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STMicroelectronics STPS1L40MF — Discrete Semiconductors

STPS1L40MF Schottky Diode, 40V 1A, Fast Recovery, DO-222AA

MPNSTPS1L40MF
Obsolete

STMicroelectronics STPS1L40MF Schottky diode, 40 V reverse voltage, 1 A average rectified current, fast recovery ≤ 500 ns, 500 mV forward drop at 1 A, 35 µA leakage at 40 V, DO-222AA STmite Flat package, surface mount.

$0.0844Ref. price · indicative, final on quote
STMicroelectronics STPS1L40MF datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STPS1L40MF specifications
ParameterValue
MountingSurface Mount
Voltage - DC reverse (Vr)40 V
Voltage - forward (Vf) (Max) @ if500 mV @ 1 A
Current - reverse leakage @ vr35 µA @ 40 V
Current - average rectified1A
Operating temperature - junction150°C (Max)
SpeedFast Recovery =< 500ns, > 200mA (Io)
PackageTape & Reel (TR)
TechnologySchottky
CaseDO-222AA

Product details

Schottky for tight forward-drop budgets

The STPS1L40MF is a 40 V, 1 A Schottky rectifier from STMicroelectronics in the DO-222AA STmite Flat surface-mount package. Its 500 mV maximum forward voltage at 1 A keeps conduction loss low in low-voltage rails, while the 35 µA reverse leakage at 40 V is typical for a Schottky of this voltage class — acceptable for most DC-DC output rectification and polarity-protection roles.

Obsolete — plan for replacement or surplus

ST lists the STPS1L40MF as obsolete. For new designs or volume production, evaluate a pin-compatible 40 V, 1 A Schottky in the same DO-222AA footprint — several manufacturers offer similar ratings.

Frequently asked questions

Where can I buy the STPS1L40MF?

The STPS1L40MF is obsolete from the manufacturer.

What is the replacement for STPS1L40MF?

No official replacement part number is listed by ST. Look for a 40 V, 1 A Schottky diode in the DO-222AA (STmite Flat) package from other suppliers — the footprint and ratings are common enough that several alternatives exist, though pinout should be verified against the original.

What are the specifications of STPS1L40MF?

40 V reverse voltage, 1 A average rectified current, 500 mV forward drop at 1 A, 35 µA leakage at 40 V, fast recovery (≤ 500 ns, > 200 mA), Schottky technology, DO-222AA STmite Flat surface-mount package, 150°C maximum junction temperature.