STPS20SM120S Datasheet 120 V power Schottky rectifier A Features K High current capability A Avalanche rated K Low forward voltage drop K High frequency operation Insulated package TO220FPAB: A K Insulated voltage: 2000 V sine A RMS A K A ECOPACK 2 compliant TO-220FPAB TO-220AB Applications Switching diode SMPS DC/DC converter LED lighting Notebook adapter Description This Schottky diode is suited for high frequency switch mode power supply. Packed in TO-220AB and TO-220FPAB, the STPS20SM120S is optimized for use in notebook, game station and desktop adapters, providing in these applications a good Product status efficiency at both low and high load. STPS20SM120S Product summary I 20 A F(AV) V 120 V RRM T (max) 150 C j V (typ) 0.65 V F DS8944 - Rev 4 - November 2018 www.st.com For further information contact your local STMicroelectronics sales office.STPS20SM120S Characteristics 1 Characteristics Table 1. Absolute ratings (limiting values at 25 C, unless otherwise specified, anode terminals short circuited) Symbol Parameter Value Unit V Repetitive peak reverse voltage 120 V RRM I Forward rms current 50 A F(RMS) I Average forward current = 0.5, square wave 20 A F(AV) I Surge non repetitive forward current t = 10 ms sinusoidal 220 A FSM p P Repetitive peak avalanche power t = 10 s, T = 125 C 900 W ARM p j T Storage temperature range -65 to +175 C stg (1) T Maximum operating junction temperature +150 C j 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 Value Unit TO-220AB 1.55 R Junction to case C/W th(j-c) TO-220FPAB 4 For more information, please refer to the following application note : AN5088 : Rectifiers thermal management, handling and mounting recommendations Table 3. Static electrical characteristics (anode terminals short circuited) Symbol Parameter Test conditions Min. Typ. Max. Unit T = 25 C - 40 210 A j (1) I Reverse leakage current V = V R R RRM T = 125 C - 15 40 mA j T = 125 C I = 5 A - 0.49 0.54 j F T = 25 C - 0.75 j I = 10 A F (2) V T = 125 C Forward voltage drop - 0.57 0.62 V F j T = 25 C - 0.89 j I = 20 A F T = 125 C - 0.65 0.72 j 1. Pulse test: t = 5 ms, < 2% p 2. Pulse test: t = 380 s, < 2% p To evaluate the conduction losses, use the following equation: 2 P = 0.56 x I + 0.008 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 DS8944 - Rev 4 page 2/11