Why the AEC-Q101 grade matters for your BOM
The STPS5S100SFY is an automotive-grade Schottky rectifier — the AEC-Q101 qualification is the gate spec that decides whether this part lands in an ECU, a body controller, or an ADAS power supply, versus staying in an industrial or consumer BOM. Without that grade, a production line that requires automotive PPAP documentation would reject the part at the incoming inspection gate.
100 V / 5 A — sizing the power stage
Rated 100 V reverse at 5 A average rectified current. The 820 mV forward drop at 5 A sets the conduction loss — at 5 A continuous, that is 4.1 W dissipated in the die.