81CNQ035

PD-2.237 rev. B 01/99 81CNQ... SERIES SCHOTTKY RECTIFIER 80 Amp Major Ratings and Characteristics Characteristics I F(AV) Rectangular waveform VRRM range I FSM @ tp = 5 µs sine VF @ 40 Apk, TJ = 125°C (per leg) range 35 to 45 4600 0.54 V A V Description/Features Units A The 81CNQ center tap Schottky rectifier module series has been optimized for low reverse leakage at high temperature. The proprietary barrier technology allows for reliable operation up to 175 °C junction temperature. Typical applications are in switching power supplies, converters, free-wheeling diodes, and reverse battery protection. 175 °C TJ operation Center tap module High purity, high temperature epoxy encapsulation for enhanced mechanical strength and moisture resistance Low forward voltage drop High frequency operation Guard ring for enhanced ruggedness and long term reliability Low profile, small footprint, high current package 81CNQ... 80 TJ - 55 to 175 °C Case Styles 81CNQ... 81CNQ...SM 81CNQ...SL D61-8 D61-8-SM D61-8-SL www.irf.com 1 81CNQ... Series PD-2.237 rev. B 01/99 Voltage Ratings Part number VR Max. DC Reverse Voltage (V) 35 40 45 VRWM Max. Working Peak Reverse Voltage (V) 81CNQ035 81CNQ040 81CNQ045 Absolute Maximum Ratings Parameters IF(AV) Max. Average Forward Current * See Fig. 5 IFSM EAS IAR Max. Peak One Cycle Non-Repetitive Surge Current (Per Leg) * See Fig. 7 Non-Repetitive Avalanche Energy (Per Leg) Repetitive Avalanche Current (Per Leg) 4600 790 54 8 A mJ A Following any rated load condition and with 10ms Sine or 6ms Rect. pulse rated VRRM applied 5µs Sine or 3µs Rect. pulse TJ = 25 °C, IAS = 8 Amps, L = 1.7 mH Current decaying linearly to zero in 1 µsec Frequency limited by TJ max. V A = 1.5 x VR typical 81CNQ Units 80 A Conditions 50% duty cycle @ T C = 141 °C, rectangular wave form Electrical Specifications Parameters VFM Max. Forward Voltage Drop (Per Leg) * See Fig. 1 (1) 81CNQ Units 0.60 0.74 0.54 0.66 5 45 2600 5.5 10,000 V V V V mA mA pF nH V/ µs @ 40A @ 80A @ 40A @ 80A Conditions TJ = 25 °C TJ = 125 °C VR = rated VR IRM CT LS Max. Reverse Leakage Current (Per Leg) * See Fig. 2 (1) Max. Junction Capacitance (Per Leg) Typical Series Inductance (Per Leg) TJ = 25 °C TJ = 125 °C VR = 5VDC, (test signal range 100Khz to 1Mhz) 25°C Measured lead to lead 5mm from package body dv/dt Max. Voltage Rate of Change (Rated VR) (1) Pulse Width < 300µs, Duty Cycle