features low cost diffused junction ultra fast switching for high efficiency low reverse leakage current low forward voltage drop high current capability the plastic material carries ul recognition 94v-0 mechanical data case molded plastic polarity:color band denotes cathode weight: 0.007 ounces,0.21 grams mounting position: any dimensions in inches and (millimeters) maximum ratings and electrical characteristics rating at 25 ambient temperature unless otherwise specified. single phase, half wave ,60hz, resistive or inductive load. for capacitive load, derate current by 20% characteristics symbol UF3A uf3b uf3d uf3g uf3j uf3k uf3m unit maximum recurrent peak reverse voltage v rrm 50 100 200 400 600 800 1000 v maximum rms voltage v rms 35 70 140 280 420 560 700 v maximum dc blocking voltage v dc 50 100 200 400 600 800 1000 v maximum average forward rectified current @t a =55 peak forward surage current 8.3ms single half sine-wave super imposed on rated load(jedec method) peak forward voltage at 3.0a dc(note1) v f 1.3 v maximum dc reverse current @t j =25 at rated dc blocking voltage @t j =100 maximum reverse recovery time(note 1) t rr ns typical junction capacitance (note2) c j pf typical thermal resistance (note3) r ja /w operating temperature range t j storage temperature range t stg a 150 ~ 89 ~ 2.measured at 1.0 mhz and applied reverse voltage of 4.0v dc 3.thermal resistance junction to ambient notes: 1.measured with i f =0.5a i r =1a i rr =0.25a 100 i r i (av) UF3A thru uf3m reverse voltage - 50 to 1000 volts forward current - 3.0 amperes surface mount glass ultra fast rectifiers 5.0 3.0 ua -50 to +150 50 75 50 30 20 -50 to +150 i fsm a 1.0 1.7 .108(2.75) .128(3.25) .245(6.22) .220(5.59) .280(7.11) .260(6.60) .012(.305) .006(.152) .002(.051) .008(.203) .320(8.13) .305(7.75) .079(2.00) .103(2.62) .060(1.52) .030(0.76) smc
rating and charactertic curves UF3A thru uf3m ~ 90 ~ fig. 1 C forward current derating curve ambient temperature ( ) a v e r a g e f o r w a r d c u r r e n t a m p e r e s 1.0 0 25 2.0 3.0 50 75 100 125 150 175 0.5 1.5 2.5 single phase half wave 60hz resistive or inductive load fig. 2 C maximum non-repetitive surge current number of cycles at 60hz p e a k f o r w a r d s u r g e c u r r e n t ( a m p e r e s single half-sine-wave (jedec method) 200 150 100 50 0 100 50 20 10 1 2 5 fig.3 C typical junction capacitance c a p a c i t a n c e ( p f ) reverse voltage (volts) 1000 100 1 10 100 10 0.1 1.0 tj = 25 c f = 1 mhz UF3A -uf3g uf3j -uf3m fig.4-typical forward characteristics i n s t a n t a n e o u s f o r w a r d c u r r e n t ( a m p e r e s ) instantaneous forward voltage (volts) tj = 25 c pulse width 300us uf3j -uf3m UF3A -uf3d uf 3g 1.0 10 0.1 100 0 0.2 0.4 0.6 0.8 1.2 1.6 1.4 1.0 1.8
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