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STMicroelectronics STPS5L40 — Discrete Semiconductors

STPS5L40 Schottky Diode, 40V 5A DO-201AD

MPNSTPS5L40
Active

STMicroelectronics STPS5L40 Schottky diode, 40 V reverse, 5 A average rectified, 500 mV forward drop at 5 A, DO-201AD axial package, 150°C junction temperature.

$0.9400Ref. price · indicative, final on quote
STMicroelectronics STPS5L40 datasheet (PDF)
PackagingDO-201AD, Axial
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

STPS5L40 specifications
ParameterValue
Diode typeSchottky
MountingThrough Hole
Voltage - DC reverse (Vr)40 V
Voltage - forward (Vf) (Max) @ if500 mV @ 5 A
Current - reverse leakage @ vr200 µA @ 40 V
Current - average rectified5A
Operating temperature - junction150°C(Max)
SpeedFast Recovery =< 500ns, > 200mA (Io)
PackageCut Tape (CT); Tape & Box (TB)
CaseDO-201AD, Axial

Product details

Field-fit: 5 A Schottky in a DO-201AD axial package

The STPS5L40 is a 40 V, 5 A Schottky rectifier from STMicroelectronics in a DO-201AD axial-lead package. It is a straightforward replacement for common 5 A Schottky diodes in low-voltage power supplies, freewheeling diodes in DC-DC converters, and OR-ing diodes in redundant power systems. The through-hole package makes it a field-serviceable part — you can swap it on site with a standard soldering iron and a pair of cutters, no hot-air station required.

At 5 A forward current the typical forward voltage is 500 mV. The reverse leakage is 200 µA at the rated 40 V reverse voltage.

For production BOMs this means no imminent supply risk from obsolescence. The base product number is STPS5, so if you need a higher current or voltage variant within the same family the pinout and package footprint are consistent across the series.

Frequently asked questions

Can I use the STPS5L40 for high-frequency switching?

The STPS5L40 is a Schottky diode with fast recovery — typically under 500 ns — so it can handle switching frequencies in the tens of kilohertz range common in flyback and forward converters. For 100 kHz+ designs, check the junction capacitance (not listed on this record) to ensure the switching losses stay acceptable.

Is the STPS5L40 RoHS compliant?

Yes, the STPS5L40 is ROHS3 compliant.