uf201 thru uf207 ultra fast recovery silicon rectifier reverse voltage - 50 to 1000 volts forward current - 2.0 ampere the plastic package carries underwriters laboratory flammability classification 94v-0 ultra fast switching for high ef ficiency low reverse leakage high forward surge current capability high temperature soldering guaranteed: 250 c/10 seconds,0.375 ? (9.5mm) lead length, 5 lbs. (2.3kg) tension fea tures mechanical data maximum ra tings and electrical characteristics 50 35 50 100 70 100 200 140 200 400 280 400 600 420 600 800 560 800 v v v symbols units a a v v rrm v rms v dc i (a v) i fsm v f 2.0 60.0 operating junction and storage temperature range maximum repetitive peak reverse voltage maximum rms voltage maximum dc blocking voltage maximum average forward rectified current 0.375 ? (9.5mm) lead length at t a =50 c peak forward surge current 8.3ms single half sine-wave superimposed on rated load (jedec method) maximum instantaneous forward voltage at 2.0a maximum dc reverse current t a =25 c at rated dc blocking voltage t a =100 c i r 5.0 100.0 c j t j , t stg 50.0 50 -65 to +150 pf c t ypical thermal resistance (note 3) c/w t ypical junction capacitance (note 2) maximum reverse recovery time (note 1) t rr 50 75 ns uf 201 1000 700 1000 ratings at 25 c ambient temperature unless otherwise specified. single phase half-wave 60hz,resistive or inductive load,for capacitive load current derate by 20%. 1.0 1.70 note: 1.reverse recovery condition i f =0.5a,i r =1.0a,irr=0.25a 2.measured at 1mhz and applied reverse voltage of 4.0v d.c. 3.thermal resistance from junction to ambient at 0.375 ? (9.5mm)lead length,p .c.b. mounted uf 202 uf 203 uf 204 uf 205 uf 206 uf 207 1.30 characteristic dimensions in inches and (millimeters) do-15 0.140(3.6) 0.104(2.6) dia. 0.034(0.9) 0.028(0.7) dia. 1.0 (25.4) min. 0.300(7.6) 0.230(5.8) 1.0 (25.4) min. case : jedec do-15 molded plastic body t erminals : plated axial leads, solderable per mil-std-750, method 2026 polarity : color band denotes cathode end mounting position : any w eight :0.014 ounce, 0.40 grams 30 a r j a
uf201 thru uf207 ra tings and characteristic cur ves 0 0.4 0.8 1.2 1.6 2 . 0 25 50 75 100 125 150 175 200 ) a ( t n e r r u c d e i f i t c e r d w f e g a r e v a , i ) v a ( t , ambient tempera ture ( c) a fi g . 1 forward current deratin g curve single phase half-wave 60 hz resistive or inductive load 0.01 0.1 1.0 10 0.6 0.8 1.0 1.2 1.4 ) a ( t n e r r u c d r a w r o f s u o e n a t n a t s n i , i f v , inst ant aneous for wa rd voltage (v) f fi g .2 t y pical forward characteristics uf201 - uf203 uf205 - uf207 uf204 ) a ( t n e r r u c e g r u s d r a w r o f k a e p , i m s f 0 20 40 60 1 10 100 number of cycles a t 60hz fi g . 3 peak forward sur g e current 50v dc approx oscilloscope (note 1) pulse generator (note 2) device under t est t r r set t ime base for 50/100 ns/cm +0.5a 0a -0.25a -1.0a fi g . 5 reverse recover y t i me characteristic and t est circuit (+) (+) (-) (-) 1 10 100 1 10 100 ) f p ( e c n a t i c a p a c , c j v , reverse voltage (v) r fi g .4 t y pical junction cap acita nce t = 25 c j f = 1.0mhz
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