document number: 94168 for technical questions, contact: diodestech@vishay.com www.vishay.com revision: 12-mar-10 1 schottky rectifier, 20 a vs-20tq035spbf, vs-20tq040spbf, vs-20tq045spbf vishay high power products features ? 150 c t j operation ? low forward voltage drop ? high frequency operation ? high purity, high temperature epoxy encapsulation for enhanced mechanical strength and moisture resistance ? guard ring for enhanced ruggedness and long term reliability ? meets msl level 1, per j-std-020, lf maximum peak of 260 c ? halogen-free according to iec 61249-2-21 definition ? compliant to rohs directive 2002/95/ec ? aec-q101 qualified description the vs-20tq... schottky rectifie r 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, freewheeling diodes, and re verse battery protection. product summary i f(av) 20 a v r 35 v to 45 v ba s e cathode 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 range 35 to 45 v i fsm t p = 5 s sine 1800 a v f 20 apk, t j = 125 c 0.51 v t j range - 55 to 150 c voltage ratings parameter symbol vs-20tq035spbf vs-20tq040spbf vs-20tq045spbf units maximum dc reverse voltage v r 35 40 45 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 = 116 c, rectangular waveform 20 a maximum peak one cycle 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 1800 10 ms sine or 6 ms rect. pulse 400 non-repetitive avalanche energy e as t j = 25 c, i as = 4 a, l = 3.40 mh 27 mj repetitive avalanche current i ar current decaying linear ly to zero in 1 s frequency limited by t j maximum v a = 1.5 x v r typical 4a
www.vishay.com for technical questions, contact: diodestech@vishay.com document number: 94168 2 revision: 12-mar-10 vs-20tq035spbf, vs-20tq040spbf, vs-20tq045spbf vishay high power products schottky rectifier, 20 a note (1) pulse width < 300 s, duty cycle < 2 % electrical specifications parameter symbol test conditions values units maximum forward voltage drop see fig. 1 v fm (1) 20 a t j = 25 c 0.57 v 40 a 0.73 20 a t j = 125 c 0.51 40 a 0.67 maximum reverse leakage current see fig. 2 i rm (1) t j = 25 c v r = rated v r 2.7 ma t j = 125 c 105 maximum junction capacitance c t v r = 5 v dc (test signal range 100 khz to 1 mhz), 25 c 1400 pf typical series inductance l s measured lead to lead 5 mm from package body 8.0 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 150 c maximum thermal resistance, junction to case r thjc dc operation see fig. 4 1.50 c/w typical thermal resistance, case to heatsink r thcs mounting surface, smooth and greased 0.50 approximate weight 2g 0.07 oz. mounting torque minimum 6 (5) kgf ? cm (lbf ? in) maximum 12 (10) marking device case style d 2 pak 20tq045s
document number: 94168 for technical questions, contact: diodestech@vishay.com www.vishay.com revision: 12-mar-10 3 vs-20tq035spbf, vs-20tq040spbf, vs-20tq045spbf schottky rectifier, 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 0.1 10 100 1 1000 i f - instantaneous forward current (a) v fm - forward voltage drop (v) 0.2 0.6 1.2 1.6 1. 8 1.4 0. 8 0.4 0 1.0 t j = 150 c t j = 125 c t j = 25 c 0.001 1 100 10 0.1 0.01 1000 i r - reverse current (ma) v r - reverse voltage (v) 515 30 40 45 35 20 10 0 25 t j = 125 c t j = 150 c t j = 100 c t j = 75 c t j = 50 c t j = 25 c 100 10 000 c t - junction capacitance (pf) v r - reverse voltage (v) 10 20 30 40 0 50 t j = 25 c 0.001 0.1 0.01 1 10 0.00001 0.0001 0.001 0.01 0.1 1 t 1 - rectangular pulse duration (s) z thjc - thermal impedance (c/w) 10 100 single p u lse (thermal resistance) d = 0.50 d = 0.33 d = 0.25 d = 0.17 d = 0.0 8 p dm t 1 t 2 n otes: 1. d u ty factor d = t 1 /t 2 2. peak t j = p dm x z thjc + t c
www.vishay.com for technical questions, contact: diodestech@vishay.com document number: 94168 4 revision: 12-mar-10 vs-20tq035spbf, vs-20tq040spbf, vs-20tq045spbf vishay high power products schottky rectifier, 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 fig. 8 - unclamped in ductive test circuit 115 145 135 125 155 allowable case temperature (c) i f(av) - average forward current (a) 52025 30 10 0 15 20tq r thjc (dc) = 1.50 c/w dc 0 8 6 4 2 1 8 16 14 12 10 average power loss (w) i f(av) - average forward current (a) 515 30 20 10 025 d = 0.0 8 d = 0.17 d = 0.25 d = 0.33 d = 0.50 rms limit dc 100 1000 10 000 i fsm - non-repetitive surge current (a) t p - square wave pulse duration (s) 100 10 000 1000 10 at any rated load condition and w ith rated v rrm applied follo w ing s u rge c u rrent monitor high-speed s w itch d.u.t. r g = 25 + free w heel diode v d = 25 v l irfp460 40hfl40s02
document number: 94168 for technical questions, contact: diodestech@vishay.com www.vishay.com revision: 12-mar-10 5 vs-20tq035spbf, vs-20tq040spbf, vs-20tq045spbf schottky rectifier, 20 a vishay high power products ordering information table 035 = 35 v 040 = 40 v 045 = 45 v 2 - current rating (20 a) 3 - package: t = to-220 4 - schottky ?q? series 5 - voltage ratings - s = d 2 pak 6 7 - none = tube (50 pieces) trl = tape and reel (left oriented) trr = tape and reel (right oriented) - pbf = lead (pb)-free 8 1 - hpp prod u ct s u ffix device code 5 1 3 24 678 vs- 20 t q 045 s trl pbf links to related documents dimensions www.vishay.com/doc?95014 part marking information www.vishay.com/doc?95008 packaging information 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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