DURF840 Datasheet | Littelfuse

Description Littelfuse DUR series Ultrafast Recovery Rectifier is designed to meet the general requirements of mercial applications by providing low Trr, high-temperature, lowleakage and low forward voltage drop products. It is suitable for output rectifier, free-wheeling or boost diode in high-frequency power switching application such as switch mode power supply and DC-DC converters. Circuit Diagram 1 Cathode Maximum Ratings 2 Anode Features - Ultra-fast switching - Low reverse leakage current - High surge current capability - Low forward voltage drop - Single die in two-leaded, electrically isolated ITO220AC package - Pb-free E3 means 2nd level interconnect is Pb-free and the terminal finish material is tin(Sn) (IPC/JEDEC J-STD609A.01) Applications - Output rectifiers in switch mode power supplies (SMPS) and DC to DC converters - Free-wheeling diode or boost diode in converters and motor control circuits - Anti-parallel diode for high frequency switching devices such as IGBT - Uninterruptible Power Supplies (UPS) - Inductive heating and melting - Ultrasonic cleaners and welders Characteristics Peak Inverse Voltage Average Forward Current Peak One Cycle Non Repetitive Surge Current ( Per Leg) Symbol VRWM IF(AV) IFSM Conditions - 50% duty cycle @TC =55 °C, rectangular wave form 8.3 ms, half sine pulse Max. 400 Unit V A Electrical Characteristics Characteristics Forward Voltage Drop1 Reverse Current1 Reverse Recovery Time Symbol VF1 VF2 IR1 IR2 trr1 Conditions @8A, Pulse, TJ = 25 °C @8A, Pulse, TJ = 125 °C @VR = Rated VR , TJ = 25 °C @VR = Rated VR , TJ = 125 °C IF=500m A, IR=1A,and Irm=250m A Footnote 1: Pulse Width < 300μs, Duty Cycle...