Bulletin PD-20056 rev. A 12/01 20CTQ... 20CTQ...S 20CTQ... -1 SCHOTTKY RECTIFIER 20 Amp IF(AV) = 20Amp VR = 35 to 45V Description/Features Major Ratings and Characteristics The 20CTQ center tap Schottky rectifier 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. Characteristics 20CTQ Units IF(AV) Rectangular 20 A 35 to 45 V IFSM @ tp = 5 µs sine 1060 A VF 0.57 V High purity, high temperature epoxy encapsulation for enhanced mechanical strength and moisture resistance °C High frequency operation Guard ring for enhanced ruggedness and long term reliability waveform VRRM range TJ @ 10 Apk, TJ = 125°C 175° C TJ operation Center tap TO-220 package Low forward voltage drop (per leg) range - 55 to 175 Case Styles 20CTQ... 20CTQ... S Base Common Cathode Base Common Cathode 2 1 Anode 2 Common Cathode TO-220 www.irf.com 20CTQ... -1 Base Common Cathode 2 3 Anode 1 Anode 2 Common Cathode 2 D PAK 2 3 Anode 1 Anode 2 Common Cathode 3 Anode TO-262 1 20CTQ... Series Bulletin PD-20056 rev. A 12/01 Voltage Ratings Part number VR 20CTQ035 20CTQ040 20CTQ045 35 40 45 Max. DC Reverse Voltage (V) VRWM Max. Working Peak Reverse Voltage (V) Absolute Maximum Ratings Parameters 20CTQ Units IF(AV) Max. Average Forward Current 20 A Conditions 50% duty cycle @ TC = 145°C, rectangular wave form * See Fig. 5 IFSM Max. Peak One Cycle Non-Repetitive 1060 Surge Current (Per Leg) * See Fig. 7 265 EAS Non-Repetitive Avalanche Energy (Per Leg) 13 mJ IAR Repetitive Avalanche Current (Per Leg) 2.0 A 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 = 2.0 Amps, L = 6.5 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 20CTQ Units Max. Forward Voltage Drop (Per Leg) * See Fig. 1 (1) Conditions 0.64 0.76 0.57 V V V @ 10A @ 20A @ 10A 0.68 V @ 20A Max. Reverse Leakage Current 2 mA TJ = 25 °C (Per Leg) * See Fig. 2 15 mA TJ = 125 °C (1) TJ = 25 °C TJ = 125 °C VR = rated VR CT Max. Junction Capacitance (Per Leg) 900 pF VR = 5VDC, (test signal range 100Khz to 1Mhz) 25°C LS Typical Series Inductance (Per Leg) 8.0 nH Measured lead to lead 5mm from package body 10000 V/ µs dv/dt Max. Voltage Rate of Change (Rated VR) (1) Pulse Width < 300µs, Duty Cycle <2% Thermal-Mechanical Specifications Parameters 20CTQ Units TJ Max. Junction Temperature Range -55 to 175 °C Tstg Max. Storage Temperature Range -55 to 175 °C Conditions RthJC Max. Thermal Resistance Junction to Case (Per Leg) 3.25 °C/W DC operation RthJC Max. Thermal Resistance Junction to Case (Per Package) 1.63 °C/W DC operation RthCS Typical Thermal Resistance, Case to Heatsink 0.50 °C/W Mounting surface , smooth and greased wt Approximate Weight T Mounting Torque 2 2 (0.07) g (oz.) Min. 6 (5) Max. 12 (10) Kg-cm (Ibf-in) * See Fig. 4 www.irf.com 20CTQ... Series Bulletin PD-20056 rev. A 12/01 1000 ReverseCurrent - I (mA) R 1000 T =175°C J 10 150°C 125°C 1 100°C .1 75°C 50°C .01 25°C .001 .0001 0 ReverseVoltage- VR(V) 10 T =175°C J Fig. 2 - Typical Values Of Reverse Current Vs. Reverse Voltage (Per Leg) T =125°C J 1000 T = 25°C J 1 .1 0 10 15 20 25 30 35 40 45 5 JunctionCapacitance - C (pF) T InstantaneousForwardCurrent - I (A) F 100 100 .2 .4 .6 .8 1 1.2 1.4 T =25°C J 100 0 1.6 1.8 10 ForwardVoltageDrop- V (V) FM 20 30 40 50 ReverseVoltage- V (V) R Fig. 1 - Max. Forward Voltage Drop Characteristics (Per Leg) Fig. 3 - Typical Junction Capacitance Vs. Reverse Voltage (Per Leg) Thermal Impedance- ZthJC(°C/W ) 10 1 D=0.50 D=0.33 D=0.25 D=0.17 D=0.08 P DM t 1 t2 .1 Notes: 1. Dutyfactor D= t1/ t2 .01 SinglePulse (Thermal Resistance) .001 .00001 .0001 .001 2. PeakT =P xZ +T J DM thJC C .01 .1 1 10 100 t , Rectangular PulseDuration(Seconds) 1 Fig. 4 - Max. Thermal Impedance ZthJC Characteristics (Per Leg) www.irf.com 3 20CTQ... Series Bulletin PD-20056 rev. A 12/01 9 20CTQ RthJC (DC) =3.25°C/W 175 AveragePower Loss- (W atts) AllowableCaseTemperature- (°C) 180 170 165 160 DC 155 150 D=0.08 8 D=0.17 D=0.25 7 D=0.33 6 D=0.50 5 DC 4 RMSLimit 3 2 1 145 0 5 10 0 0 15 5 10 15 AverageForwardCurrent - I (A) F(AV) AverageForwardCurrent - 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) 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 D UT IRFP460 R g = 25 oh m C URRE NT M O N ITO R H IG H-SPE ED SW ITC H FRE E-W H EEL D IO D E + V d = 25 V olt 40H FL40 S02 Fig. 8 - Unclamped Inductive Test Circuit 4 www.irf.com 20CTQ... Series Bulletin PD-20056 rev. A 12/01 Outline Table 10.54 (0.41) MAX. 3.78 (0.15) 3.54 (0.14) 1.32 (0.05) 1.22 (0.05) DIA. 6.48 (0.25) 6.23 (0.24) 2.92 (0.11) 2.54 (0.10) TERM 2 15.24 (0.60) 14.84 (0.58) 2° 1 2 3 14.09 (0.55) 3.96 (0.16) 13.47 (0.53) 3.55 (0.14) 0.10 (0.004) 2.04 (0.080) MAX. 1.40 (0.05) 2.89 (0.11) 1.15 (0.04) 2.64 (0.10) 0.94 (0.04) BASE COMMON CATHODE 2 0.69 (0.03) 1 1 2 3 0.61 (0.02) MAX. 4.57 (0.18) 2 3 ANODE COMMON ANODE CATHODE 1 2 4.32 (0.17) Conform to JEDEC outline TO-220AB Dimensions in millimeters and (inches) 5.08 (0.20) REF. 4.69 (0.18) 4.20 (0.16) 10.16 (0.40) REF. 1.32 (0.05) 1.22 (0.05) 6.47 (0.25) 15.49 (0.61) 93° 6.18 (0.24) 14.73 (0.58) 5.28 (0.21) 2.61 (0.10) 4.78 (0.19) 2.32 (0.09) 0.55 (0.02) 8.89 (0.35) 3X BASE COMMON CATHODE REF. 1.40 (0.055) 1.14 (0.045) 2X 0.46 (0.02) 0.93 (0.37) MINIMUM RECOMMENDED FOOTPRINT 0.69 (0.27) 11.43 (0.45) 2 1 1 2 3 4.57 (0.18) 3 ANODE COMMON ANODE CATHODE 1 2 4.32 (0.17) 2 8.89 (0.35) 17.78 (0.70) 0.61 (0.02) MAX. 5.08 (0.20) REF. 3.81 (0.15) 2.08 (0.08) Conform to JEDEC outline D2Pak (SMD-220) Dimensions in millimeters and (inches) www.irf.com 2X 2.54 (0.10) 2X 5 20CTQ... Series Bulletin PD-20056 rev. A 12/01 Outline Table Modified JEDEC outline TO-262 Dimensions in millimeters and (inches) BASE COMMON CATHODE 2 1 2 3 ANODE COMMON ANODE CATHODE 1 2 Marking Information EXAMPLE: THIS IS A 20CTQ045-1 LOT CODE 1789 ASSEMBLED ON WW 19, 1999 IN THE ASSEMBLY LINE "C" INTERNATIONAL RECTIFIER LOGO ASSEMBLY LOT CODE 6 PART NUMBER DATE CODE YEAR 7 = 1999 WEEK 19 LINE C www.irf.com 20CTQ... Series Bulletin PD-20056 rev. A 12/01 Tape & Reel Information TRR 1.60 (0.063) 1.50 (0.059) 4.10 (0.161) 3.90 (0.153) FEED DIR ECTION 1.60 (0.063) 1.50 (0.059) 1.85 (0.073) DIA. 0.368 (0.0145) 0.342 (0.0135) 11.60 (0.457) 1.65 (0.065) 11.40 (0.449) 15.42 (0.609) 15.22 (0.601) TRL 1.75 (0.069) 10.90 (0.429) 1.25 (0.049) 10.70 (0.421) 24.30 (0.957) 23.90 (0.941) DIA. 4.72 (0.186) 16.10 (0.634) 4.52 (0.178) 15.90 (0.626) FEED DIRECTION 13.50 (0.532) 26.40 (1.039) 12.80 (0.504) DIA. 24.40 (0.961) SMD-220 Tape & Reel When ordering, indicate the part number, part orientation, and the quantity. Quantities are in multiples of 800 pieces per reel for both TRL and TRR. 60 (2.362) 360 (14.173) D IA . MIN . DIA. MAX. Dimensions in millimeters and (inches) Ordering Information Table Device Code www.irf.com 20 C T Q 045 -1 1 2 3 4 5 6 1 - Essential Part Number 2 - Common Cathode 3 - T = TO-220 4 - Q = Schottky Q Series 035 = 35V 5 - Voltage Rating 040 = 40V 6 - S = D2Pak 045 = 45V 6 - -1 = TO-262 7 20CTQ... Series Bulletin PD-20056 rev. A 12/01 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. 12/01 8 www.irf.com