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| 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 s sine VF @ 40 Apk, TJ = 125C (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 5s Sine or 3s Rect. pulse TJ = 25 C, IAS = 8 Amps, L = 1.7 mH Current decaying linearly to zero in 1 sec 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/ s @ 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) 25C Measured lead to lead 5mm from package body dv/dt Max. Voltage Rate of Change (Rated VR) (1) Pulse Width < 300s, Duty Cycle <2% Thermal-Mechanical Specifications Parameters TJ Tstg Max. Junction Temperature Range Max. Storage Temperature Range 81CNQ Units -55 to 175 -55 to 175 0.85 0.42 0.30 7.8 (0.28) Min. Max. 40 (35) 58 (50) C C Conditions RthJC Max. Thermal Resistance Junction to Case (Per Leg) RthJC Max. Thermal Resistance Junction to Case (Per Package) RthCS Typical Thermal Resistance, Case to Heatsink (D61-8 Only) wt T Approximate Weight Mounting Torque (D61-8 Only) C/W DCoperation C/W DCoperation * See Fig. 4 C/W Mounting surface , smooth and greased g (oz.) Kg-cm (Ibf-in) 2 www.irf.com 81CNQ... Series PD-2.237 rev. B 01/99 1000 1000 100 10 1 0.1 0.01 0.001 0 5 10 15 20 25 30 35 40 45 Reverse Voltage - VR (V) T J = 175C 150C 125C 100C 75C 50C 25C 100 (A) Instantaneous Forward Current - I F 10 TJ = 175C Reverse Current - I R (mA) Fig. 2 - Typical Values Of Reverse Current Vs. Reverse Voltage (Per Leg) 10000 (pF) T TJ = 125C TJ = 25C 1 Junction Capacitance - C T = 25C J 1000 0.1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 Forward Voltage Drop - V FM (V) 100 0 10 20 30 40 50 Reverse Voltage - VR (V) Fig. 1 - Max. Forward Voltage Drop Characteristics (PerLeg) 1 Thermal Impedance Z thJC (C/W) Fig. 3 - Typical Junction Capacitance Vs. Reverse Voltage (Per Leg) 0.1 D= D= D= D= D= 0.50 0.33 0.25 0.17 0.08 PDM Notes: Single Pulse (Thermal Resistance) 0.01 0.00001 t1 t2 1. Duty factor D = t 1/ t 2 2. Peak TJ = PDM x Z thJ C+ T C 0.1 1 10 100 0.0001 0.001 0.01 t 1 , Rectangular Pulse Duration (Seconds) Fig. 4 - Max. Thermal Impedance ZthJC Characteristics (Per Leg) www.irf.com 3 81CNQ... Series PD-2.237 rev. B 01/99 180 Allowable Case Temperature - (C) R thJC (DC) = 0.85 C/W 170 Average Power Loss - (Watts) 32 28 24 20 16 12 8 4 RMS Limit DC D = 0.08 D = 0.17 D = 0.25 D = 0.33 D = 0.50 160 DC 150 140 0 10 20 30 40 50 60 Average Forward Current - I F(AV) (A) 0 0 10 20 30 40 50 60 Average Forward Current - I F(AV) (A) Fig. 5 - Max. Allowable Case Temperature Vs. Average Forward Current (Per Leg) (A) 10000 Fig. 6 - Forward Power Loss Characteristics (PerLeg) Non-Repetitive Surge Current - I FSM 1000 At Any Rated Load Condition And With Rated VRRM Applied Following Surge 100 10 100 1000 10000 Square Wave Pulse Duration - t p (microsec) Fig. 7 - Max. Non-Repetitive Surge Current (Per Leg) L HIGH-SPEED SWITCH FREE-WHEEL DIODE 40HFL40S02 Vd = 25 Volt DUT IRFP460 Rg = 25 ohm + CURRENT MONITOR Fig. 8 - Unclamped Inductive Test Circuit 4 www.irf.com 81CNQ... Series PD-2.237 rev. B 01/99 Outline Table Outline D61-8 Dimensions are in millimeters and (inches) Outline D61-8-SM Dimensions are in millimeters and (inches) www.irf.com 5 81CNQ... Series PD-2.237 rev. B 01/99 Outline Table Outline D61-8-SL Dimensions are in millimeters and (inches) FOOT PRINT WORLD HEADQUARTERS: EUROPEAN HEADQUARTERS: IR CANADA: IR GERMANY: IR ITALY: IR FAR EAST: IR SOUTHEAST ASIA: IR TAIWAN: 233 Kansas St., El Segundo, California 90245 U.S.A. Tel: (310) 322 3331. Fax: (310) 322 3332. Hurst Green, Oxted, Surrey RH8 9BB, U.K. Tel: ++ 44 1883 732020. Fax: ++ 44 1883 733408. 15 Lincoln Court, Brampton, Markham, Ontario L6T3Z2. Tel: (905) 453 2200. Fax: (905) 475 8801. Saalburgstrasse 157, 61350 Bad Homburg. Tel: ++ 49 6172 96590. Fax: ++ 49 6172 965933. Via Liguria 49, 10071 Borgaro, Torino. Tel: ++ 39 11 4510111. Fax: ++ 39 11 4510220. K&H Bldg., 2F, 30-4 Nishi-Ikebukuro 3-Chome, Toshima-Ku, Tokyo, Japan 171. Tel: 81 3 3983 0086. 1 Kim Seng Promenade, Great World City West Tower,13-11, Singapore 237994. Tel: ++ 65 838 4630. 16 Fl. Suite D.207, Sec. 2, Tun Haw South Road, Taipei, 10673, Taiwan. Tel: 886 2 2377 9936. http://www.irf.com Fax-On-Demand: +44 1883 733420 Data and specifications subject to change without notice. 6 www.irf.com |
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