MOSPEC SF21 Thru SF26 Switchmode Power Rectifiers ULTRAFAST RECTIFIERS Designed for use in switching power supplies. inverters and as free wheeling diodes. These state-of-the-art devices have the following features: 2.0 AMPERES 50-400 VOLTS ＊High Surge Capacity ＊Low Power Loss, High efficiency ＊Glass Passivated chip junctions ＊150℃ Operating Junction Temperature ＊Low Stored Charge Majority Carrier Conduction ＊Low Forward Voltage , High Current Capability ＊Ultrafast 35 & 50 Nanosecond Recovery Time ＊Plastic Material used Carries Underwriters Laboratory Flammability Classification 94V-O DO-15 ＊In compliance with EU RoHs 2002/95/EC directives MAXIMUM RATINGS Characteristic Peak Repetitive Reverse Voltage Working Peak Reverse Voltage DC Blocking Voltage RMS Reverse Voltage Average Rectifier Forward Current Non-Repetitive Peak Surge Current (Surge applied at rate load conditions halfware, single phase,60Hz ) Operating and Storage Junction Temperature Range SF Symbol 23 Unit 21 22 24 25 26 VRRM VRWM VR50 50 100 150 200 300 400 V VR(RMS) 35 70 V 105 140 210 280 IO 2.0 A 50 IFSM 35 A DIM TJ , TSTG ℃ -65 to +150 ELECTRIAL CHARACTERISTICS Characteristic SF Symbol 21 22 23 MILLIMETERS MIN MAX A 2.60 3.60 B 25.40 --- C 5.80 7.60 D 0.70 0.90 Unit 24 25 26 Maximum Instantaneous Forward Voltage (IF=2.0 Amp, TC = 25℃) VF Maximum Instantaneous Reverse Current (Rated DC Voltage, TC = 25℃) (Rated DC Voltage, TC = 125℃) IR Reverse Recovery Time ( IF = 0.5 A, IR =1.0 , Irr =0.25 A ) Trr 35 50 ns Typical Junction Capacitance (Reverse Voltage of 4 volts & f=1 MHz) CP 40 35 PF 0.95 1.30 V CASE--Transfer molded plastic uA 5.0 50 POLARITY--Cathode indicated polarity band SF21 Thru SF26 FIG-3 FORWARD CURRENT DERATING CURVE AVERAGE FORWARD RECTIFIED CURRENT (Amp.) AVERAGE FORWARD RECTIFIED CURRENT (Amp.) FIG-1 TYPICAL FORWARD CHARACTERISITICS SF21-24 SF25-26 LEAD TEMPERATURE (℃) FIG-4 TYPICAL JUNCTION CAPACITANCE SF21-24 SF25-26 REVERSE VOLTAGE (Volts.) SF25-26 FIG-5 PEAK FORWARD SURGE CURRENT SF21-24 PERCENT OF PEAK REVERSE VOLTAGE (﹪) PEAK FORWARD SURGE CURRENT (Amp.) INSTANTANEOUS REVERSE CURRENT (uA.) FIG-2 TYPICAL REVERSE CHARACTERISTICS JUNCTION CAPACITANCE (PF) FORWARD VOLTAGE (Volts) SF25-26 SF21-24 NUMBER OF CYCLES AT 60 Hz Set time base for 10/20 ns/cm FIG-6 Reverse Recovery Time Characteristic and Test Circuit Diagram