100V 5A Automotive Schottky in a TO-277A Footprint
The STPS5H100SFY is a 100 V, 5 A Schottky rectifier from STMicroelectronics, housed in the TO-277A (SMPC) surface-mount package. It is qualified to AEC-Q101, meaning it has passed the automotive-grade stress tests for temperature cycling, ESD, and reliability screening required for under-hood and chassis-domain electronics. The junction temperature range extends to 175°C, which gives headroom above the 150°C ceiling of many standard Schottky diodes — useful when the diode sits near a hot engine block or in a high-side reverse-protection circuit that sees continuous conduction.
Switching Speed and Leakage at the Operating Point
Rated as a fast-recovery device with recovery time under 500 ns at forward currents above 200 mA, this Schottky's majority-carrier construction inherently avoids the stored-charge tail of a PN junction diode. The 8 µA reverse leakage at 100 V is the standby loss floor — expect it to rise with junction temperature, so the thermal design should budget for the leakage at 125°C, not at 25°C. The 5 A average rectified rating is continuous, not surge. For repetitive peak currents or inrush events, the datasheet's non-repetitive peak current curve governs the safe-operating area. The TO-277A package's exposed pad (SMPC) is the primary thermal path — the PCB copper area under the pad sets the junction-to-ambient thermal resistance.
Active Lifecycle and Sourcing Reality
The ECOPACK®2 series designation means the package meets ST's halogen-free and antimony-free material standards, which simplifies compliance declarations for automotive OEMs.