- 194 - sf21g thru sf28g 2.0 amps. glass passivated super fast rectifiers voltage range 50 to 600 volts current 2.0 amperes features low forward voltage drop high current capability high reliability high surge current capability mechanical data case: molded plastic epoxy: ul 94v-o rate flame retardant lead: axial leads, solderable per mil-std- 202, method 208 guaranteed polarity: color band denotes cathode end high temperature soldering guaranteed: 260 o c/10 seconds/.375?,(9.5mm) lead lengths at 5 lbs., (2.3kg) tension mounting position: any weight: 0.40 gram do-15 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 sf 21g sf 22g sf 23g sf 24g sf 25g sf 26g sf 27g sf 28g units maximum recurrent peak reverse voltage v rrm 50 100 150 200 300 400 500 600 v maximum rms voltage v rms 35 70 105 140 210 280 350 420 v maximum dc blocking voltage v dc 50 100 150 200 300 400 500 600 v maximum average forward rectified current .375(9.5mm) lead length @ t a =55 i (av) 2.0 a peak forward surge current, 8.3 ms single half sine-wave superimposed on rated load (jedec method ) i fsm 50 a maximum instantaneous forward voltage @ 2.0a v f 0.95 1.3 1.7 v maximum dc reverse current @ t a =25 at rated dc blocking voltage @ t a =125 i r 5.0 100 ua ua maximum reverse recovery time (note 1) trr 35 ns typical junction capacitance (note 2) cj 40 20 pf typical thermal resistance (note 3) r ja 65 /w operating temperature range t j -65 to +150 storage temperature range t stg -65 to +150 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 reverse voltage of 4.0 v d.c. 3. mount on cu-pad size 5mm x 5mm on pcb.
- 195 - fig.2- maximum average forward current derating fig.1- reverse recovery time characteristic and test circuit diagram average for ward current . (a) 25 50 75 100 125 150 175 0.5 1.0 1.5 2.0 2.5 3.0 ambient temperature. ( c) o 50 noninductive 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 (-) (+) 10 noninductive -1.0a -0.25a 0 +0.5a trr 1cm set time base for 5/ 10ns/ cm single phase half wave 60hz resistive or inductive load 0.375" (9.5mm) lead length ratings and characteristic curves (sf21g thru sf28g) fig.4- typical forward characteristics fig.3- typical reverse characteristics instantaneous reverse current .( a) 0 20 40 60 80 100 120 140 .1 1 10 100 1000 percent of rated peak reverse voltage. (%) tj=25 c 0 tj=125 c 0 tj=150 c 0 fig.6- typical junction capacitance junction cap acitance.(pf) .1 .5 1 5 2 10 20 50 100 200 500 1000 25 0 50 75 100 125 150 reverse voltage. (v) sf21g ~sf24g sf25g~sf28g tj=25 c 0 fig.5- maximum non-repetitive forward surge current peak for ward surge current . (a) 1 2 5 10 20 100 50 0 10 20 30 40 50 60 number of cycles at 60hz 8.3ms single half sine wave jedec method instantaneous for ward current . (a) 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 .01 0.1 1.0 10.0 100.0 forward voltage. (v) tj=25 c pulse width=300 s 1% duty cycle o sf21g~sf24g sf25g~sf26g SF27G~sf28g
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