- 242 - sf21g thru sf28g 2.0 amps. glass passivated super fast rectifiers voltage range 50 to 600 volts current 2.0 amperes f eatures low forward voltage drop high current capability high reliability high surge current capability m echanical 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) m aximum 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 unit s 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 appli ed reverse voltage of 4.0 v d.c. 3. mount on cu-pad size 10mm x 10mm on pcb.
- 243 - 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 0 20 40 60 80 100 120 140 0.1 1 10 100 1000 percent of rated peak reverse voltage. (%) tj=25 c 0 tj=125 c 0 tj=75 c 0 fig.6- typical junction capacitance junction cap acitance.(pf) 0.1 0.5 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 0.01 0.1 1 10 100 forward voltage. (v) tj=25 c pulse width=300 s 1% duty cycle o sf21g~SF24G sf25g~sf26g sf27g~sf28g instantaneous reverse current .( a) 0 0
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