Schottky rectifier for low-voltage, moderate-current rails
The STPS1L60AFN is a 60 V, 1 A Schottky rectifier from STMicroelectronics, housed in the compact DO-221AC SMA Flat Leads package with a SMAflat Notch supplier device package. It delivers a forward voltage of 570 mV at 1 A, keeping conduction losses low in power supply output rectification, freewheeling diodes, and polarity protection circuits.
For BOM lines that still call out this exact part number, procurement runs through independent distribution — last-time-buy stock or surplus inventory.
Key ratings for fit
The 1 A average rectified current covers moderate loads like secondary-side rectification in a 10–15 W offline supply or a freewheeling clamp on a relay coil. Forward voltage of 570 mV at 1 A is typical for a 60 V Schottky at this current density — expect lower Vf at lighter loads, which helps efficiency in low-duty-cycle applications. Reverse leakage is 50 µA at 60 V, a figure to budget for in high-temperature operation.
Package and storage notes
The DO-221AC SMA Flat Leads package is a low-profile surface-mount package with flat leads, smaller than a standard SMA. The SMAflat Notch variant has a polarity-indicating notch.