Schottky rectifier for low-voltage, high-current rectification
The STPS8L30H is a Schottky barrier rectifier from STMicroelectronics, rated for 30 V DC reverse voltage and 8 A average rectified current.
30 V, 8 A — the operating envelope
The 30 V reverse voltage rating suits low-voltage rails. The 8 A average current handles moderate loads; the 490 mV forward drop at that current means the junction stays cooler than a standard PN diode at the same current. Reverse leakage is specified at 1 mA at 30 V, and the maximum junction temperature is 150 °C.
I-PAK through-hole — board-mounting reality
The STPS8L30H comes in an I-PAK through-hole package. Three short leads — the tab is the cathode. Through-hole mounting means it survives rework cycles and high-vibration environments better than an SMD equivalent, but the lead pitch and hole pattern must match the PCB layout. No exposed pad for heatsinking; the tab conducts heat into the board copper.
The STPS8L30H is listed as obsolete. If the BOM calls for this exact part number, the window for new-stock procurement is closed; plan for a last-time-buy or a validated substitute.