POWER SCHOTTKY RECTIFIERS UgD935 32A Pk, up to 50V Usbodo I USD950 FEATURES DESCRIPTION Very Low Forward Voltage (0.5V max @ 16A) The USD900 series of Schottky barrier @ Reverse Transient Capability power rectifiers is ideally suited for Econcmical Convenient Plastic Package output rectifiers and catch diodes in *# Mechanically Rugged low voltage power supplies. @ 50V Blocking Voltage @ Rated Timax ABSOLUTE MAXIMUM RATINGS USD935 usps40 UsSDe45 USD950 Working Peak Reverse Voltage, Vawa .........-0.0cccccccecccccrececesacecues io) MOV eee eee ABV cies eeeees 50V.. DC Blocking Voltage, Va ..... 2. cece cece cece ce cucuctcucecvsncuenetcucnensucns BBV Lecce ADV. eee ABV cee 5oV.. Peak Repetitive Surge Voltage, Vasm @ tam ...-.s.ecccceccecevcucceceuceerucs AV acc e ee ceee ABV ceca SAV cece seeeee 60V.. Average Rectified Forward Current @ Te = LISC, lo. ee cece ccc c cece cece cece eee e ets t cece cease LGA Lol eee cece eee ees Peak Repetitive Forward Current (Rated Vp, Square Wave, 20KHz, 50% Duty Cycle, @ Tc = 115C), Icam...--eecccccceccecccucceucccecccuucees B2A occ eect e cer eens eee Non-repetitive Peak Surge Current (8.3MS), Irsu ..- 0. esc c ance cece ees cccceeeeceuantratanneveseuens 250A vec cecteene ease vesevace Peak Reverse Transient Current, laa oo... cc ccc c cence eee e eee e ee cece cee cveceneeeuveceunvevtsneenns Operating Junction Temperature, Tj... 0.0.0... cece cee cece cette nscuuaueeesaeseetevereneunessrcece Storage Temperature Range, Tsig ......ccceccceu cee eccescracseuceaucteuescrecaneeene Thermal Resistance, Junction to Case, R y ELECTRICAL CHARACTERISTICS (Tcase = 25C) CHARACTERISTIC SYMBOL LIMIT UNITS CONDITIONS Maximum Instantaneous in 20 mA Ve = Vawes Reverse Current Pulse Width = 400.8 Duty Cycle = 1 percent Typical Instantaneous in 50 mA Ve = Vawm Reverse Current Pulse Width = 400,S Duty Cycle = 1 percent Te = 125C Maximum Instantaneous 0.6 Vv ip = 16A Forward Voltage 0.53 v ip =16A Te = 125C Capacitance Cr 2000 pF Va = 5V Valtage Rate of Change dv/dt 1000 V/pS Ve = Vawa MECHANICAL SPECIFICATIONS SEATING USD900 SERIES TO-220AC Ss B+| - a _ \ a | I \ ii 4 { LO bl Poly el SECT Aa 4 PIN 1. Cathode | rr 2. Anode wfjey Tab is connected -4 to Cathode. Microsemi Corp. Watertown 4/82 2-117 The diode expertsUSD935 USD940 USD945 USD950 Typical Forward Current Typicai Reverse Current 100 vs. Forward Voltage vs. Voltage z = E = 5 Z = = 5 = a Qo ny a 2 g s z Fg S | ac = | 0 10 20 30 40 50 60 70 80 90 100 110120 130 5% of Va W) 00 O01 02 03 04 05 06 07 08 09 10 Ve VOLTAGE (V) Output Current vs. Temperature Y, Rating vs. Temperature 100% N waa] Vawe a Ve Va Zz INFINITE HEATSINK 5 \ \ with Vaws = RATED a t z {T, reference) 8 \ 1 5 Z 33 \ \ 5 ge \ 2 5 50% t = = 5 FREE AIR Be Te= \ 5 (7, reference) - Taer-oce o Q Va =0 KE A\ t Vawn = RATED a v ~ w a 0 25 50 75 100 125 150 -50 -25 0 25 50 75 100 125 150 175 TEMPERATURE (C) TEMPERATURE (C) 580 PLEASANT STREET WATERTOWN, MA 02172 TEL. (617) 926-0404 FAX (617) 924-1235 2-118 PRINTED IN U.S.A