j operation (v r < 5 v) ? single diode configuration ? optimized for or-ing applications ? ultra low forward voltage drop ? guard ring for enhanced ruggedness and long term reliability ? high purity, high temperature epoxy encapsulation for enhanced mechanical strength and moisture resistance ? designed and qualified for q101 level description the schottky rectifier module ha s been optimized for ultra low forward voltage drop specifically for the or-ing of parallel power supplies. the proprietary barrier technology allows for reliable operation up to 125 c junction temperature. typical applicatio ns are in parallel switching power supplies, converters, re verse battery protection, and redundant power subsystems. product summary i f(av) 20 a v r 15 v i rm 600 ma at 100 c b as e c a thode d 2 pak n/c anode 1 3 2 major ratings and characteristics symbol characteristics values units i f(av) rectangular waveform 20 a v rrm 15 v i fsm t p = 5 s sine 700 a v f 19 apk, t j = 125 c (typical) 0.25 v t j range - 55 to 125 c voltage ratings parameter symbol test conditions 20L15TS units maximum dc reverse voltage v r t j = 100 c 15 v maximum working peak reverse voltage v rwm absolute maximum ratings parameter symbol test conditions values units maximum average forward current see fig. 5 i f(av) 50 % duty cycle at t c = 85 c, rectangular waveform 20 a maximum peak one c ycle non-repetitive surge current see fig. 7 i fsm 5 s sine or 3 s rect. pulse following any rated load condition and with rated v rrm applied 700 10 ms sine or 6 ms rect. pulse 330 non-repetitive avalanche energy e as t j = 25 c, i as = 2 a, l = 6 mh 10 mj repetitive avalanche current i ar current decaying linearly to zero in 1 s frequency limited by t j maximum v a = 1.5 x v r typical 2a
www.vishay.com for technical questi ons, contact: diodes-tech@vishay.com document number: 93954 2 revision: 22-aug-08 20L15TS vishay high power products schottky rectifier, 20 a note (1) pulse width < 300 s, duty cycle < 2 % electrical specifications parameter symbol test conditions typ. max. units forward voltage drop see fig. 1 v fm (1) 19 a t j = 25 c -0.41 v 40 a - 0.52 19 a t j = 125 c 0.25 0.33 40 a 0.37 0.50 reverse leakage current see fig. 2 i rm (1) t j = 25 c v r = rated v r -10 ma t j = 100 c - 600 threshold voltage v f(to) t j = t j maximum 0.182 v forward slope resistance r t 7.6 m maximum junction capacitance c t v r = 5 v dc , (test signal range 100 khz to 1 mhz) 25 c - 2000 pf typical series inductance l s measured lead to lead 5 mm from package body 8 - 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 temperature range t j - 55 to 125 c maximum storage temperature range t stg - 55 to 150 maximum thermal resistance, junction to case r thjc dc operation see fig. 4 1.5 c/w typical thermal resistance, case to heatsink r thcs mounting surface, smooth and greased (for to-220) 0.50 maximum thermal resistance, junction to ambient r thja dc operation 40 approximate weight 2g 0.07 oz. mounting torque minimum non-lubricated threads 6 (5) kgf ? cm (lbf ? in) maximum 12 (10) marking device case style d 2 pak 20L15TS
document number: 93954 for technical ques tions, contact: diodes-tech@vishay.com www.vishay.com revision: 22-aug-08 3 20L15TS schottky rectifier, 20 a vishay high power products fig. 1 - maximum forward voltage drop characteristic s fig. 2 - typical values of reverse current vs. reverse voltage fig. 3 - typical junction c apacitance vs. reverse voltage fig. 4 - maximum thermal impedance z thjc characteristics 1 10 100 1000 i f - instantaneous forward current (a) v fm - forward voltage drop (v) 0.2 0.6 1.2 1.6 1.4 0.8 0.4 0 1.0 t j = 125 c t j = 75 c t j = 25 c 0.1 10 1 1000 100 i r - reverse current (ma) v r - reverse voltage (v) 3912 6 0 15 t j = 100 c t j = 75 c t j = 50 c t j = 25 c 100 1000 10 000 c t - junction capacitance (pf) v r - reverse voltage (v) 15 20 10 5 0 t j = 25 c 0.01 0.1 1 10 0.00001 0.0001 0.001 0.01 0.1 10 1 t 1 - rectangular pulse duration (s) z thjc - thermal impedance (c/w) 100 single pulse (themal resistance) d = 0.75 d = 0.50 d = 0.33 d = 0.25 d = 0.20 p dm t 1 t 2 notes: 1. duty factor d = t 1 /t 2 2. peak t j = p dm x z thjc + t c
www.vishay.com for technical questi ons, contact: diodes-tech@vishay.com document number: 93954 4 revision: 22-aug-08 20L15TS vishay high power products schottky rectifier, 20 a fig. 5 - maximum allowable case temperature vs. average forward current fig. 6 - forward powe r loss characteristics fig. 7 - maximum non-repetitive surge current fig. 8 - unclamped inductive test circuit 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 70 90 95 80 75 85 100 allowable case temperature (c) i f(av) - average forward current (a) 412 24 16 8 0 20 see note (1) square wave (d = 0.50) 0 2 4 6 10 12 8 14 average power loss (w) i f(av) - average forward current (a) 515 30 20 10 025 dc rms limit d = 0.20 d = 0.25 d = 0.33 d = 0.50 d = 0.75 100 1000 i fsm - non-repetitive surge current (a) t p - square wave pulse duration (s) 100 10 000 10 1000 at any rated load condition and with rated v rrm applied following surge current monitor high-speed switch d.u.t. r g = 25 + freewheel diode v d = 25 v l irfp460 40hfl40s02
document number: 93954 for technical ques tions, contact: diodes-tech@vishay.com www.vishay.com revision: 22-aug-08 5 20L15TS schottky rectifier, 20 a vishay high power products ordering information table 1 - current rating (20 a) 2 - l = low v f 3 - voltage rating (15 = 15 v) 4 - t = schottky series 5 - s = d 2 pak 6 - none = tube (50 pieces) trl = tape and reel (left oriented) trr = tape and reel (right oriented) 7 - none = standard production pbf = lead (pb)-free device code 5 13 24 67 20 l 15 t s trl - links to related documents dimensions http://www.vishay.com/doc?95014 part marking information http://www.vishay.com/doc?95008 packaging information http://www.vishay.com/doc?95032
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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