STPS3170 Datasheet 170 V, 3 A power Schottky rectifier Features Negligible switching losses High junction temperature capability Very small conduction losses Low leakage current Avalanche rated ECOPACK2 component Applications Switching diode SMPS DC / DC converter Telecom power Description The STPS3170 is a 170 V Schottky rectifier suited for switch mode power supplies and high frequency DC to DC converters. Packaged in SMA Flat, SMA Flat Notch and SMB Flat, the STPS3170 is ideal for use in low voltage, high frequency inverters, freewheeling and polarity protection. Also ideal for all LED lighting applications where efficiency and space constraint are required. Product status STPS3170 Product summary Symbol Value I F(AV) 3 A V 170 V RRM T 175 C j(max.) V 0.63 V F(typ.) DS10645 - Rev 2 - October 2019 www.st.com For further information contact your local STMicroelectronics sales office.STPS3170 Characteristics 1 Characteristics Table 1. Absolute ratings (limiting values at 25 C, unless otherwise specified) Symbol Parameter Value Unit V Repetitive peak reverse voltage 170 V RRM V Repetitive peak reverse voltage, T = -40 C 160 V RRM j I Forward rms current 15 A F(RMS) T = 130 C SMA Flat, SMA Flat Notch L Average forward current, = 0.5, square I 3 A F(AV) wave SMB Flat T = 140 C L SMA Flat, SMA Flat Notch 75 I t = 10 ms sinusoidal Surge non repetitive forward current A FSM p SMB Flat 80 P t = 10 s, T = 125 C Repetitive peak avalanche power 210 W ARM p j T Storage temperature range -65 to +175 C stg (1) T +175 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 SMA Flat, SMA Flat Notch 20 R Junction to lead C/W th(j-l) SMB Flat 15 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 - 4.0 A j (1) I Reverse leakage current V = V R RRM R T = 125 C - 0.73 4.0 mA j T = 25 C - 0.82 j I = 3 A F T = 125 C - 0.63 0.67 j (2) V Forward voltage drop V F T = 25 C - 0.89 j I = 6 A F T = 125 C - 0.70 0.75 j 1. Pulse test: t = 5 ms, < 2% p 2. Pulse test: t = 380 s, < 2% p 2 To evaluate the conduction losses, use the following equation: P = 0.59 x I + 0.027 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 DS10645 - Rev 2 page 2/13