MOSPEC HER301 Thru HER305 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: 3.0 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 50 & 75 Nanosecond Recovery Time ＊Plastic Material used Carries Underwriters Laboratory Flammability Classification 94V-O Plating pb free The marking is indicated by part no. add. “M”. ex:HER301M~HER305M DO-201AD 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 HER Symbol Unit 301 302 303 304 305 VRRM VRWM VR50 50 100 200 300 400 V VR(RMS) 35 70 140 210 280 V IO 3.0 IFSM 50 TJ , TSTG A A ℃ -65 to +150 ELECTRIAL CHARACTERISTICS Characteristic HER Symbol 301 302 303 MILLIMETERS MIN MAX A 5.00 5.60 B 25.40 C 8.50 9.50 D 1.20 1.30 Unit 304 305 V CASE--Transfer molded plastic uA POLARITY--Cathode indicated polarity band Maximum Instantaneous Forward Voltage (IF=3.0 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 50 75 ns Typical Junction Capacitance (Reverse Voltage of 4 volts & f=1 MHz) CP 55 45 PF 1.30 1.00 DIM 5.0 50 HER301 Thru HER305 FIG-3 FORWARD CURRENT DERATING CURVE HER301-HER303 HER304-HER305 AVERAGE FORWARD RECTIFIED CURRENT (Amp.) AVERAGE FORWARD RECTIFIED CURRENT (Amp.) FIG-1 TYPICAL FORWARD CHARACTERISITICS LEAD TEMPERATURE (℃) FIG-4TYPICAL JUNCTION CAPACITANCE HER301-HER303 HER304-HER305 REVERSE VOLTAGE (Volts.) HER301-HER303 HER304-HER305 PERCENT OF PEAK REVERSE VOLTAGE (﹪) FIG-5PEAK FORWARD SURGE CURRENT PEAK FORWARD SURGE CURRENT (Amp.) INSTANTANEOUS REVERSE CURRENT (uA.) FIG-2 TYPICAL REVERSE CHARACTERISTICS JUNCTION CAPACITANCE (PF) FORWARD VOLTAGE (Volts) NUMBER OF CYCLES AT 60 Hz Set time base for 20/50 ns/cm FIG-6 Reverse Recovery Time Characteristic and Test Circuit Diagram