features low leakage low forward voltage drop high current capability high forward surge current capability mechanical data case: transfer molded plastic technology: vcauum soldered polarity: color ring denotes cathode lead: plated lead, solderable per mil-std-202e method 208c mounting position: any weigth: ar 1.80 grams, ars 1.60 grams maximum ratings and electrical charactristics rating at 25 o c ambient temperature unless otherwise specified single phase, half wave, 60hz, resistive or inductive load for capacitive load derate current by 20% parameters symbols ar251 ars251 ar252 ars252 ar253 ars253 ar254 ars254 ar256 ARS256 units maximum repetitive peak reverse voltage v rrm 100 200 300 400 600 volts maximum rm s voltage v rms 70 140 210 280 420 volts maximum dc blocking voltage v dc 100 200 300 400 600 volts maximum average rectified forward current at t c =110 o c i o 25 amps peak forward surge current 8.3ms single half sine-wave superimposed on rated load (je dec method) i fsm 400 amps rating for fusing(t<8.3ms) i 2 t 664 a 2 s maximum instantaneous forward voltage drop at 100a v f 1.1 volts maximum dc reverse current t a =25 o c i r 5.0 ua at rated dc blocking voltage t a =150 o c 450 typical thermal resistance r jc 1.0 o c/w operating and storage temperature t j ,t stg -65 to +175 o c notes: 1.enough heatsink must be considered in application. ar251/ars251 thru ar256/ARS256 button diodes voltage range 100 to 600 volts current 25amps dimensions in inches and millimeters .185 ( 4.7 ) .165 ( 4.2 ) .225 ( 5.7 ) .215 ( 5.5 ) .250 ( 6.4 ) .235 ( 6.0 ) .410 ( 10.4 ) .380( 9.7) dia dia .185 ( 4.7 ) .165 ( 4.2 ) .225 ( 5.7 ) .215 ( 5.5 ) .250 ( 6.4 ) .235 ( 6.0 ) .346 ( 8.8 ) .327(8.2) dia dia ar a rs ki semiconductor ki semiconductor
ar251 thru ar256 ars251 thru ARS256 ratings and characteristic curves ki semiconductor
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