document number: 94227 for technical ques tions, contact: diodes-tech@vishay.com www.vishay.com revision: 12-sep-08 1 schottky rectifier, 2 x 20 a 47CTQ020PBF vishay high power products features ? 150 c t j operation ? center tap configuration ? optimized for 3.3 v application ? ultralow forward voltage drop ? high frequency operation ? guard ring for enhanced ruggedness and long term reliability ? high purity, high temperature epoxy encapsulation for enhanced mechanical strength and moisture resistance ? lead (pb)-free (?pbf? suffix) ? designed and qualified for industrial level description this center tap schottky rectifier has been optimized for ultralow forward voltage drop specifically for 3.3 v output power supplies. the proprietary barrier technology allows for reliable operation up to 150 c junction temperature. typical applications are in switching power supplies, converters, reverse battery protection, and redundant power subsystems. product summary i f(av) 2 x 20 a v r 20 v i rm 310 ma at 125 c to-220ab anode 13 2 base common cathode 2 common cathode anode a v aila b le rohs* compliant major ratings and characteristics symbol characteristics values units i f(av) rectangular waveform 40 a v rrm 20 v i fsm t p = 5 s sine 1000 a v f 20 apk, t j = 125 c 0.34 v t j - 55 to 150 c voltage ratings parameter symbol test conditions 47CTQ020PBF units maximum dc reverse voltage v r 125 c 20 v 150 c 10 absolute maximum ratings parameter symbol test conditions values units maximum average forward current per leg i f(av) 50 % duty cycle at t c = 135 c, rectangular waveform 20 a per device 40 maximum peak one c ycle non-repetitive surge current per leg i fsm 5 s sine or 3 s rect. pulse following any rated load condition and with rated v rrm applied 1000 10 ms sine or 6 ms rect. pulse 250 non-repetitive aval anche energy per leg e as t j = 25 c, i as = 3 a, l = 3 mh 18 mj repetitive avalanche current per leg i ar current decaying linearly to zero in 1 s frequency limited by t j maximum v a = 1.5 x v r typical 3a * pb containing terminations are not rohs compliant, exemptions may apply
www.vishay.com for technical questi ons, contact: diodes-tech@vishay.com document number: 94227 2 revision: 12-sep-08 47CTQ020PBF vishay high power products schottky rectifier, 2 x 20 a note (1) pulse width < 300 s, duty cycle < 2 % electrical specifications parameter symbol test conditions values units maximum forward voltage drop per leg v fm (1) 20 a t j = 25 c 0.45 v 40 a 0.51 20 a t j = 125 c 0.34 40 a 0.44 20 a t j = 150 c 0.31 40 a 0.42 maximum reverse leakage current per leg i rm (1) t j = 125 c v r = 5 v 60 ma v r = 3.3 v 45 t j = 150 c v r = 10 v 306 t j = 25 c v r = rated v r 3 t j = 125 c 310 threshold voltage v f(to) t j = t j maximum 0.188 v forward slope resistance r t 5.9 m maximum junction capacitance per leg c t v r = 5 v dc (test signal range 100 khz to 1 mhz) 25 c 3000 pf typical series inductance per leg l s measured lead to lead 5 mm from package body 5.5 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 per leg r thjc dc operation 1.5 c/w maximum thermal resistance, junction to case per package 0.75 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 to-220ab 47ctq020
document number: 94227 for technical ques tions, contact: diodes-tech@vishay.com www.vishay.com revision: 12-sep-08 3 47CTQ020PBF schottky rectifier, 2 x 20 a vishay high power products fig. 1 - maximum forward voltage drop characteristics (per leg) fig. 2 - typical values of reverse current vs. reverse voltage (per leg) fig. 3 - typical junction capacit ance vs. reverse voltage (per leg) fig. 4 - maximum thermal impedance z thjc characteristics (per leg) 1 10 0. 8 1.2 v fm - forward voltage drop (v) i f - instantaneous forward current (a) 100 0.4 0 0.2 0.6 1.0 1.4 1000 t j = 150 c t j = 125 c t j = 25 c 0.1 1 10 100 0.01 0 v r - reverse voltage (v) i r - reverse current (ma) 16 20 1000 8 412 t j = 150 c t j = 25 c t j = 50 c t j = 100 c t j = 125 c t j = 75 c 10 000 0610 v r - reverse voltage (v) c t - junction capacitance (pf) 2 1000 4 14 1 8 22 t j = 25 c 8 12 16 20 0.1 1 10 0.00001 0.0001 0.001 0.01 0.1 t 1 - rectangular pulse duration (s) z thjc - thermal impedance (c/w) single p u lse (thermal resistance) 1 d = 0.75 d = 0.50 d = 0.33 d = 0.25 d = 0.20 100 0.01 n otes: 1. d u ty factor d = t 1 /t 2 2. peak t j = p dm x z thjc + t c p dm t 1 t 2 10
www.vishay.com for technical questi ons, contact: diodes-tech@vishay.com document number: 94227 4 revision: 12-sep-08 47CTQ020PBF vishay high power products schottky rectifier, 2 x 20 a fig. 5 - maximum allowable case temperature vs. average forward current (per leg) fig. 6 - forward power loss characteristics (per leg) fig. 7 - maximum non-repetitive surge current (per leg) 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 = 10 v 100 030 i f(av) - average forward current (a) allowable case temperature (c) 120 140 160 110 130 20 15 10 5 see note (1) 25 dc 150 90 s qu are w a v e (d = 0.50) 10 v applied 0 025 12 average power loss (w) i f(av) - average forward current (a) 5101520 d = 0.20 d = 0.25 d = 0.33 d = 0.50 d = 0.75 30 4 8 10 6 2 rms limit dc 100 1000 t p - square wave pulse duration (s) i fsm - non-repetitive surge current (a) 100 10 000 10 1000 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: 94227 for technical ques tions, contact: diodes-tech@vishay.com www.vishay.com revision: 12-sep-08 5 47CTQ020PBF schottky rectifier, 2 x 20 a vishay high power products ordering information table 1 - current rating (40 a) 2 - circuit configuration: c = common cathode 3 - package: t = to-220 4 - schottky ?q? series 5 - voltage rating (020 = 20 v) 6 - none = standard production pbf = lead (pb)-free tube standard pack quantity: 50 pieces device code 5 13 24 6 47 c t q 020 pbf links to related documents dimensions http://www.vishay.com/doc?95222 part marking information http://www.vishay.com/doc?95225
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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