Dual Schottky in a TO-220 for OR-ing and rectification
The STPS30L30CT is a dual Schottky rectifier in a common-cathode configuration, rated 30 V reverse voltage and 15 A average rectified current per diode. Packaged in a through-hole TO-220-3, it mounts into standard 0.100-inch pitch holes on a single-sided or double-sided board — the exposed tab is the common cathode and carries the bulk of the heat to the copper pour or a clip-on heatsink. The forward voltage is 460 mV max at 15 A, keeping conduction losses low in high-current OR-ing, reverse-polarity protection, or output rectification stages. Reverse leakage is 1.5 mA at 60 V — the 30 V rating leaves margin against inductive kickback in a 24 V rail.
Lifecycle reality — obsolete, sourced per RFQ
STMicroelectronics lists the STPS30L30CT as Obsolete. No official successor is recorded; the part is available through independent surplus and broker channels. Sourcing is confirmed per RFQ — quantities and pricing are quoted at order time, not carried as live stock. The part is ROHS3 compliant, so it meets current European and global restriction-of-hazardous-substances requirements for new builds and repairs.
Junction temperature and thermal budget
Maximum junction temperature is 150 °C. At 15 A per diode with a 460 mV drop, each die dissipates about 6.9 W — the TO-220 tab must be soldered to a sufficient copper area or clamped to a heatsink to keep Tj below the limit under worst-case ambient. The switching speed is Fast Recovery (≤500 ns, >200 mA), adequate for line-frequency rectification and moderate-speed switching up to a few tens of kHz.