The STMicroelectronics STPS2150RL is a 150 V, 2 A Schottky rectifier in a through-hole DO-15 axial package. It is designed for fast-switching applications such as freewheeling diodes, polarity protection, and output rectification in switch-mode power supplies. The Schottky technology gives a low forward voltage drop of 820 mV at the rated 2 A, reducing conduction losses compared to a standard PN-junction diode. The fast recovery characteristic — under 500 ns — suits it for circuits where switching speed matters, though for most Schottky diodes the recovery is already inherently fast.
The STPS2150RL is listed as obsolete. For new designs or replacement of this line item, you will need to source from the surplus or broker channel.
The 150 V reverse voltage rating gives headroom for 48 V or 72 V bus rails, though in a 150 V system you would need a higher-rated part. The 2 A average forward current is continuous — peak repetitive current can be higher, but the average sets the thermal budget in a DO-15 package. Forward drop of 820 mV at 2 A is typical for a 150 V Schottky; expect it to rise with junction temperature. The junction temperature limit of 175 °C is standard for Schottky diodes, but the DO-15 body limits how much heat you can sink — in a 2 A continuous application, keep the ambient below 100 °C or add lead-length heatsinking.
The DO-15 axial package is about as rework-friendly as it gets. Two leads, through-hole, no thermal pad to worry about. A soldering iron or a basic hot-air station lifts it cleanly. The body is small enough that you can clip the leads and pull the part without damaging the board. Orientation is unambiguous — the cathode band is marked on the body. No MSL concerns; it ships in Tape & Reel, but the leads are long enough for hand insertion.