jedec do-204ad, molded plastic body UG4A thru ug4d 50v-200v 4.0a web site: www.taychipst.com 1 of 2 features e-mail: sales@taychipst.com maximum ratings and electrical characteristics mechanical data plastic package has underwriters laboratories flammability classification 94v-0 ideally suited for use in very high frequency switching power supplies, inverters and as a free wheeling diode ultrafast recovery time for high efficiency soft recovery characteristics excellent high temperature switching glass passivated junction high temperature soldering guaranteed: 250c/10 seconds, 0.375" (9.5mm) lead length, 5 lbs. (2.3kg) tension case: over passivated chip terminals: axial leads, solderable per mil-std-750, method 2026 polarity: color band denotes cathode end mounting position: any weight: 0.012 ounce, 0.34 gram ultrafast efficient plastic rectifier ratings at 25c ambient temperature unless otherwise specified. symbols UG4A ug4b ug4c ug4d units maximum repetitive peak reverse voltage v rrm 50 100 150 200 volts maximum rms voltage v rms 35 70 105 140 volts maximum dc blocking voltage v dc 50 100 150 200 volts maximum average forward rectified current 0.375" (9.5mm) lead length at t l =75c i (av) 4.0 amps peak forward surge current 8.3 ms single half sine-wave superimposed i fsm 150.0 amps on rated load (jedec method) at t l =75c maximum instantaneous forward voltage at 4.0a v f 0.95 volts maximum dc reverse current t a =25c 5.0 at rated dc blocking voltage t a =100c i r 300.0 m a maximum reverse recovery time (note 1) t rr 20.0 ns maximum reverse recovery time t j =25c 30.0 (note 2) t j =100c t rr 50.0 ns maximum recovered stored charge t j =25c 15.0 (note 2) t j =100c q rr 30.0 nc typical junction capacitance (note 3) c j 20.0 pf typical thermal resistance (note 4) r q ja 25.0 c/w operating junction and storage temperature range t j , t stg -55 to +150 c notes : (1) reverse recovery test conditions: i f =0.5a, i r =1.0a, i rr =0.25a (2) t rr and q rr measured at tester: i f =4.0a, v r =30v, di/dt=50a/ m s, irr=10% i rm for measurement of t rr (3) measured at 1.0 mh z and applied reverse voltage of 4.0 volts (4) thermal resistance from junction to ambient at 0.375" (9.5mm) lead length
ratings and characteristic curves UG4A thru ug4d e-mail: sales@taychipst.com web site: www.taychipst.com 2 of 2 ultrafast efficient plastic rectifier 0 25 50 75 100 125 150 175 0 1.0 2.0 3.0 4.0 5.0 6.0 110100 10 100 200 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 0.01 0.1 1 10 100 0 25 50 75 100 125 150 175 0 10 20 30 40 50 60 0.1 1 10 100 1 10 100 1 0 20 40 60 80 100 0.01 0.1 1 10 100 1,000 fig. 1 - forward current derating curve temperature, c average forward rectified current, amperes fig. 2 - maximum non-repetitive peak forward surge current number of cycles at 60 h z peak forward surge current, amperes fig. 3 - typical instantaneous forward characteristics fig. 4 - typical reverse leakage characteristics instantaneous forward current, amperes instantaneous reverse leakage current, microamperes instantaneous forward voltage, volts percent of rated peak reverse voltage, % fig. 5 - reverse switching characteristics recovered stored charge/reverse recovery time, nc/ns junction temperature, c fig. 6 - typical junction capacitance junction capacitance, pf reverse voltage, volts t l =75 c 8.3ms single half sine-wave (jedec method) t j =100c t j =25c t j =25c pulse width=300 m s 1% duty cycle t j =25c f=1.0 mhz vsig=50mvp-p t a , ambient temperature p.c.b. mounted 0.5 x 0.5 (12 x 12mm) copper pads t j =100c di/dt= 20a/ m s di/dt= 150a/ m s di/dt= 50a/ m s di/dt=150a/ m s di/dt=20a/ m s di/dt=50a/ m s di/dt=100a/ m s t l , lead temperature 0.375" (9.5mm) lead length i f =4.0a v r =30v t rr q rr resistive or inductive load UG4A thru ug4d 50v-200v 4.0a
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