- 366 - uf1a thru uf1m 1.0 amp. glass passivated ultrafast plastic rectifiers voltage range 50 to 1000 volts current 1.0 ampere f eatures plastic package has underwriters laboratory flammability classification 94v-o ideally suited for use in very high frequency switching power supplies, inverters and as free wheeling diodes glass passivated chip junction excellent high temperature switching ultrafast recovery time for high efficiency soft recovery characteristics high temperature soldering guaranteed: 260 o c/10 seconds/.375?,(9.5mm) lead lengths at 5 lbs., (2.3kg) tension m echanical data case: jedec do-204al 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: 0.012 ounce, 0.34 gram do-204al (do-41) dimensions in inches and (millimeters) m aximum ratings and electrical characteristics rating at 25 ambient temperature unless otherwise specified. single phase, half wave, 60 hz, resistive or inductive load. for capacitive load, derate current by 20% type number symbol uf1a uf1b uf1d UF1G uf1j uf1k uf1m unit s 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 .375 (9.5mm) lead length @t a = 55 i (av) 1.0 a peak forward surge current, 8.3 ms single half sine-wave superimposed on rated load (jedec method ) i fsm 30 a maximum instantaneous forward voltage @ 1.0a v f 1.0 1.7 v maximum dc reverse current @ t a =25 at rated dc blocking voltage @ t a =100 i r 10.0 50.0 ua ua maximum reverse recovery time ( note 1 ) trr 50 75 ns typical junction capacitance ( note 2 ) cj 17.0 pf typical thermal resistance (note 3) r ja r jl 60.0 15.0 /w operating/storage temperature range t j, t stg -55 to + 150 notes: 1. reverse recovery test conditions: i f =0.5a, i r =1.0a, i rr =0.25a 2. measured at 1 mhz and applied reverse voltage of 4.0 v d.c. 3. thermal resistance from junction to ambient and from junction to lead length .375?(9.5mm), mounted on 0.2? x0.2? (5mm x 5mm) cu pads.
- 367 - ratings and characteristic curves (uf1a thru uf1m) fig.4- typical reverse characteristics instantaneous reverse current . (ma) 0 20 40 60 80 100 120 140 0.01 percent of rated peak reverse voltage. (%) fig.2- maximum non-repetitive peak forward surge current peak for ward surge current . (a) 1 10 100 0 number of cycles at 60hz fig.3- typical forward characteristics instantaneous for ward current . (a) 0.4 0.6 0.8 1.0 1.2 1.4 1.6 0.001 forward voltage. (v) fig.5- typical junction capacitance junction cap acitance.(pf) 0.1 1 10 100 1 10 100 reverse voltage. (v) tj=25 c f=1.0mhz vsig=50mvp-p 0 fig.1- maximum forward current derating curve average for ward current . (a) 40 60 80 100 120 160 140 0 0.5 lead temperature. ( c) o 5 10 15 20 25 30 tj=55 c 8.3ms single half sine wave jedec method 0 tj=125 c 0 uf1a-UF1G uf1j-uf1m tj=25 c o tj=100 c o tj=125 o c tj=100 c o 0.1 1 10 100 uf1j-uf1m uf1j-uf1m 1.8 2.0 5 1 0.1 0.01 1.0 resistive or inductive load 0.375"(9.5mm) lead length 20 tj=25 c o pulse width=300 s 1% duty cycle 10 200
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