FR251 RECTRON SEMICONDUCTOR THRU TECHNICAL SPECIFICATION FR257 FAST RECOVERY RECTIFIER VOLTAGE RANGE 50 to 1000 Volts CURRENT 2.5 Amperes FEATURES * Fast switching * Low leakage * Low forward voltage drop * High current capability * High current surge R-3 * High reliability MECHANICAL DATA * Case: Molded plastic * Epoxy: Device has UL flammability classification 94V-O .042 (1.1) DIA. ( ) .040 (1.0) * Lead: MIL-STD-202E method 208C guaranteed 1.0 25.4 MIN. * Mounting position: Any * Weight: 0.54 gram ( ) .160 4.1 ( ) .138 3.5 .160 (4.1) DIA138 (3.5) 1.0 (25.4) MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS MIN. o Ratings at 25 C ambient temperature unless otherwise specified. Single phase, half wave, 60 Hz, resistive or inductive load. For capacitive load, derate current by 20%. Dimensions in inches and (millimeters) o MAXIMUM RATINGS (At TA = 25 C unless otherwise noted) RATINGS SYMBOL FR251 FR252 FR253 FR254 FR255 FR255P FR256 FR257 FR257P UNITS Maximum Recurrent Peak Reverse Voltage VRRM 50 100 200 400 600 600 800 1000 1000 Volts Maximum RMS Voltage 700 VRMS 35 70 140 280 420 420 560 700 Volts Maximum DC Blocking Voltage VDC 50 100 200 400 600 600 800 1000 1000 Volts Maximum Average Forward Rectified Current IO 2.5 Amps o at TA= 75 C Peak Forward Surge Current 8.3 ms single half sine-wave IFSM 150 Amps superimposed on rated load (JEDEC method) Typical Junction Capacitance (Note 2) CJ 60 pF 0 Operating and Storage Temperature Range TJ, TSTG -55 to + 150 C o ELECTRICAL CHARACTERISTICS (At TA = 25 C unless otherwise noted) CHARACTERISTICS SYMBOL FR251 FR252 FR253 FR254 FR255 FR255P FR256 FR257 FR257P UNITS Maximum Instantaneous Forward Voltage at 2.5A DC VF 1.3 Volts Maximum DC Reverse Current 5.0 uAmps o at Rated DC Blocking Voltage TA = 25 C IR Maximum Full Load Reverse Current Average, 100 uAmps o Full Cycle .375 (9.5mm) lead length at TL = 55 C Maximum Reverse Recovery Time (Note 1) trr 150 250 150 500 250 nSec NOTES : 1. Test Conditions: IF = 0.5A, IR = -1.0A, IRR = -0.25A 2002-11 2. Measured at 1 MHZ and applied reverse voltage of 4.0 volts ( ) RATING AND CHARACTERISTIC CURVES FR251 THRU FR257 FIG. 3 - MAXIMUM NON-REPETITIVE FORWARD FIG. 1 - TYPICAL FORWARD CURRENT DERATING CURVE SURGE CURRENT 2.5 150 125 2.0 8.3ms Single Half Sine-Wave (JEDEC Method) 100 1.5 75 1.0 50 Single Phase Half Wave 60Hz .5 Resistive or 25 Inductive Load 0 0 0 25 50 75 100 125 150 175 1 2 5 10 20 50 100 AMBIENT TEMPERATURE, ( ) NUMBER OF CYCLES AT 60Hz FIG. 3 - TYPICAL INSTANTANEOUS FIG. 4 - TYPICAL JUNCTION CAPACITANCE FORWARD CHARACTERISTICS 200 20 10 100 60 3.0 40 T = 25 J 1.0 20 Pulse Width=300uS 1% Duty Cycle 0.3 10 T = 25 J 6 0.1 4 .03 2 .01 1 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 .1 .2 .4 1.0 2 4 10 20 40 100 INSTANTANEOUS FORWARD VOLTAGE, (V) REVERSE VOLTAGE, ( V ) FIG. 5 - TEST CIRCUIT DIAGRAM AND REVERSE RECOVERY TIME CHARACTERISTIC 50 10 trr NONINDUCTIVE NONINDUCTIVE +0.5A ( - ) D.U.T 0 ( + ) PULSE 25 Vdc GENERATOR -0.25A (approx) (NOTE 2) ( - ) 1 OSCILLOSCOPE ( + ) NON- (NOTE 1) INDUCTIVE -1.0A 1cm SET TIME BASE FOR NOTES: 1 Rise Time = 7ns max. Input Impedance = 50/100 ns/cm 1 megohm. 22pF. 2. Rise Time = 10ns max. Source Impedance = 50 ohms. RECTRON INSTANTANEOUS FORWARD CURRENT, (A) AVERAGE FORWARD CURRENT, (A) JUNCTION CAPACITANCE, (pF) PEAK FORWARD SURGE CURRENT, (A)