SF34

SF31 THRU SF38 3.0 AMPS. Super Fast Rectifiers Voltage Range 50 to 600 Volts Current 3.0 Amperes Features Low forward voltage drop High current capability High reliability High surge current capability DO-201AD Mechanical Data Cases: Molded plastic Epoxy: UL 94V-O rate flame retardant Lead: Axial leads, solderable per MIL-STD-202, Method 208 guaranteed Polarity: Color band denotes cathode end High temperature soldering guaranteed: 260oC/10 seconds/.375”,(9.5mm) lead lengths at 5 lbs., (2.3kg) tension Weight: 1.2 grams Dimensions in inches and (millimeters) Maximum Ratings and Electrical Characteristics Rating at 25℃ambient temperature unless otherwise specified. Single phase, half wave, 60 Hz, resistive or inductive load. For capacitive load, derate current by 20% Symbol SF SF SF SF Type Number 31 32 33 34 Maximum Recurrent Peak Reverse Voltage VRRM 50 100 150 200 Maximum RMS Voltage VRMS 35 70 105 140 Maximum DC Blocking Voltage VDC 50 100 150 200 Maximum Average Forward Rectified Current .375 (9.5mm) Lead Length @TA = 55℃ Peak Forward Surge Current, 8.3 ms Single Half Sine-wave Superimposed on Rated Load (JEDEC method ) Maximum Instantaneous Forward Voltage @ 3.0A Maximum DC Reverse Current @ TA=25℃ at Rated DC Blocking Voltage @ TA=100℃ Maximum Reverse Recovery Time (Note 1) Typical Junction Capacitance (Note 2) Typical Thermal Resistance (Note 3) Operating Temperature Range SF 35 300 210 300 SF 36 400 280 400 SF 37 500 350 500 SF Units 38 600 V 420 V 600 V A A I(AV) IFSM VF IR Trr Cj RθJA TJ 3.0 125 0.95 5.0 100 35 80 70 1.3 1.7 V uA uA nS pF ℃/W ℃ ℃ 35 -65 to +125 Storage Temperature Range TSTG -65 to +150 Notes: 1. Reverse Recovery Test Conditions: IF=0.5A, IR=1.0A, IRR=0.25A 2. Measured at 1 MHz and Applied Reverse Voltage of 4.0 V D.C. 3. Mount on Cu-Pad Size 16mm x 16mm on PCB. - 230 - RATINGS AND CHARACTERISTIC CURVES (SF31 THRU SF38) FIG.1- REVERSE RECOVERY TIME CHARACTERISTIC AND TEST CIRCUIT DIAGRAM trr +0.5A (-) DUT (+) 50Vdc (approx) (-) PULSE GENERATOR (NOTE 2) 1W NON INDUCTIVE OSCILLOSCOPE (NOTE 1) (+) 0 -0.25A AVERAGE FORWARD CURRENT. (A) 50W NONINDUCTIVE 10W NONINDUCTIVE FIG.2- MAXIMUM AVERAGE FORWARD CURRENT DERATING 55 C 3.0 0 2.0 Single Phase Half Wave 60Hz Resistive or Inductive Load 0.375" (9.5mm) Lead Length 0 25 50 75 100 125 150 175 o 1.0 NOTES: 1. Rise Time=7ns max. Input Impedance= 1 megohm 22pf 2. Rise Time=10ns max. Sourse Impedance= 50 ohms -1.0A 1cm SET TIME BASE FOR 5/ 10ns/ cm 0 AMBIENT TEMPERATURE. ( C) FIG.3- TYPICAL REVERSE CHARACTERISTICS 1000 FIG.4- TYPICAL FORWARD CHARACTERISTICS 100 INSTANTANEOUS REVERSE CURRENT. ( A) 100 INSTANTANEOUS FORWARD CURRENT. (A) 10 Tj=100 0C 10 1 1 Tj=25 0C 0.1 SF 31 ~S F3 4 6 F3 ~S 35 38 SF SF 7~ F3 S Tj=25oC Pulse Width=300 s 1% Duty Cycle 0.1 0 20 40 60 80 100 120 140 PERCENT OF RATED PEAK REVERSE VOLTAGE. (%) 0.01 0.2 0.4 0.6 0.8 1.0 1.2 FORWARD VOLTAGE. (V) 1.4 1.6 FIG.5- MAXIMUM NON-REPETITIVE FORWARD SURGE CURRENT 175 FIG.6- TYPICAL JUNCTION CAPACITANCE 180 160 140 120 100 80 60 40 0.1 PEAK FORWARD SURGE CURRENT. (A) 150 125 100 75 50 25 0 8.3ms Single Half Sine Wave JEDEC Method JUNCTION CAPACITANCE.(pF) SF SF 31 ~S F3 4 35~ SF 38 1 2 5 10 20 50 100 0.5 1 NUMBER OF CYCLES AT 60Hz 2 5 10 20 REVERSE VOLTAGE. (V) 50 100 200 500 1000 - 231 -