SF21

LESHAN RADIO COMPANY, LTD. SF21 – SF26 SUPER FAST DIODES Maximum Peak Reverse Voltage PRV VPK Maximum Average Rectified Current @ Half-Wave Resistive Load 60Hz IO@ TL AAV ºC Maximum Forward Peak Surge Current @ 8.3ms Superimposed I FM (Surge) A PK Maximum Reverse Current @ PRV @ TA=25ºC I R TYPE Maximum Forward Voltage @ TA=25ºC I FM A PK V FM V PK Maximum Reverse Recovery Time T rr ns Package Dimensions µAdc SF21 SF22 SF23 SF24 SF25 SF26 50 100 150 200 300 400 2.0 55 75 5.0 2.0 0.95 0.95 0.95 0.95 1.25 1.25 DO - 15 35 Trr I F=0.5A, I R=1.0A, I RR=0.25A Trr Test Conditions: I F=0.5A, I R=1.0A, I RR=0.25A 1.0(25.4) MIN .300(7.6) .230(5.8) 1.0(25.4) MIN .034(0.9) .028(0.7) DIA .140(3.6) DIA .104(2.6) DO – 15 8A–1/2 LESHAN RADIO COMPANY, LTD. SF21-SF26 RATING AND CHARACTERISTIC CURVES OF SUPER FAST DIODES FIG.1-TEST CIRCUIT DIAGRAM AND REVERSE RECOVERY TIME CHARACTERISTIC 50 Ω NONINDUCTIVE 10 Ω NONINDUCTIVE D.U.T. (-) PULSE G E N E R AT O R (NOTE 2) (+) 0 -0.25A FIG. 2 - TYPICAL FORWARD CURRENT DERATING CURVE AVERAGE FORWARD CURRENT,(A) 3.0 +0.5A Trr (+) 25Vdc (APPROX) (-) 2.0 1Ω NON. INDUCTIVE OSCILLOSCOPE (NOTE 1) 1.0 Single Phase Half Wave 60Hz Resistive or Inductive Load 25 50 75 100 125 150 175 NOTES:1.Rise Time=7ns max. Input Impedance=1megohm.22pF. 2.Rise Time=10ns max. Source Impedance=50 ohms. -1.0A 1cm SET TIME BASE FOR 10 ns/cm AMBIENT TEMPER ATURE, (ºC) FIG. 3 - TYPICAL REVERSE CHARACTERISTICS 100 INSTANTANEOUS REVERSE CURRENT (µA) FIG. 4 - TYPICAL INSTANTANEOUS FORWARD CHARACTERISTICS 10 TJ =150ºC 10 TJ =100ºC 1.0 INSTANTANEOUS FORWARD CURRENT, (A) TJ =25ºC 1.0 .1 SF2 6 SF2 5~ 0.1 TJ =25ºC .01 SF2 1~S F24 .01 20 40 60 80 100 120 Pulse Width=300µs 1% Duty Cycle .6 .8 1.0 1.2 1.4 .001 .2 .4 PERCENT OF RATED PEAK REVERSE VOLTAGE, (%) INSTANTANEOUS FORWARD VOLTAGE,(V) FIG. 5 - MAXINUM NON-REPETITIVE FOWARD SURGE CURRENT 90 PEAK FORWARD SURGE CURRENT,(A) FIG. 6 - TYPICAL JUNCTION CAPACITANCE 75 60 50 45 30 15 8.3msSingleHalfSine-Wave (JEDECMethod) JUNCTION CAPACITANCE,(pF) 200 100 60 40 20 10 6 4 2 1 .1 .2 .4 1.0 2 4 10 20 40 100 TJ=25¡æ SF25¡«S F26 SF21¡«S F24 1 2 5 10 20 50 100 NUMBER OF CYCLES AT 60Hz REVERSE VOLTAGE,(V) 8A–2/2