Bulletin PD-20040 rev. A 09/01 81CNQ...A SERIES SCHOTTKY RECTIFIER New GenIII D-61 Package 80 Amp Major Ratings and Characteristics Characteristics IF(AV) Rectangular Description/Features 81CNQ...A Units 80 A 35 to 45 V IFSM @ tp = 5 µs sine 4600 A VF 0.54 V waveform VRRM range TJ @ 40 Apk, TJ = 125°C (per leg) The 81CNQ...A 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 range - 55 to 175 °C Guard ring for enhanced ruggedness and long term reliability New fully transfer-mold low profile, small footprint, high current package Case Styles 81CNQ...A D61-8 www.irf.com 81CNQ...ASM D61-8-SM 81CNQ...ASL D61-8-SL 1 81CNQ...A Series Bulletin 20040 rev. A 09/01 Voltage Ratings Part number VR 81CNQ035A 81CNQ040A 81CNQ045A 35 40 45 Max. DC Reverse Voltage (V) VRWM Max. Working Peak Reverse Voltage (V) Absolute Maximum Ratings Parameters 81CNQ Units IF(AV) Max. Average Forward Current 80 Conditions A 50% duty cycle @ TC = 141 °C, rectangular wave form A Following any rated load condition and with 10ms Sine or 6ms Rect. pulse rated VRRM applied * See Fig. 5 IFSM Max. Peak One Cycle Non-Repetitive 4600 Surge Current (Per Leg) * See Fig. 7 790 EAS Non-Repetitive Avalanche Energy (Per Leg) 54 mJ IAR Repetitive Avalanche Current (Per Leg) 8 A 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. VA = 1.5 x VR typical Electrical Specifications Parameters VFM Max. Forward Voltage Drop Conditions 0.60 V @ 40A 0.74 0.54 V V @ 80A @ 40A 0.66 V @ 80A Max. Reverse Leakage Current 5 mA TJ = 25 °C (Per Leg) * See Fig. 2 45 mA TJ = 125 °C 2600 pF VR = 5VDC, (test signal range 100Khz to 1Mhz) 25°C 5.5 nH Measured lead to lead 5mm from package body 10000 V/ µs (Per Leg) * See Fig. 1 IRM 81CNQ Units (1) (1) CT Max. Junction Capacitance (Per Leg) LS Typical Series Inductance (Per Leg) dv/dt Max. Voltage Rate of Change (Rated VR) TJ = 25 °C TJ = 125 °C VR = rated VR (1) Pulse Width < 300µs, Duty Cycle <2% Thermal-Mechanical Specifications Parameters 81CNQ Units TJ Max. Junction Temperature Range -55 to 175 Tstg Max. Storage Temperature Range -55 to 175 °C RthJC Max. Thermal Resistance Junction to Case (Per Leg) 0.85 °C/W DCoperation RthJC Max. Thermal Resistance Junction to Case (Per Package) 0.42 °C/W DCoperation RthCS Typical Thermal Resistance, Case to Heatsink (D61-8 Only) 0.30 °C/W Mounting surface , smooth and greased Device flatness < 5 mils °C wt Approximate Weight 7.8 (0.28) g (oz.) T MountingTorque Min. 40 (35) (D61-8 Only) Max. 58 (50) Kg-cm (Ibf-in) 2 Conditions * See Fig. 4 www.irf.com 81CNQ...A Series Bulletin 20040 rev. A 09/01 1000 1000 Tj = 175˚C 100 Reverse Current - IR (mA) 100 10 125˚C 1 100˚C 75˚C 0.1 50˚C 25˚C 0.01 0.001 0 5 10 15 20 25 30 35 40 45 Reverse Voltage - VR (V) 10 Fig. 2 - Typical Values Of Reverse Current Vs. Reverse Voltage (Per Leg) T = 175˚C J 10000 T = 125˚C J Junction Capacitance - C T (p F) Instantaneous Forward Current - I F (A) 150˚C T = 25˚C J 1 T J = 25˚C 1000 0.1 0 0.2 0.4 0.6 0.8 100 1 0 10 20 30 40 Forward Voltage Drop - VFM (V) Reverse Voltage - VR (V) Fig. 1 - Max. Forward Voltage Drop Characteristics (Per Leg) Fig. 3 - Typical Junction Capacitance Vs. Reverse Voltage (Per Leg) 50 Thermal Impedance Z thJC (°C/W) 1 D = 0.50 D = 0.33 D = 0.25 D = 0.17 0.1 PDM D = 0.08 t1 t2 Notes: Single Pulse (Thermal Resistance) 1. Duty factor D = t1/ t2 2. Peak Tj = Pdm x ZthJC + Tc 0.01 0.00001 0.0001 0.001 0.01 0.1 1 10 100 t1 , Rectangular Pulse Duration (Seconds) Fig. 4 - Max. Thermal Impedance ZthJC Characteristics (Per Leg) www.irf.com 3 81CNQ...A Series Bulletin 20040 rev. A 09/01 32 RthJC (DC) = 0.85 ˚C/W Average Power Loss (Watts) Allowable Case Temperature (°C) 180 170 160 DC 150 D = 0.08 28 D = 0.17 D = 0.25 24 D = 0.33 D = 0.50 20 DC 16 RMS Limit 12 8 4 140 0 0 10 20 30 40 50 60 0 10 20 30 40 50 60 Average Forward Current - IF(AV) (A) Average Forward Current - IF(AV) (A) Fig. 5 - Max. Allowable Case Temperature Vs. Average Forward Current (Per Leg) Fig. 6 - Forward Power Loss Characteristics (Per Leg) Non-Repetitive Surge Current - I FSM (A) 10000 1000 At Any Rated Load Condition And With Rated Vrrm Applied Following Surge 100 10 100 1000 10000 Square Wave Pulse Duration - tp (microsec) Fig. 7 - Max. Non-Repetitive Surge Current (Per Leg) L D UT IRFP460 Rg = 25 ohm C URRE NT M O N ITO R H IG H-SPE ED SW ITC H FR EE-W H E EL D IO D E + V d = 25 V olt 40H FL40 S02 Fig. 8 - Unclamped Inductive Test Circuit 4 www.irf.com 81CNQ...A Series Bulletin 20040 rev. A 09/01 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...A Series Bulletin 20040 rev. A 09/01 Outline Table Outline D61-8-SL Dimensions are in millimeters and (inches) 6 www.irf.com 81CNQ...A Series Bulletin 20040 rev. A 09/01 Part Marking Information INTERNATIONAL RECTIFIER LOGO THIS IS A 81CNQ045A WITH LOT CODE 89 09 ASSEMBLED ON WW 45, 2000 IN THE ASSEMBLY LINE "A" PART NUMBER 81CNQ045A 89 09 045A DATE CODE ASSEMBLY LOT CODE YEAR 0 = 2000 WEEK 45 LINE A D61-8 INTERNATIONAL RECTIFIER LOGO THIS IS A 81CNQ045ASM WITH LOT CODE 89 09 ASSEMBLED ON WW 45, 2000 IN THE ASSEMBLY LINE "A" PART NUMBER 81CNQ045ASM 89 09 045A DATE CODE YEAR 0 = 2000 WEEK 45 LINE A ASSEMBLY LOT CODE D61-8-SM THIS IS A 81CNQ045ASL WITH LOT CODE 89 09 INTERNATIONAL RECTIFIER LOGO PART NUMBER 81CNQ045ASL ASSEMBLED ON WW 45, 2000 IN THE ASSEMBLY LINE "A" 89 09 ASSEMBLY LOT CODE 045A DATE CODE YEAR 0 = 2000 WEEK 45 LINE A D61-8-SL www.irf.com 7 81CNQ...A Series Bulletin 20040 rev. A 09/01 Data and specifications subject to change without notice. This product has been designed and qualified for Industrial Level. Qualification Standards can be found on IR's Web site. IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105 TAC Fax: (310) 252-7309 Visit us at www.irf.com for sales contact information. 09/01 8 www.irf.com