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| LESHAN RADIO COMPANY, LTD. FR251 - FR257P 2.5A 2.5A FAST RECOVERY DIODES Maximum Peak Reverse Voltage PRV V PK Maximum Average Maximum Rectified Current Forward Peak @ Half-Wave Surge Current @ Resistive Load 60Hz 8.3ms Superimposed I O@ T L A AV C I FM (Surge) A PK Maximum Reverse Current @ PRV @ TA=25C I R TYPE Maximum Forward Voltage @ TA=25C I FM A PK V FM V PK Maximum Reverse Recovery Time Trr ns Package Dimensions Adc FR251 FR252 FR253 FR254 FR255 FR256 FR257 FR257P 50 100 200 400 600 800 1000 1000 2.5 75 150 5.0 2.5 1.3 150 150 150 150 250 500 500 250 R-3 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 .160(4.1) .138(3.5) 1.0(25.4) MIN .042(1.1) DIA .041(1.0) .160(4.1) DIA .138(3.5) R-3 19A-1/2 LESHAN RADIO COMPANY, LTD. FR251 - FR257P 2.5A RATING & CHARACTERISTIC CURVES OF 2.5A FAST DIODES FIG.1-TEST CIRCUIT DIAGRAM AND REVERSE RECOVERY TIME CHARACTERISTIC 50 NONINDUCTIVE 10 NONINDUCTIVE +0.5A (+) 25Vdc (APPROX) (-) D.U.T. (-) PULSE G E N E R AT O R (NOTE 2) (+) 0 -0.25A FIG. 2 - TYPICAL FORWARD CURRENT DERATING CURVE 2.5 AVERAGE FORWARD CURRENT,(A) Trr 2.0 .1.5 1.0 .5 0 0 25 50 75 100 125 150 175 Single Phase Half Wave 60Hz Resistive or Inductive Load 1 NON. INDUCTIVE OSCILLOSCOPE (NOTE 1) NOTES:1.Rise Time=7ns max. Input Impedance=1megohm.22pF. 2.Rise Time=10ns max. Source Impedance=50 ohms. -1.0A SET TIME BASE FOR 50/100ns/cm 1cm AMBIENT TEMPER ATURE, (C) FIG. 4 - MAXINUM NON-REPETITIVE FOWARD SURGE CURRENT FIG. 3 - TYPICAL INSTANTANEOUS FORWARD CHARACTERISTICS 20 10 INSTANTANEOUS FOWARD CURRENT (A) 105 PEAK FORWARD SURGE CURRENT,(A) 90 75 60 45 30 15 0 8.3ms Single Half Sine-Wave (JEDEC Method) TJ =25C 3.0 1.0 0.3 0.1 1 2 5 10 20 50 100 NUMBER OF CYCLES AT 60Hz .03 Pulse Width=300s 1% Duty Cycle .4 .6 .8 1.0 1.2 1.4 1.6 1.8 FIG. 5 - TYPICAL JUNCTION CAPACITANCE 200 100 60 JUNCTION CAPACITANCE,(pF) .01 INSTANTANEOUS FORWARD VOLTAGE, (%) 40 20 10 6 4 2 1 .1 .2 .4 1.0 2 TJ =25C 4 10 20 40 100 REVERSE VOLTAGE,(V) 19A-2/2 |
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