ug4a thru ug4d vishay semiconductors formerly general semiconductor document number 88763 www.vishay.com 15-feb-02 1 ultrafast plastic rectifier reverse voltage 50 to 200v forward current 4.0a maximum ratings & thermal characteristics ratings at 25? ambient temperature unless otherwise specified. symbols ug4a ug4b UG4C ug4d units maximum repetitive peak reverse voltage v rrm 50 100 150 200 v maximum rms voltage v rms 35 70 105 140 v maximum dc blocking voltage v dc 50 100 150 200 v maximum average forward rectified current at 0.375 i f(av) 4.0 a (9.5mm) lead length at t l = 75? peak forward surge current 8.3 ms single half sine-wave superimposed on rated load (jedec method) at t l = 75? i fsm 150 a typical thermal resistance (note 1) r ja 25 ?/w operating junction and storage temperature range t j , t stg -55 to +150? ? electrical characteristics ratings at 25? ambient temperature unless otherwise specified. symbols value units maximum instantaneous forward voltage at 4.0a (note 2) v f 0.95 v maximum dc reverse current t a = 25? i r 5.0 a at rated dc blocking voltage t a =100? 300 maximum reverse recovery time at i f =0.5a, i r =1.0a, i rr =0.25a t rr 20 ns maximum reverse recovery time at t j = 25? t rr 30 ns i f =4.0a, di/dt=50a/ s, v r =30v, i rr =10% i rm t j = 100? 50 maximum recovered stored charge t j = 25? 15 i f =4.0a, di/dt=50a/ s, v r =30v, i rr =10% i rm t j = 100? q rr 30 nc typical junction capacitance at 4v, 1mhz c j 20 pf notes: (1) thermal resistance from junction to ambient at 0.375 (9.5mm) lead length (2) pulse test: 300 s pulse width, 1% duty cycle dimensions in inches and (millimeters) features ?plastic package has underwriters laboratories flammability classification 94v-0 ?ideally suited for use in very high frequency switching power supplies, inverters and as free wheeling diodes ?ultrafast recovery time for high efficiency ?excellent high temperature switching ?soft recovery characteristics ?glass passivated junction ?high temperature soldering guaranteed: 250?/10 seconds, 0.375" (9.5mm) lead length, 5 lbs. (2.3kg) tension mechanical data case: jedec do-201ad molded plastic body over passivated chip terminals: plated axial leads, solderable per mil-std-750, method 2026 polarity: color band denotes cathode end mounting position: any weight: 0.045 oz., 1.2 g 0.210 (5.3) 0.190 (4.8) dia. 0.052 (1.32) 0.048 (1.22) dia. 1.0 (25.4) min. 0.375 (9.5) 0.285 (7.2) 1.0 (25.4) min. do-201ad
ug4a thru ug4d vishay semiconductors formerly general semiconductor www.vishay.com document number 88763 2 15-feb-02 ratings and characteristic curves (t a = 25 c unless otherwise noted) temperature ( c) fig. 1 ?forward current derating curves average forward rectified current (a) fig. 3 ?typical instantaneous forward characteristics instantaneous forward voltage (v) instantaneous forward current (a) percent of rated peak reverse voltage (%) instantaneous reverse leakage current ( a) fig. 4 ?typical reverse leakage characteristics fig. 6 ?typical junction capacitance number of cycles at 60 h z reverse voltage (v) fig. 2 ?maximum non-repetitive peak forward surge current peak forward surge current (a) junction temperature ( c) recovered stored charge / reverse recovery time, nc/ns junction capacitance, pf fig. 5 ?reverse switching characteristics 0.1 1 10 100 1 10 100 t j = 25 c f = 1.0mh z vsig = 50mvp-p 0 25 50 75 100 125 150 175 0 1.0 2.0 3.0 4.0 5.0 6.0 resistive or inductive load 0.375" (9.5mm) lead length t l lead temperature t a , ambient temperature p.c.b. mounted 0.5" x 0.5" (12 x 12mm) copper pads 1 10 100 10 100 200 1 t l = 75 c 8.3ms single half sine-wave (jedec method) 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 0.01 0.1 1 10 100 t j = 100 c pulse width = 300 s 1% duty cycle t j = 25 c 0 20 40 60 80 100 0.01 0.1 1 10 100 1,000 t j = 100 c t j = 25 c 0 25 50 75 100 125 150 175 0 10 20 30 40 50 60 i f = 4.0a v r =30v t rr q rr di/dt=100a/ s di/dt=100a/ s di/dt=20a/ s di/dt=50a/ s di/dt=150a/ s di/dt=150a/ s di/dt=20a/ s di/dt=50a/ s
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