3.0a axial leaded super- fast rectifiers / 31df4-31DF6 1 of 2 features do-201ad dim min max a 25.40 b 7.20 9.50 c 1.20 1.30 d 4.80 5.30 all dimensions in mm a a b c d maximum ratings and electrical characteristics @ t a = 25 c unless otherwise specified mechanical data single phase, half wave, 60hz, resistive or inductive load. for capacitive load, derate current by 20%. low forward voltage drop low power loss, high efficiency high current capability high reliability high surge current capability case: molded plastic epoxy: ul 94v-o rate flame retardant lead: axial leads, solderable per mil- std-202, method 208 guaranteed polarity: color band denotes cathode end high temperature soldering guaranteed: o c/10 seconds/.375?,(9.5mm) lead weight: 1.2 grams 260 lengths at 5 lbs., (2.3kg) tension type number symbol 31df4 31DF6 unit s maximum recurrent peak reverse voltage v rrm 400 600 v maximum rms voltage v rms 280 420 v maximum dc blocking voltage v dc 400 600 v maximum average forward rectified current .375 (9.5mm) lead length @t a = 29 (note 1) @t l = 109 i (av) 1.2 3.0 a peak forward surge current, 8.3 ms single half sine-wave superimposed on rated load (jedec method ) i fsm 45 a maximum instantaneous forward voltage @ 3.0a v f 1.7 v maximum dc reverse current @ t a =25 at rated dc blocking voltage i r 20 ua maximum reverse recovery time (note 3) trr 35 ns typical thermal resistance (note 2) r ja 80 operating temperature range t j -40 to +150 storage temperature range t stg -40 to +150 notes: 1. without fin or p.c.board.. 2. thermal resistance from junction to ambient .375?(9.5mm) lead length. 3. reverse recovery test conditions: i f =0.5a, i r =1.0a, i rr =0.25a w
fig.1- maximum forward current derating curve ratings and characteristic curves (31df4 thru 31DF6) fig.3- typical forward characteristics single phase half wave 50 hz inductive load 0.375" (9.5mm) lead length average for ward rectified current amperes lead temperature. ( c) o 0 0 25 50 75 100 125 150 175 1 2 3 4 fig.2- maximum non-repetitive forward surge current tj=25 c 0 8.3ms single half sine wave jedec method 1 10 5 10 50 100 50 100 200 peak for ward surge current . (a) number of cycles at 60 hz tj=25 c pulse width=300 s 1% duty cycle o instantaneous for ward current . (a) forward voltage. (v) 1.4 1.6 1.8 2.0 2.1 0.01 0.03 0.1 0.3 1 3 10 30 100 1.5 1.7 1.9 40 30 20 20 2 3 30 80 8 2of2
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