18TQ...PbF Series Vishay High Power Products Schottky Rectifier, 18 A FEATURES 175 C T operation J Base Low forward voltage drop Pb-free cathode Available 2 High frequency operation RoHS* High purity, high temperature epoxy COMPLIANT encapsulation for enhanced mechanical strength and moisture resistance Guard ring for enhanced ruggedness and long term 1 3 reliability TO-220AC Cathode Anode Lead (Pb)-free (PbF suffix) Designed and qualified for industrial level DESCRIPTION PRODUCT SUMMARY The 18TQ...PbF Schottky rectifier series has been optimized I 18 A for low reverse leakage at high temperature. The proprietary F(AV) barrier technology allows for reliable operation up to 175 C V 35 to 50 V R junction temperature. Typical applications are in switching power supplies, converters, freewheeling diodes, and reverse battery protection. MAJOR RATINGS AND CHARACTERISTICS SYMBOL CHARACTERISTICS VALUES UNITS I Rectangular waveform 18 A F(AV) V Range 35 to 50 V RRM I t = 5 s sine 1800 A FSM p V 18 Apk, T = 125 C 0.53 V F J T Range - 55 to 175 C J VOLTAGE RATINGS PARAMETER SYMBOL 18TQ035PbF 18TQ040PbF 18TQ045PbF 18TQ050PbF UNITS Maximum DC reverse voltage V R 35 40 45 50 V Maximum working peak reverse voltage V RWM ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL TEST CONDITIONS VALUES UNITS Maximum average forward current I 50 % duty cycle at T = 149 C, rectangular waveform 18 F(AV) C See fig. 5 A Maximum peak one cycle Following any rated load 5 s sine or 3 s rect. pulse 1800 non-repetitive surge current I condition and with rated FSM 10 ms sine or 6 ms rect. pulse 390 See fig. 7 V applied RRM Non-repetitive avalanche energy E T = 25 C, I = 3.6 A, L = 3.7 mH 24 mJ AS J AS Current decaying linearly to zero in 1 s Repetitive avalanche current I 3.6 A AR Frequency limited by T maximum V = 1.5 x V typical J A R * Pb containing terminations are not RoHS compliant, exemptions may apply Document Number: 94149 For technical questions, contact: diodes-tech vishay.com www.vishay.com Revision: 16-Apr-08 1 18TQ...PbF Series Schottky Rectifier, 18 A Vishay High Power Products ELECTRICAL SPECIFICATIONS PARAMETER SYMBOL TEST CONDITIONS VALUES UNITS 18 A 0.60 T = 25 C J 36 A 0.72 Maximum forward voltage drop (1) V V FM See fig. 1 18 A 0.53 T = 125 C J 36 A 0.67 T = 25 C 2.5 Maximum reverse leakage current J (1) I V = Rated V mA RM R R See fig. 2 T = 125 C 25 J Maximum junction capacitance C V = 5 V (test signal range 100 kHz to 1 MHz) 25 C 1400 pF T R DC Typical series inductance L Measured lead to lead 5 mm from package body 8 nH S Maximum voltage rate of change dV/dt Rated V 10 000 V/s R Note (1) Pulse width < 300 s, duty cycle < 2 % THERMAL - MECHANICAL SPECIFICATIONS PARAMETER SYMBOL TEST CONDITIONS VALUES UNITS Maximum junction and storage T , T - 55 to 175 C J Stg temperature range Maximum thermal resistance, DC operation R 1.50 thJC junction to case See fig. 4 C/W Typical thermal resistance, R Mounting surface, smooth and greased 0.50 thCS case to heatsink 2g Approximate weight 0.07 oz. minimum 6 (5) kgf cm Mounting torque (lbf in) maximum 12 (10) Marking device Case style TO-220AC 18TQ050 www.vishay.com For technical questions, contact: diodes-tech vishay.com Document Number: 94149 2 Revision: 16-Apr-08