Schottky Barrier Rectifier DST2045AX, 20A, 45V, Axial, Single DST2045AX RoHS Pb Description Littelfuse DST series Ultra Low VF Schottky Barrier Rectifier is designed to meet the general requirements of commercial and industry applications by providing high temperature, low leakage and lower VF products. It is suitable for high frequency switching mode power supply, free-wheeling diodes and polarity protection diodes. Features Pin out ltra low forward voltage • U drop • High frequency operation Anode • High junction temperature capability Cathode • Guard ring for enhanced ruggedness and long term reliability • Single die in P600 package Applications • S witching mode power supply • Free-Wheeling diodes • Polarity Protection Diodes • DC/DC converters Maximum Ratings Parameters Symbol Test Conditions Max Unit Peak Inverse Voltage VRWM - 45 V Average Forward Current (per device) IF(AV) 50% duty cycle @TA =25°C rectangular wave form 20 A Peak One Cycle Non-Repetitive Surge Current (per leg) IFSM 8.3 ms, half Sine pulse 250 A Symbol Test Conditions Max Unit VF1 @20A, Pulse, TJ = 25 °C 0.58 VF2 @20A, Pulse, TJ = 125 °C 0.50 IR1 @VR = rated VR TJ = 25 °C 1.2 IR2 @VR = rated VR TJ = 125 °C 35 Electrical Characteristics Parameters Forward Voltage Drop (per leg) * Reverse Current (per leg) * * Pulse Width < 300μs, Duty Cycle <2% V mA ©2016 Littelfuse, Inc Specifications are subject to change without notice. Revised:02/03/16 Schottky Barrier Rectifier DST2045AX, 20A, 45V, Axial, Single Thermal-Mechanical Specifications Parameters Symbol Test Conditions Max Unit Junction Temperature TJ -55 to +150 °C Storage Temperature Tstg -55 to +150 °C Thermal Resistance Junction to Ambient RthJA 55 °C/W Approximate Weight wt 2.24 g Case Style DC operation P600 Figure 1: Typical Forward Characteristics Figure 2: Typical Reverse Characteristics ºC ºC ºC ºC Figure 3: Typical Junction Capacitance ºC ©2016 Littelfuse, Inc Specifications are subject to change without notice. Revised:02/03/16 Schottky Barrier Rectifier DST2045AX, 20A, 45V, Axial, Single Dimensions- P600 D C A A B DS T 20 45 AX LF YY WW L Millimeters Min Max Min Max A 1.000 - 25.40 - B 0.340 0.360 8.60 9.10 C 0.048 0.052 1.20 1.30 D 0.340 0.360 8.60 9.10 Packing Options Part Numbering and Marking System DST2045AX LF YYWWL Inches Dimensions = Device Type = Ultralow VF = Forward Current (20A) = Reverse Voltage (45V) = Package Type = Littelfuse = Year = Week = Lot Number Part Number Marking Packing Mode M.O.Q DST2045AX DST2045AX 500pcs / reel 2500 Carrier Tape & Reel Specification A Z 90°±5° D0 D0 E W L1 D T Max A 9.5 10.5 B 50.9 53.9 D0 B E Millimeters Min 330.0 typ D B L2 Symbol 30.1 30.9 E 0.8 max L1 1.0 max 1.0 max L2 T 5.6 6.4 W 78.0 81.0 Z 1.2 max ©2016 Littelfuse, Inc Specifications are subject to change without notice. Revised:02/03/16