Bulletin PD-2.243 rev. C 07/01 444CNQ... SERIES SCHOTTKY RECTIFIER 440 Amp TO-244AB Major Ratings and Characteristics Characteristics IF(AV) Rectangular Description/Features 444CNQ... Units 440 A VRRM range 35 to 45 V IFSM @ tp = 5 µs sine 35,000 A 0.51 V waveform VF @ 220Apk, TJ=125°C TJ range - 55 to 125 °C 80.01 [3.150] 40.26 [1.585] 39.75 [1.565] COMMON CATHODE 7.49 [.295] 6.99 [.275] Center tap module High purity, high temperature epoxy encapsulation for enhanced mechanical strength and moisture resistance High frequency operation Guard ring for enhanced ruggedness and long term reliability Ø 10.41 [.410] 9.65 [.380] 20.32 [.800] 17.78 [.700] 34.925 [1.375] REF. 63.50 [2.500] 60.96 [2.400] 23.55 [.927] 20.42 [.804] Ø LUG TERMINAL ANODE 1 LUG TERMINAL ANODE 2 4.95 [.195] 4.70 [.185] 1/4-20 SLOTTED HEX BASE COMMON CATHODE 15.75 [.620] 14.99 [.590] 92.71 [3.650] 90.17 [3.550] NOTES: 1. DIMENSIONS ARE SHOWN IN MILLIMETERS [INCHES]. 2. CONTROLLING DIMENSION: MILLIMETER www.irf.com 125 °C TJ operation Low forward voltage drop (per leg) 2X Ø The 444CNQ 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 125 °C junction temperature. Typical applications are in high current switching power supplies, plating power supplies, UPS systems, converters, free-wheeling diodes, welding, and reverse battery protection. 3.35 [.132] 3.02 [.119] Modified JEDEC Outline TO-244AB Dimensions in millimeters and (inches) 1 444CNQ... Series Bulletin PD-2.243 rev. C 07/01 Voltage Ratings Part number VR 444CNQ035 444CNQ040 444CNQ045 35 40 45 Max. DC Reverse Voltage (V) VRWM Max. Working Peak Reverse Voltage (V) Absolute Maximum Ratings Parameters 444CNQ Units Conditions IF(AV) Max. Average Forward Current 440 A 50% duty cycle @ TC = 81 °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 35,000 Surge Current (Per Leg) * See Fig. 7 3800 EAS Non-Repetitive Avalanche Energy (Per Leg) 270 mJ IAR Repetitive Avalanche Current (Per Leg) 40 A 5µs Sine or 3µs Rect. pulse TJ = 25 °C, IAS = 40 Amps, L = 0.34 mH Current decaying linearly to zero in 1 µsec Frequency limited by TJ max. VA = 1.5 x VR typical Electrical Specifications Parameters VFM IRM 444CNQ Units Conditions Max. Forward Voltage Drop (Per Leg) * See Fig. 1 (1) 0.53 0.69 0.51 V V V @ 220A @ 440A @ 220A 0.68 V @ 440A 20 mA TJ = 25 °C 2400 mA TJ = 125 °C Max. Reverse Leakage Current (Per Leg) * See Fig. 2 (1) TJ = 25 °C TJ = 100 °C VR = rated VR CT Max. Junction Capacitance (Per Leg) 10,300 pF VR = 5VDC, (test signal range 100Khz to 1Mhz) 25°C LS Typical Series Inductance (Per Leg) 5.0 nH From top of terminal hole to mounting plane 10,000 V/ µs dv/dt Max. Voltage Rate of Change (Rated VR) (1) Pulse Width < 300µs, Duty Cycle <2% Thermal-Mechanical Specifications Parameters 444CNQ Units Conditions TJ Max. Junction Temperature Range -55 to 125 Tstg Max. Storage Temperature Range -55 to 125 °C °C RthJC Max. Thermal Resistance Junction to Case (Per Leg) 0.20 °C/W DC operation RthJC Max. Thermal Resistance Junction to Case (Per Package) 0.10 °C/W DC operation RthCS Typical Thermal Resistance, Case to Heatsink wt Approximate Weight T Mounting Torque Base Min. Max. Mounting Torque Center Hole Typ. Terminal Torque Min. Max. 0.10 °C/W Mounting surface , smooth and greased Case Style 2 79 (2.80) 24 (20) 35 (30) 13.5 (12) 35 (30) 46 (40) * See Fig. 4 g (oz.) Kg-cm (Ibf-in) TO - 244AB Modified JEDEC www.irf.com 444CNQ... Series Bulletin PD-2.243 rev. C 07/01 Reverse Current - I R (mA) 10000 100 1000 T =125°C J 100°C 100 75°C 10 50°C 1 25°C .1 0 5 10 15 20 25 30 35 40 45 Reverse Voltage - VR (V) T =125°C J Fig. 2 - Typical Values Of Reverse Current Vs. Reverse Voltage (Per Leg) T =100°C J 10000 T = 25°C J Junction Capacitance - C T (p F) Instantaneous Forward Current - I F (A) 1000 10 1 0 .1 .2 .3 .4 .5 .6 .7 .8 .9 T =25°C J 1000 0 1 1.1 Forward Voltage Drop - VFM (V) 10 20 30 40 50 Reverse Voltage - VR (V) Fig. 3 - Typical Junction Capacitance Vs. Reverse Voltage (Per Leg) Fig. 1 - Max. Forward Voltage Drop Characteristics (Per Leg) Thermal Impedance Z thJC (°C/W) 1 .1 D=0.50 D=0.33 D=0.25 P DM t 1 t2 D=0.17 .01 D=0.08 Notes: 1. Dutyfactor D= t1/ t2 SinglePulse (Thermal Resistance) .001 .00001 .0001 .001 .01 2. PeakT =P xZ +T J DM thJC C .1 1 10 100 t1 , Rectangular Pulse Duration (Seconds) Fig. 4 - Max. Thermal Impedance ZthJC Characteristics (Per Leg) www.irf.com 3 444CNQ... Series Bulletin PD-2.243 rev. C 07/01 200 444CNQ RthJC (DC) =0.20°C/W 120 Average Power Loss (Watts) Allowable Case Temperature (°C) 130 110 100 DC 90 80 0 50 D=0.08 175 D=0.17 D=0.25 150 D=0.33 D=0.50 125 RMSLimit 100 75 25 0 0 100 150 200 250 300 350 Average Forward Current - IF(AV) (A) 50 100 150 200 250 300 350 Average Forward Current - IF(AV) (A) Fig. 5 - Max. Allowable Case Temperature Vs. Average Forward Current (Per Leg) Non-Repetitive Surge Current - I FSM (A) DC 50 Fig. 6 - Forward Power Loss Characteristics (Per Leg) 100000 At Any Rated Load Condition And With Rated V RRM Applied Following Surge 10000 1000 10 100 1000 10000 Square Wave Pulse Duration - t p (microsec) Fig. 7 - Max. Non-Repetitive Surge Current (Per Leg) L D UT IRFP460 Rg = 2 5 oh m C UR RE N T M O N ITO R H IG H -SPE ED SW IT C H FRE E-W H EEL D IO D E + V d = 25 V olt 40H FL40S02 Fig. 8 - Unclamped Inductive Test Circuit 4 www.irf.com 444CNQ... Series Bulletin PD-2.243 rev. C 07/01 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. 07/01 www.irf.com 5