The STPS2L30UF is listed as obsolete. This is not a last-time-buy window; it is end-of-life, meaning the manufacturer no longer produces it.
Key ratings for a low-loss rectifier
This is a 2A average rectified Schottky diode with a 30V reverse voltage rating, in the DO-221AA SMB Flat Leads package. The forward voltage drop is 450 mV at 2A, which keeps conduction losses low in a 2A rail. Reverse leakage is 200 µA at 30V, typical for a Schottky at this voltage and current class. The fast recovery characteristic (≤500ns, >200mA) means it handles switching frequencies where a standard recovery diode would burn recovery losses.
Surface-mount in the SMBflat package (DO-221AA). The flat-lead profile reduces the footprint compared to a standard SMB, which helps in dense layouts.
