FR251 LRC | Alldatasheet
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LESHAN RADIO COMPANY, LTD. 19A–1/2 TYPE Maximum Peak Reverse Voltage Maximum Average Rectified Current @ Half-Wave Resistive Load 60Hz Maximum Forward Peak Surge Current @ 8.3ms Superimposed Maximum Reverse Current @ PRV @ TA=25ºC Maximum Forward Voltage @ TA=25ºC Package Dimensions Maximum Reverse Recovery Time 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 PRV V PK I O @ T L A AV ºC I FM (Surge) A PK I R µAdc I FM V FM A PK V PK Trr ns FR251 – FR257P R – 3 2.5A 2.5A FAST RECOVERY DIODES FR251 FR252 FR253 FR254 FR255 FR256 FR257 FR257P 100 200 400 600 800 1000 1000 2.5 150 2.575 5.0 1.3 150 150 150 150 250 500 500 250 R - 3 1.0(25.4) MIN .160(4.1) .138(3.5) .042(1.1) DIA .041(1.0) 1.0(25.4) MIN .160(4.1) DIA .138(3.5)
LESHAN RADIO COMPANY, LTD. 19A–2/2 FR251 – FR257P 2.5A RATING & CHARACTERISTIC CURVES OF 2.5A FAST DIODES FIG. 2 – TYPICAL FORWARD CURRENT DERATING CURVE AMBIENT TEMPER ATURE, (ºC) +0.5A -0.25A -1.0A 1cm Trr NOTES:1.Rise Time=7ns max. Input Impedance=1megohm.22pF. 2.Rise Time=10ns max. Source Impedance=50 ohms. (+) PULSE GENERATOR (NOTE 2) (-)D.U.T. OSCILLOSCOPE (NOTE 1) NON. INDUCTIVE (+) 25Vdc (APPROX) (-) 50 Ω 10 Ω NONINDUCTIVE NONINDUCTIVE FIG.1–TEST CIRCUIT DIAGRAM AND REVERSE RECOVERY TIME CHARACTERISTIC SET TIME A VERAGE FORWARD CURRENT,(A) BASE FOR 50/100ns/cm INSTANTANEOUS FOWARD CURRENT (A) INSTANTANEOUS FORWARD VOLTAGE, (%) FIG. 3 – TYPICAL INSTANTANEOUS FORWARD CHARACTERISTICS FIG. 5 – TYPICAL JUNCTION CAPACITANCE FIG. 4 – MAXINUM NON-REPETITIVE FOWARD SURGE CURRENT JUNCTION CAPACITANCE,(pF) REVERSE VOLTAGE,(V) PEAK FORWARD SURGE CURRENT,(A) NUMBER OF CYCLES A T 60Hz 3.0 1.0 0.3 0.1 .03 .01 TJ =25ºC Pulse Width=300µs 1% Duty Cycle 8.3ms Single Half Sine-Wave (JEDEC Method) 105 1 2 5 10 20 50 100 .1 .2 .4 1.0 2 4 10 20 40 100 200 100 TJ =25ºC 0 25 50 75 100 125 150 175 2.5 2.0 .1.5 1.0 Single Phase Half Wave 60Hz Resistive or Inductive Load