dimensions in inches and (millimeters) smc/do-214ab features for surface mounted application glass passivated junction chip. low forward voltage drop high current capability easy pick and place high surge current capability plastic material used carries underwriters laboratory classification 94v-0 high temperature soldering: 260 o c / 10 seconds at terminals mechanical data case: molded plastic terminals: pure tin plated, lead free. polarity: indicated by cathode band weight: 0.21 gram maximum ratings and electrical characteristics rating at 25 o c 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 s4a s4b s4d S4G s4j s4k s4m units maximum recurrent peak reverse voltage v rrm 50 100 200 400 600 800 1000 v maximum rms voltage v rms 35 70 140 280 420 560 700 v maximum dc blocking voltage v dc 50 100 200 400 600 800 1000 v maximum average forward rectified current @t l =75 o c i (av) 4.0 a peak forward surge current, 8.3 ms single half sine-wave superimposed on rated load (jedec method ) i fsm 100 a maximum instantaneous forward voltage @ 4.0a v f 1.15 v maximum dc reverse current @ t a =25 o c at rated dc blocking volta g e @ t a =125 o c i r 10 250 ua ua maximum reverse recovery time ( note 1 ) trr 2.5 us typical junction capacitance ( note 2 ) cj 60 pf typical thermal resistance (note 3) r jl r ja 13 47 o c /w operating temperature range t j -55 to +150 o c storage temperature range t stg -55 to +150 o c notes: 1. reverse recovery test conditions: i f =0.5a, i r =1.0a, i rr =0.25a 2. measured at 1 mhz and applied v r =4.0 volts 3. measured on p.c. board with 0.6? x 0.6? (16mm x 16mm) copper pad areas. s4a-s4m 4.0amps. surface mount rectifiers http://www.luguang.cn mail:lge@luguang.cn
ratings and characteristic curves (s4a thru s4m) fig.3- maximum non-repetitive forward surge current peak forward surge current. (a) 1 10 50 5 100 50 10 100 200 number of cycles at 60hz 8.3ms single half sine wave jedec method tj=tj max fig.4- typical junction capacitance junction capacitance.(pf) 100 50 10 5 1 10 5 100 50 reverse voltage. (v) 0 tj=25 c f=1.0mhz vsig=50mvp-p fig.5- typical forward characteristics instantaneous forward current. (a) 1.4 1.6 0.6 0.7 0.8 0.9 1.0 1.2 0.01 0.03 0.1 0.3 1 3 10 100 30 forward voltage. (v) pulse width-300 s 2% duty cycle 0 tj=25 c fig.2- typical reverse characteristics 0 20 40 60 80 100 120 140 0.1 1 10 100 percent of rated peak reverse voltage. (%) 0 tj=125 c 0 tj=25 c instantaneous reverse current. ( a) fig.1- maximum forward current derating curve average forward current. (a) 50 60 70 80 100 110 120 130 140 90 150 1.5 3.0 4.5 4.0 3.5 2.0 2.5 o lead temperature. ( c) resistive or inductive load 2 p. c. board mounted on 16mm pad areas 0 165 fig.6- reverse recovery time characteristic and test circuit diagram 50w noninductive 1w non inductive oscilloscope (note 1) pulse generator (note 2) dut (+) 50vdc (approx) (-) notes: 1. rise time=7ns max. input impedance= 1 megohm 22pf 2. rise time=10ns max. sourse impedance= 50 ohms (-) (+) 10w noninductive -1.0a -0.25a 0 +0.5a trr 1cm set time base for 5/ 10ns/ cm s4a-s4m 4.0amps. surface mount rectifiers http://www.luguang.cn mail:lge@luguang.cn
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