Schottky Barrier Rectifier DST1040S, 10A, 40V, TO-277B, Single DST1040S 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 • Ultra low forward voltage drop • Guard ring for enhanced ruggedness and long term reliability • High frequency operation K Cathode Anode Anode • Single die in TO-277B Package • High junction temperature capability 1 2 Applications • S witching mode power supply • Free-Wheeling diodes • Polarity Protection Diodes • DC/DC converters Maximum Ratings Parameters Symbol Peak Inverse Voltage Test Conditions Max Unit VRWM - 45 V Average Forward Current (per device) * IF(AV) 50% duty cycle @TM =121°C rectangular wave form 10 A Peak One Cycle Non-Repetitive Surge Current (per leg) IFSM 8.3 ms, half Sine pulse 150 A * Mounted on 30 mm x 30 mm pad areas aluminum PCB Electrical Characteristics Parameters Symbol Max @5A, Pulse, TJ = 25 °C 0.43 - 0.49 0.57 @5A, Pulse, TJ = 125 °C 0.33 - @10A, Pulse, TJ = 125 °C 0.41 - IR1 @VR = rated VR, TJ = 25 °C 0.017 0.80 IR2 @VR = rated VR, TJ = 125 °C 15 100 CT @VR = 5V, TC = 25 °C, fSIG = 1MHz 639 - Forward Voltage Drop (per leg) * VF2 Junction Capacitance (per leg) * Pulse Width < 300μs, Duty Cycle <2% Typ @10A, Pulse, TJ = 25 °C VF1 Reverse Current (per leg) * Test Conditions Unit V mA pF ©2016 Littelfuse, Inc Specifications are subject to change without notice. Revised:02/03/16 Schottky Barrier Rectifier DST1040S, 10A, 40V, TO-277B, Single Thermal-Mechanical Specifications Parameters Symbol Test Conditions Max Unit °C Junction Temperature TJ -55 to +150 Storage Temperature Tstg -55 to +150 °C Typical Thermal Resistance RthJM 4 °C/W Approximate Weight wt 0.08 g Case Style DC operation TO-277B Mounted on 30 mm x 30 mm aluminum PCB; thermal resistance RthJM - junction to mount Figure 1: Typical Forward Characteristics Figure 2: Typical Reverse Characteristics Figure 3: Typical Junction Capacitance ©2016 Littelfuse, Inc Specifications are subject to change without notice. Revised:02/03/16 Schottky Barrier Rectifier DST1040S, 10A, 40V, TO-277B, Single Dimensions-TO-277B D Symbol C A E M L K H G J B I F Millimeters Min Typ Max A 6.30 6.50 6.70 B 3.88 3.98 4.08 C 0.95 1.10 1.25 D 0.20 0.25 0.30 E 5.28 5.38 5.48 F 3.40 3.55 3.70 G 2.90 3.05 3.20 H 1.74 1.84 1.94 I 1.10 1.25 1.40 J - 0.85 - K 1.70 1.80 1.90 L 0.85 0.90 0.95 M - 0.56 - D Part Numbering and Marking System A E M H L Packing Options DST1040S 6 Part Number B Marking Packing Mode M.O.Q DST1040S DST1040S 5000pcs / Reel 5000 LF YYWWL DST 10 40 S LF YY WW L = Device Type = Forward Current (10A) = Reverse Voltage (40V) = Package Type = Littelfuse = Year = Week = Lot Number I Carrier Tape & Reel Specification Symbol Millimeters Min Max A 4.28 4.48 B 6.80 7.00 d 1.40 1.60 d1 - 1.50 E 1.65 1.85 F 7.40 7.60 P 7.90 8.10 P0 3.90 4.10 W 15.70 16.30 ©2016 Littelfuse, Inc Specifications are subject to change without notice. Revised:02/03/16