rk 43 - rk 44 schottky barrier rectifier diodes prv : 30 - 40 volts i o : 3 . 0 amperes features : * high current capability * high surge current capability * high reliability * high efficiency * low power loss * low cost * low forward voltage drop 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 : 1.1 grams maximum ratings and electrical characteristics rating at 25 c ambient temperature unless otherwise specified . single phase, half wave, 60 hz, resistive or inductive load. for capacitive load, derate current by 20%. symbol RK43 rk44 un it maximum peak reverse voltage v rm v maximum peak reverse surge voltage v rsm v maximum average forward current t l = 109 c i f(av) a maximum peak forward surge current, 8.3ms single half sine wave superimposed on rated load (jedec method) maximum forward voltage at if = 3.0 a v f v maximum reverse current at v rm ta = 25 c i r ma maximum reverse current at v rm ta = 100 c i r(h) ma junction temperature range t j c storage temperature range t stg c note : ( 1 ) pulse test : pulse width = 300 m s, duty cycle = 2 %. page 1 of 2 rev. 02 : september 7, 2005 - 40 to + 150 0.55 5.0 50 - 40 to + 150 3.0 80 i fsm a rating 30 40 35 45 do-201ad 0.21 (5.33) 0.19 (4.82) 0.375 (9.52) 0.285 (7.24) 0.052 (1.32) 0.048 (1.22) 1.00 (25.4) min. 1.00 (25.4) min. dimensions in inches and ( millimeters )
rating and characteristic curves ( RK43 - rk44 ) fig.1 - derating curve for output fig.2 - maximum non-repetitive peak rectified current forward surge current 80 90 100 110 120 130 140 150 1 2 4 6 10 20 40 60 100 lead temperature, ( c) number of cycles at 50hz fig.3 - typical forward characteristics fig.4 - typical reverse characteristics 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 page 2 of 2 rev. 02 : september 7, 2005 ta = 25 c 4 3 2 1 5 10 10 1.0 80 0 100 0 60 40 20 1.0 80 0.01 0.1 0.1 100 140 0 20 40 60 120 percent of rated reverse voltage, (%) peak forward surge current, amperes average forward output current, amperes forward current, amperes reverse current, milliamperes t j = 25 c t j = 100 c forward voltage, volts 0.001 0.01
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