- 360 - MR850 thru mr858 3.0 amps. fast recovery rectifiers voltage range 50 to 800 volts current 3.0 amperes features low forward voltage drop high current capability high reliability high surge curr ent capability mechanical data cases: molded plastic epoxy: ul 94v-0 rate flame retardant lead: axial leads, solderable per mil- std-202, method 208 guaranteed polarity: color band denotes cathode end high temperature soldering guaranteed: 260 /10 seconds/.375?,(9.5mm) lead lengths at 5 lbs.,(2.3kg) tension weight: 1.2 grams do-201ad dimensions in inches and (millimeters) maximum ratings and el ectrical 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 mr 850 mr 851 mr 852 mr 854 mr 856 mr 858 units maximum recurrent peak reverse voltage v rrm 50 100 200 400 600 800 v maximum rms voltage v rms 35 70 140 280 420 560 v maximum dc blocking voltage v dc 50 100 200 400 600 800 v maximum average forward rectified current .375?(9.5mm) lead length @t a = 55 i (av) 3.0 a peak forward surge current, 8.3 ms single half sine-wave superimposed on rated load (jedec method ) i fsm 150 a maximum instantaneous forward voltage @ 3.0a v f 1.25 1.3 v maximum dc reverse current @ t a =25 at rated dc blocking voltage @ t a =100 i r 10 200 ua ua maximum reverse recovery time ( note 1 ) trr 100 150 ns typical junction capacitance ( note 2 ) cj 60 pf typical thermal resistance ( note 3 ) r ja 45 o c/w operating temperature range t j -65 to +150 storage temperature range t stg -65 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 volts d.c. 3. mount on cu-pad size 16mm x 16mm on p.c.b.
- 361 - fig.5- reverse recovery time characteristic and test circuit diagram 50 noninductive non inductive oscilloscope (note 1) pulse generator (note 2) dut (+) 50vdc (approx) (-) notes: 1. rise time=7ns max. input impedance= 1 megohm 22pf 2. rise time=10ns max. sourse impedance= 50 ohms (-) (+) 10 noninductive -1.0a -0.25a 0 +0.5a trr 1cm set time base for 5/ 10ns/ cm ratings and characteristic curves (MR850 thru mr858) fig.3- typical forward characteristics instantaneous for ward current . (a) 1.6 1.8 0.4 0.6 0.8 1.0 1.2 1.4 .03 0.1 0.3 1.0 10 20 3.0 .01 forward voltage. (v) tj=25 c pulse width=300 s 1% duty cycle o fig.4- typical junction capacitance junction cap acitance.(pf) 1 2 4 6 10 100 60 40 20 20 0 40 60 90 80 reverse voltage. (v) tj=25 c 0 fig.2- maximum non-repetitive peak surge current peak for ward surge current . (a) 10 5 1 50 100 100 150 50 10 number of cycles at 60hz 8.3ms single half sine wave jedec method tj=25 c 0 fig.1- maximum forward current derating curve average for ward current amperes 25 0 50 75 100 125 150 175 2 0 1 3 4 ambient temperature. ( c) o single phase half wave 60hz resistive or inductive load 0.375"(9.5mm) lead length m r 856-858 MR850-854
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