20TQ... Series Vishay High Power Products Schottky Rectifier, 20 A FEATURES • 150 °C TJ operation Base cathode 2 • Low forward voltage drop • High frequency operation • High purity, high temperature epoxy encapsulation for enhanced mechanical strength and moisture resistance TO-220AC • Guard ring for enhanced ruggedness and long term reliability 3 Anode 1 Cathode • Designed and qualified for industrial level DESCRIPTION The 20TQ... Schottky rectifier series has been optimized for very low forward voltage drop, with moderate leakage. The proprietary barrier technology allows for reliable operation up to 150 °C junction temperature. Typical applications are in switching power supplies, converters, freewheeling diodes, and reverse battery protection. PRODUCT SUMMARY IF(AV) 20 A VR 35 to 45 V MAJOR RATINGS AND CHARACTERISTICS SYMBOL CHARACTERISTICS IF(AV) Rectangular waveform VRRM Range IFSM tp = 5 µs sine VF 20 Apk, TJ = 125 °C TJ Range VALUES UNITS 20 A 35 to 45 V 1800 A 0.51 V - 55 to 150 °C VOLTAGE RATINGS PARAMETER Maximum DC reverse voltage Maximum working peak reverse voltage SYMBOL VR VRWM 20TQ035 20TQ040 20TQ045 UNITS 35 40 45 V ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL TEST CONDITIONS VALUES UNITS Maximum average forward current See fig. 5 IF(AV) Maximum peak one cycle non-repetitive surge current See fig. 7 IFSM Non-repetitive avalanche energy EAS TJ = 25 °C, IAS = 4 A, L = 3.4 mH 27 mJ Repetitive avalanche current IAR Current decaying linearly to zero in 1 µs Frequency limited by TJ maximum VA = 1.5 x VR typical 4 A Document Number: 93278 Revision: 25-Jun-08 50 % duty cycle at TC = 116 °C, rectangular waveform 5 µs sine or 3 µs rect. pulse 10 ms sine or 6 ms rect. pulse Following any rated load condition and with rated VRRM applied For technical questions, contact: [email protected] 20 1800 A 400 www.vishay.com 1 20TQ... Series Vishay High Power Products Schottky Rectifier, 20 A ELECTRICAL SPECIFICATIONS PARAMETER SYMBOL TEST CONDITIONS 20 A Maximum forward voltage drop See fig. 1 VFM (1) TJ = 25 °C 40 A 20 A TJ = 125 °C 40 A Maximum reverse leakage curent See fig. 2 IRM (1) TJ = 25 °C VR = Rated VR TJ = 125 °C Maximum junction capacitance CT VR = 5 VDC, (test signal range 100 kHz to 1 MHz) 25 °C Typical series inductance LS Measured lead to lead 5 mm from package body Maximum voltage rate of change dV/dt Note (1) Pulse width < 300 µs, duty cycle < 2 % Rated VR VALUES UNITS 0.57 0.73 V 0.51 0.67 2.7 mA 105 1400 pF 8.0 nH 10 000 V/µs VALUES UNITS - 55 to 150 °C THERMAL - MECHANICAL SPECIFICATIONS PARAMETER SYMBOL Maximum junction and storage temperature range TEST CONDITIONS TJ, TStg Maximum thermal resistance, junction to case RthJC DC operation See fig. 4 1.50 Typical thermal resistance, case to heatsink RthCS Mounting surface, smooth and greased 0.50 2 Approximate weight Mounting torque °C/W g 0.07 oz. minimum 6 (5) kgf · cm maximum 12 (10) (lbf · in) 20TQ035 Marking device Case style TO-220AC 20TQ040 20TQ045 www.vishay.com 2 For technical questions, contact: [email protected] Document Number: 93278 Revision: 25-Jun-08 20TQ... Series Schottky Rectifier, 20 A Vishay High Power Products 1000 1000 IR - Reverse Current (mA) IF - Instantaneous Forward Current (A) TJ = 150 °C 100 10 TJ = 150 °C TJ = 125 °C TJ = 25 °C 1 100 TJ = 125 °C 10 TJ = 100 °C 1 TJ = 75 °C TJ = 50 °C 0.1 0.01 TJ = 25 °C 0.001 0.1 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 0 1.8 5 10 VFM - Forward Voltage Drop (V) 15 20 25 30 35 40 45 VR - Reverse Voltage (V) Fig. 1 - Maximum Forward Voltage Drop Characteristics Fig. 2 - Typical Values of Reverse Current vs. Reverse Voltage CT - Junction Capacitance (pF) 10 000 1000 TJ = 25 °C 100 0 10 20 30 40 50 VR - Reverse Voltage (V) ZthJC - Thermal Impedance (°C/W) Fig. 3 - Typical Junction Capacitance vs. Reverse Voltage 10 1 PDM 0.1 t1 0.01 0.001 0.00001 D = 0.50 D = 0.33 D = 0.25 D = 0.17 D = 0.08 Single pulse (thermal resistance) 0.0001 0.001 0.01 0.1 t2 Notes: 1. Duty factor D = t1/t2 . 2. Peak TJ = PDM x ZthJC + TC 1 10 . 100 t1 - Rectangular Pulse Duration (s) Fig. 4 - Maximum Thermal Impedance ZthJC Characteristics Document Number: 93278 Revision: 25-Jun-08 For technical questions, contact: [email protected] www.vishay.com 3 20TQ... Series Vishay High Power Products Schottky Rectifier, 20 A 18 20TQ RthJC (DC) = 1.50 °C/W D = 0.08 D = 0.17 D = 0.25 D = 0.33 D = 0.50 16 Average Power Loss (W) Allowable Case Temperature (°C) 155 145 135 DC 125 14 12 10 RMS limit 8 DC 6 4 2 115 0 0 5 10 15 20 30 25 5 0 10 15 20 25 30 IF(AV) - Average Forward Current (A) IF(AV) - Average Forward Current (A) Fig. 5 - Maximum Allowable Case Temperature vs. Average Forward Current Fig. 6 - Forward Power Loss Characteristics IFSM - Non-Repetitive Surge Current (A) 10 000 1000 At any rated load condition and with rated VRRM applied following surge 100 100 10 1000 10 000 tp - Square Wave Pulse Duration (µs) Fig. 7 - Maximum Non-Repetitive Surge Current L D.U.T. IRFP460 Rg = 25 Ω Current monitor High-speed switch Freewheel diode + Vd = 25 V 40HFL40S02 Fig. 8 - Unclamped Inductive Test Circuit www.vishay.com 4 For technical questions, contact: [email protected] Document Number: 93278 Revision: 25-Jun-08 20TQ... Series Schottky Rectifier, 20 A Vishay High Power Products ORDERING INFORMATION TABLE Device code 20 T Q 045 - 1 2 3 4 5 1 - 2 - Current rating (20 = 20 A) Package: T = TO-220 3 - Schottky “Q” series 4 - Voltage ratings 5 - None = Standard production 035 = 35 V 040 = 40 V 045 = 45 V PbF = Lead (Pb)-free Tube standard pack quantity: 50 pieces LINKS TO RELATED DOCUMENTS Dimensions http://www.vishay.com/doc?95221 Part marking information http://www.vishay.com/doc?95224 Document Number: 93278 Revision: 25-Jun-08 For technical questions, contact: [email protected] www.vishay.com 5 Legal Disclaimer Notice Vishay Disclaimer All product specifications and data are subject to change without notice. Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively, “Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained herein or in any other disclosure relating to any product. Vishay disclaims any and all liability arising out of the use or application of any product described herein or of any information provided herein to the maximum extent permitted by law. The product specifications do not expand or otherwise modify Vishay’s terms and conditions of purchase, including but not limited to the warranty expressed therein, which apply to these products. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document or by any conduct of Vishay. The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications unless otherwise expressly indicated. Customers using or selling Vishay products not expressly indicated for use in such applications do so entirely at their own risk and agree to fully indemnify Vishay for any damages arising or resulting from such use or sale. Please contact authorized Vishay personnel to obtain written terms and conditions regarding products designed for such applications. Product names and markings noted herein may be trademarks of their respective owners. Document Number: 91000 Revision: 18-Jul-08 www.vishay.com 1