100 V, 2 A Schottky — parametric fit
The STPS2H100UY: A 100 V reverse voltage and 2 A average rectified current define the operating envelope. Reverse leakage is specified at 1 µA at 100 V — a useful benchmark for low-quiescent or battery-backed circuits where leakage current eats into standby budget.
Fast recovery ≤500 ns — switching speed matters
Rated for fast recovery ≤500 ns at >200 mA forward current. This recovery time is short enough for automotive DC-DC converters and switch-mode power supplies operating in the tens to low hundreds of kHz, where reverse-recovery losses in a standard pn diode would dominate.
175°C junction — under-hood thermal budget
Q Automotive series — AEC-Q101 qualified
Part of the Q Automotive series, which carries AEC-Q101 qualification for automotive-grade reliability. The laser etch and date-code traceability should match ST's automotive plant marking standard — verify the font and lot code against the manufacturer's published marking diagram if sourcing outside the authorized chain.