- 38 - sk32b thru sk310b 3.0 amps. surface mount schottky barrier rectifiers voltage range 20 to 100 volts current 3.0 amperes features for surface mounted application metal to silicon rectifier, majority carrier conduction low forward voltage drop easy pick and place high surge current capability plastic material used carriers underwriters laboratory classification 94v-o epitaxial construction high temperature soldering: 260 o c / 10 seconds at terminals mechanical data case: molded plastic terminals: solder plated polarity: indicated by cathode band packaging: 16mm tape per eia std rs-481 weight: 0.1 gram smb/do-214aa 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 sk 32b sk 33b sk 34b sk 35b sk 36b sk 39b sk 310b units maximum recurrent peak reverse voltage v rrm 20 30 40 50 60 90 100 v maximum rms voltage v rms 14 21 28 35 42 63 70 v maximum dc blocking voltage v dc 20 30 40 50 60 90 100 v maximum average forward rectified current at t l (see fig. 1) i (av) 3.0 a peak forward surge current, 8.3 ms single half sine-wave superimposed on rated load (jedec method ) i fsm 100 150 a maximum instantaneous forward voltage @ 3.0a v f 0.5 0.75 0.85 v 0.5 0.6 maximum dc reverse current (note 1) @ t a =25 at rated dc blockin g volta g e @ t a =100 i r 20 10.0 20.0 ma ma typical thermal resistance ( note 2 ) r jl r ja 17 75 /w /w operating temperature range t j -55 to +125 -55 to +150 storage temperature range t stg -55 to +150 notes : 1. pulse test with pw=300 usec, 1% duty cycle 2. measured on p.c.board with 0.4 x 0.4?(10 x 10mm) copper pad areas. .082(2.08) .076(1.93) .012(.31) .006(.15) .012(.31) .006(.15) .008(.20) .004(.10) .056(1.41) .035(0.90) .147(3.73) .137(3.48) .187(4.75) .167(4.25) .103(2.61) .078(1.99) .208(5.28) .200(5.08)
-39- ratings and characteristic curves (sk32b thru sk310b) fig. 1- maximum forward current derating curve fig. 2- maximum non-repetitive peak forward current surge fig. 3- typical forward characteristics fig. 4- typical reverse characteristics fig. 5- typical junction capacitance average for ward current .(a) peak for ward surge current .(a) instantaneous for ward current .(a) instantaneous reverse current .(ma) junction cap acitance.(pf) lead temp erature.( c) number of cycles at 60hz forward voltage.(v) percent of rated peak reverse voltage.(%) reverse voltage.(v) t, pulse duration, (sec) 50 60 70 80 90 100 110 120 130 140 150 160 0 1.0 2.0 3.0 1 0 10 100 30 60 90 120 150 0.2.4.6.8 1.0 1.2 1.4 1.5 0.01 0.1 1.0 10.0 40 0 20 40 60 80 100 120 140 0.001 0.01 0.1 1.0 10 20 .1 10 1.0 10 100 100 1000 0.01 0.1 0.1 1 10 100 resistive or inductiveload pcb mounted on 0.4x0.4" (10x10mm)copper pad areas pulse width=300 s 1% duty cycle ta=125 c ta=75 c ta=25 c tj=25 c f=1.0mhz vsig=50mvp-p transcient thermal impedance, c/w 1 10.0 100 at rated tl 8.3ms single half sine wave jedec method sk35b-sk310b sk32b-sk34b sk32b-sk36b SK39B-sk310b SK39B-sk310b sk35b-sk36b sk32b-sk34b sk32b-sk34b SK39B-sk310b sk35b-sk36b tj=25 c tj=125 c tj=125 c sk32b-sk34b SK39B-sk310b sk35b-sk36b fig.6- typical transient thermal characteristics
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