- 82 - SRAF820 thru sraf860 isolation 8.0 amps. schottky barrier rectifiers voltage range 20 to 60 volts current 8.0 amperes features low forward voltage drop high current capability high reliability high surge current capability mechanical data cases: ito-220ac molded plastic epoxy: ul 94v-o rate flame retardant terminals: leads solderable per mil-std-202, method 208 guaranteed polarity: as marked high temperature soldering guaranteed: 260 o c/10 seconds/.25?,(6.35mm) from case. weight: 2.24 grams ito-220ac dimensions in inches and (millimeters) maximum 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 sraf 820 sraf 830 sraf 84 0 sraf 850 sra 860 units maximum recurrent peak reverse voltage v rrm 20 30 40 50 60 v maximum rms voltage v rms 14 21 28 35 42 v maximum dc blocking voltage v dc 20 30 40 50 60 v maximum average forward rectified current see fig. 1 i (av) 8.0 a peak forward surge current, 8.3 ms single half sine-wave superimposed on rated load (jedec method ) i fsm 150 a m aximum i nstantaneous f orward v oltage @8.0a v f 0.55 0.70 v maximum d.c. reverse current @ tc=25 at rated dc blocking voltage @ tc=100 i r 0.5 50 ma ma typical thermal resistance (note 1) r jc 5.0 /w typical junction capacitance (note 2) cj 430 360 pf operating junction temperature range t j -65 to +125 -65 to +150 storage temperature range t stg -65 to +150 notes: 1. thermal resistance from junction to case per leg with heat sink (2?x3?x0.25?) al-plate. 2. measured at 1mhz and applied reverse voltage of 4.0v d.c. .071(1.8) max .161(4.1) .146(3.7) .118(3.00) .124(3.16) .185(4.7) .173(4.4) .272(6.9) .248(6.3) .063(1.6) max .100(2.55) .543(13.8) .512(13.2) .100(2.55) .110(2.8) .098(2.5) .606(15.5) .583(14.8) .112(2.85) .100(2.55) .406(10.3) .390(9.90) .134(3.4)dia .113(3.0)dia 2 pin 1 pin 2 case positive
-83- ratings and characteristic curves (SRAF820 thru sr 860) af fig.3- maximum non-repetitive forward surge current peak for ward surge current . (a) 1 2 5 10 20 100 50 25 50 125 100 150 175 number of cycles at 60hz 8.3ms single half sine wave jedec method fig.5- typical forward characteristics instantaneous for ward current . (a) .1 .2 .3 .4 .5 .6 .7 .8 .9 0.1 1.0 10 50 forward voltage. (v) sraf850-60 SRAF820-40 fig.4- typical junction capacitance junction cap acitance.(pf) .1 .4 1.0 4 10 40 100 100 200 400 600 1000 800 2000 4000 reverse voltage. (v) tj=25 c 0 sraf850-60 SRAF820-40 fig.1- maximum forward current derating curve average for ward current . (a) 0 50 100 150 0 2 4 6 8 10 case temperature. ( c) o sraf850-60 sr 820-40 af fig.2- typical reverse characteristics instantaneous reverse current . (ma) 20 40 60 80 100 120 .001 .01 .10 1.0 10 percent of rated peak reverse voltage. (%) t j= 1 2 5 c 0 tj=25 c 0 tj=75 c 0 tj=25 c pulse width=300 s 1% duty cycle o
|
