What this dual Schottky does in the power stage
The STPS1545CG-TR is a dual common-cathode Schottky rectifier from STMicroelectronics, pairing two 7.5 A diodes (total 15 A average) in a single D2PAK (TO-263AB) surface-mount package. Each diode is rated for 45 V reverse voltage with a forward drop of 570 mV at 7.5 A — low enough to keep conduction losses manageable in 12 V and 24 V rail rectification, OR-ing, and freewheeling circuits.
Package and mounting — D2PAK practicalities
Surface-mount D2PAK (TO-263-3, two leads plus tab) with the tab as the common cathode. The Tape & Reel suffix (-TR) means it ships on a 13-inch reel — standard for pick-and-place.
STMicroelectronics lists the STPS1545CG-TR as Active (current product status).