SSF81 thru SSF84 CHENG- YI SUPER FAST RECOVERY RECTIFIER ELECTRONIC VOLTAGE RANGE 50 TO 200 Volts CURRENT 8.0 Amperes TO-220AC FEATURE Low switching noise Low forward voltage drop Low leakage current High current capability Super fast switching speed High reliability Good for switching mode circuit MECHANICAL DATA Case:TO-220A molded plastic Epoxy:UL 94V-0 rate reatardant Lead:MIL-STD-202 method 208 quaranteed Mounting position:any CASE POSITIVE SUFFIX "p" CASE NEGATIVE SUFFIX "N" MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS Ratings at 250C ambient temperature unless otherwise specified. Signle phase, half wave, 60Hz, resistive or inductive load. For capacitive load, derate current by 20%. Maximum Recurrent Peak Reverse Voltage SSF81 SSF82 SSF83 SSF84 UNITS 50 100 150 200 V Maximum RMS Voltage 35 70 105 140 V Maximum DC Blocking Voltage 50 100 150 200 V Maximum Average Forward Rectified Current, at TC =1000C 8.0 A Peak Forward Surge Current 8.3 ms single half sine-wave superimposed on rated load (JEDEC method) 125 A 0.975 V Maximum Instantaneous Forward Voltage at 8.0A DC Maximum DC Reverse Current at Rated DC Blocking Voltage 0 @TC=25 C 10 A @TC=1000C 150 A Maximum Reverse Recovery Time (Note 1) 35 Typical Junction Capacitance (Note 2) 65 Operating and Storage Temperature Range Notes : 1. Test Conditions : IF=0.5A, I R=1.0A, Irr=0.25A 2. Measured at 1MHz and applied reverse voltage of 4.0 Volts -65 to +150 nS pF 0 C SSF81 thru SSF84 CHENG- YI SUPER FAST RECOVERY RECTIFIER ELECTRONIC RATING AND CHARACTERISTICS CURVES SSF81 THRU SSF84 Fig. 1 - REVERSE RECOVERY TIME CHARACTERISTIC AND TEST CIRCUIT DIAGRAM 50 NONINDUCTIVE trr 10 NONINDUCTIVE +0.5A ( ) D.U.T. (+) 0 PULSE GENERATOR (NOTE 2) 25 Vdc (approx.) ( ) OSCILLOSCOPE (NOTE 1) 1 NONINDUCTIVE -0.25 (+) -1.0A NOTES : 1. Rise Time=7ns max., Input Impedance= 1 megohm, 22pF. 2. Rise Time=10ns max., Source Impedance= 50 ohms. SET TIME BASE FOR 5 / 10ns/cm 1cm Fig. 3 - TYPICAL INSTANTANEOUS FORWARD CHARACTERISTICS AVERAGE FORWARD RECTIFIED CURRENT, AMPERES 12.0 SINGLE PHASE HALF WAVE 60Hz RESISTIVE OR INOUCTIVE LOAD .375" LEAD LENGTH 10.0 8.0 6.0 4.0 2.0 INSTANTANEOUS FORWARD CURRENT, AMPERES Fig. 2 - FORWARD CURRENT DERATING CURVE 10 1.0 0 TJ = 25 C 0.1 .01 0 25 50 100 75 125 150 .2 175 0 .4 .6 .8 1.0 1.2 1.4 INSTANTANEOUS FORWARD VOLTAGE, VOLTS AMBIENT TEMPERATURE, C 100 0 CAPACITANCE-pF TJ=25C 10 1 1 10 REVERSE VOLTAGE, VOLTS 100 FORWARD SURGE CURRENT, AMPERES, PK (HALF-SINE WAVE) Fig. 4 - TYPICAL JUNCTION CAPACITANCE Fig. 5 - PEAK FORWARD SURGE CURRENT 250 200 0 TJ=25C 150 100 50 0 1 10 NUMBER OF CYCLES AT 60Hz 100