STPS3L40 Datasheet 40 V, 3 A low drop Schottky rectifier Features Negligible switching losses Low forward voltage drop Low thermal resistance Avalanche rated ECOPACK2 component Applications Telecom power supply Set-top box power supply TV power supply Battery charger Description Schottky rectifier suited for switch mode power supplies and high frequency DC to DC converters. Packaged in SMB Flat Notch, SMB Flat and SMC, the STPS3L40 is ideal for surface mounting and used in DC/DC chargers. Product status STPS3L40 Product summary Symbol Value I F(AV) 3 A V 40 V RRM T 150 C j(max.) V 0.40 V F(typ.) DS1947 - Rev 5 - January 2020 www.st.com For further information contact your local STMicroelectronics sales office.STPS3L40 Characteristics 1 Characteristics Table 1. Absolute ratings (limiting values at 25 C, unless otherwise specified) Symbol Parameter Value Unit V Repetitive peak reverse voltage 40 V RRM T = 120 C SMB Flat, SMB Flat Notch L Average forward current, = 0.5, square I 3 A F(AV) wave T = 115 C SMC L I t = 10 ms sinusoidal Surge non repetitive forward current 75 A FSM p P Repetitive peak avalanche power t = 10 s, T = 125 C 95 W ARM p j T Storage temperature range -65 to +150 C stg (1) T +150 C j Maximum operating junction temperature 1. (dP /dT ) < (1/R ) condition to avoid thermal runaway for a diode on its own heatsink. tot j th(j-a) Table 2. Thermal resistance parameter Symbol Parameter Max. value Unit SMB Flat, SMB Flat Notch 15 R Junction to lead C/W th(j-l) SMC 18 For more information, please refer to the following application note : AN5088 : Rectifiers thermal management, handling and mounting recommendations Table 3. Static electrical characteristics Symbol Parameter Test conditions Min. Typ. Max. Unit T = 25 C - 100 A j (1) I V = V Reverse leakage current R R RRM T = 125 C - 16 40 mA j T = 25 C - 0.50 j I = 3 A F T = 125 C - 0.40 0.44 j (1) V Forward voltage drop V F T = 25 C - 0.62 j I = 6 A F T = 125 C - 0.52 0.58 j 1. Pulse test: t = 380 s, < 2% p To evaluate the conduction losses, use the following equation: 2 P = 0.30 x I + 0.047 x I F(AV) F (RMS) For more information, please refer to the following application notes related to the power losses : AN604: Calculation of conduction losses in a power rectifier AN4021: Calculation of reverse losses on a power diode DS1947 - Rev 5 page 2/13