30 V, 7.5 A per diode — what this Schottky pair delivers
The STPS15L30CB from STMicroelectronics is a dual Schottky rectifier in a common-cathode configuration, packaged in a DPAK (TO-252) for surface-mount assembly. The 30 V reverse voltage rating suits low-voltage power rails, OR-ing diodes, and secondary-side rectification in 12 V or 5 V output supplies. The Fast Recovery spec (≤500 ns, >200 mA) confirms this is a switching diode, not a 50/60 Hz line rectifier.
STMicroelectronics lists the STPS15L30CB as obsolete. A pin-compatible replacement from the same STPS15 family may exist — the base product number STPS15 covers multiple voltage and configuration variants in the DPAK footprint — but no specific cross-reference is documented here. For a production run, qualify a substitute before committing the line.
DPAK footprint, common-cathode pair — board-level fit
The DPAK (TO-252) package has three terminals: two anode pins and a common cathode on the tab. The common-cathode configuration is standard for center-tapped full-wave rectifiers and for paralleling diodes to increase current capacity — though with 7.5 A per diode and a 150°C maximum junction temperature, thermal management through the PCB copper is essential at continuous full load. The surface-mount DPAK footprint is widely used and second-sourceable across manufacturers.