SR303

**SR302** THRU **SR310** ~~S~~ ~~**b** ee~~ 3.0 AMPS. Schottky Barrier Rectifiers Voltage Range 20 to 100 Volts Current 3.0 Amperes **DO-201AD Features** + Low forward voltage drop + High current capability ~~+~~ High reliability ~~a~~ High surge current capability ~~*~~ 97'8 ~~0~~ ) 1.0 (25 ~~.~~ 4) **Mechanical Data** o ~~m e~~ ¢ Cases: DO-201AD molded plastic ~~B~~ 89 ~~o~~ Epoxy: UL 94V-O rate flame retardant ~~+~~ Lead: Axial leads, solderable per MILSTD-202, Method 208 guaranteed > Polarity: Color band denotes cathode end 1.0 (25MIN ~~..~~ 4) + High temperature soldering guaranteed: ~~Dt~~ ashy 250[O] C/10 seconds/.375”,(9.5mm) lead DIA ~~.~~ lengths at 5 lbs., (2.3kg) tension +> Weight: 1.1 grams **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% 

~~Pp~~ **Type Number** ~~or—(i‘“‘“‘“~~ **SR302** ~~lll~~ **SR303 SR304 SR305 SR306 SR309 SR310** ~~lf~~ Units ~~QO~~ Maximum Recurrent Peak Reverse Voltage 20 30 40 50 ~~OO~~ 60 ~~OO~~ 90 100 V ~~GO~~ Maximum RMS Voltage 14 21 ~~GO~~ 28 35 ~~GO~~ 42 63 70 V ~~QQ~~ Maximum DC Blocking Voltage 20 30 40 50 ~~GO~~ 60 90 100 V Maximum Average Forward Rectified Current See Fig. 1 3.0 A Peak Forward Surge Current, 8.3 ms Single Half Sinewave Superimposed on Rated Load (JEDEC method ) 80 150 A ~~a~~ Maximum Instantaneous Forward Voltage @3.0A 0.55 0.70 0.79 V Maximum D.C. Reverse Current   @ TA=25 ℃ 0.5 0.6 mA at Rated DC Blocking Voltage     @ TA=100 ℃ 30 20 mA ~~a~~ Typical Thermal Resistance (Note 1) R θ JA 40 **℃** /W ~~a~~ Typical Junction Capacitance (Note 2) ~~GQ~~ 300 250 72 pF ~~a~~ Operating Junction Temperature Range TJ -65 to +125 -65 to +150 **℃** ~~a~~ Storage Temperature Range TSTG -65 to +150 **℃** Notes: 1. Thermal Resistance from Junction to Ambient Vertical P.C. Board Mounting, 0.375”(9.5mm) Lead Length 

2. Measured at 1 MHz and Applied Reverse Voltage of 4.0V D.C. 

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## RATINGS AND CHARACTERISTIC CURVES (SR302 THUR SR310) 

FIG.1- MAXIMUM FORWARD CURRENT DERATING CURVE 

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4<br>3<br>2<br>1<br>0<br>0 25 50 75 100 125 150 175<br>LEAD TEMPERATURE. (oC)<br>AMPERES SR302-SR304 SR305-SR310<br>AVERAGE FORWARD CURRENT.<br>**----- End of picture text -----**<br>


FIG.3- TYPICAL REVERSE CHARACTERISTICS 

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10<br>Tj=1250C<br>1.0<br>.10<br>Tj=750C<br>.01 Tj=250C<br>SR302-304<br>SR305-310<br>.001<br>0 20 40 60 80 100 120 140<br>PERCENT OF RATED PEAK REVERSE VOLTAGE. (%)<br>INSTANTANEOUS REVERSE CURRENT. (mA)<br>**----- End of picture text -----**<br>


FIG.2- TYPICAL FORWARD CHARACTERISTICS 

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50<br>10<br>1.0<br>Tj=25 [o] C<br>Pulse Width=300 s<br>1% Duty Cycle<br>0.1<br>.2 .3 .4 .5 .6 .7 .8 .9 1.0<br>FORWARD VOLTAGE. (V)<br>FIG.4- TYPICAL JUNCTION CAPACITANCE<br>1000<br>600<br>400<br>200<br>100<br>80<br>60<br>40<br>20<br>10<br>.1 .2 .4 1.0 2 4 10 20 40 100<br>REVERSE VOLTAGE. (V)<br>FIG.5- MAXIMUM NON-REPETITIVE FORWARD<br>SURGE CURRENT<br>150<br>8.3ms Single Half Sine Wave<br>JEDEC Method<br>120<br>90<br>60<br>30<br>0<br>1 2 4 6 8 10 20 40 60 80 100<br>NUMBER OF CYCLES AT 60Hz<br>SR309-SR310<br>SR302-SR306<br>SR302-SR304<br>SR309-310<br>SR302-304<br>SR305-306<br>SR305-SR306<br>SR309-SR310<br>INSTANTANEOUS FORWARD CURRENT. (A)<br>JUNCTION CAPACITANCE.(pF)<br>AMPERES<br>PEAK FORWARD SURGE CURRENT<br>**----- End of picture text -----**<br>


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