r-1 plastic-encapsulate diodes hd zc 44 1 h igh diode semiconductor r-1 features i o 1a vrrm 50v-1000v high surge current capability applications rectifier marking polarity: color band denotes cathode 1hx x:from 1 to 8 1h1 thru 1h8 high efficient rectifier item symbol unit i f(av) i fsm i 60hz half-sine wave, resistance load, ta=50 60hz half-sine wave,1 cycle, ta=25 300 8 1.0 30 1h1 item symbol unit test condition 1 2 3 4 5 6 7 8 peak forward voltage v fm v i fm =1.0a i rrm1 t a =25 5 peak reverse current i rrm2 a v rm =v rrm t a =125 50 reverse recovery time t rr ns i f =0.5a i r =1a i rr =0.25a 50 75 thermal resistance(typical) r j-a /w between junction and ambient 50 1.0 1.3 1.7 1h1 35 70 140 280 420 560 700 210 max i mum r m s v rms v vo ltage
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