RM4 - RM4z silicon rectifier diodes prv : 100 - 400 volts io : 1.7 am p ere features : * high current capability * high surge current capability * high reliability * low reverse current * low forward voltage drop * pb / rohs free mechanical data : * case : do-201ad molded plastic * epoxy : ul94v-o rate flame retardant * lead : axial lead solderable per mil-std-202, method 208 guaranteed * polarity : color band denotes cathode end * mounting position : any * weight : 1.21 grams maximum ratings and electrical characteristic s ratin g at 25 c ambient tem p erature unless otherwise s p ecifi e . single phase, half wave, 60 hz, resistive or inductive load. for capacitive load, derate current by 20%. symbol RM4y RM4z RM4 unit maximum reverse voltage v rm 100 200 400 v maximum peak reverse surge voltage v rsm 150 250 450 v maximum average forward current i f(av) 1.7 (3.0 a is with heatsink) a maximum peak forward surge current half-cycle sine wave, 50 hz, single shot maximum forward voltage at i f = 3.0 a v f 0.95 v maximum reverse current ta = 25 c i r 10 a at v r = v rmax. ta = 150 c i r(h) 50 a junction temperature range t j - 40 to + 150 c storage temperature range t stg - 40 to + 150 c page 1 of 2 rev. 02 : march 25, 2005 rating i fsm 200 a 0.21 (5.33) 0.19 (4.83) do - 201a d 0.375 (9.53) 0.285 (7.24) 0.052 (1.32) 0.048 (1.22) dimensions in inches and ( millimeters ) 1.00 (25.4) min. 1.00 (25.4) min.
rating and characteristic curves ( RM4 - RM4z ) fig.1 - derating curve for output fig.2 - maximum non-repetitive peak rectified current forward surge current 0 25 50 75 100 125 150 175 1 2 4 6 10 20 40 60 100 ambient temperature, ( c) number of cycles at 60hz fig.3 - typical forward characteristics fig.4 - typical reverse characteristics 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 page 2 of 2 rev. 02 : march 25, 2005 0 3.00 2.25 1.50 0.75 3.75 10 1.0 160 0 200 0 120 80 40 100 80 1.0 0.01 0.1 100 140 20 40 60 120 percent of rated reverse voltage, (%) peak forward surge current, amperes average forward output current, amperes forward current, amperes reverse current, microamperes t j = 25 c t j = 100 c ta = 25 c 0.1 10 forward voltage, volts 20x20x1t heatsink on both sides without heatsink 5 mm 5 mm
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