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STMicroelectronics STPS40SM60CT — Discrete Semiconductors

ST STPS40SM60CT Schottky Diode, 60V 20A, TO-220-3

MPNSTPS40SM60CT
NRND

STMicroelectronics STPS40SM60CT, Schottky diode, 60V Vr, 20A Io per diode, 625mV Vf, Fast Recovery =< 500ns, common cathode, TO-220-3, Tube.

$1.0253Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STPS40SM60CT specifications
ParameterValue
MountingThrough Hole
Voltage - DC reverse (Vr)60 V
Voltage - forward (Vf) (Max) @ if625 mV @ 20 A
Current - reverse leakage @ vr90 µA @ 60 V
Current - average rectified (Io) (per diode)20A
Operating temperature - junction150°C (Max)
SpeedFast Recovery =< 500ns, > 200mA (Io)
PackageTube
TechnologySchottky
CaseTO-220-3
Diode configuration1 Pair Common Cathode

Product details

60 V, 20 A Schottky — dual common-cathode in TO-220

The STPS40SM60CT is a Schottky rectifier from STMicroelectronics, configured as a pair of common-cathode diodes in a single TO-220-3 through-hole package. The reverse voltage rating is 60 V, and the reverse leakage at that voltage is 90 µA. The fast-recovery classification (≤ 500 ns, > 200 mA) suits it for switching power supplies, freewheeling diodes, and polarity-protection OR-ing stages where Schottky's low Vf and fast turn-off reduce losses.

625 mV forward drop — the conduction-loss number that matters

At 20 A per diode the forward voltage is 625 mV, which is typical for a 60 V Schottky in this current class. That figure directly sets the I²R conduction loss in a high-current rail — at 20 A each diode dissipates about 12.5 W. The common-cathode layout means the two anodes share the heatsink tab, simplifying thermal management in a center-tapped secondary or dual-output rectifier.

NRND — plan the last-time-buy or evaluate an alternate

For new designs, a pin-compatible alternative in the same STPS40 family should be evaluated — the TO-220-3 footprint and common-cathode configuration are shared across the series.

Frequently asked questions

Is STPS40SM60CT obsolete or NRND?

It is not fully obsolete but is not intended for new projects — existing production can still be supported through independent distribution.

What is a suitable replacement for STPS40SM60CT?

A pin-compatible alternative within the STPS40 series, such as the STPS40L60CT (lower Vf variant) or STPS40H100CT (higher voltage), may fit depending on the voltage and efficiency requirements. Both share the TO-220-3 common-cathode footprint. Verify the forward voltage and reverse voltage ratings against your design.

Does STPS40SM60CT have a common cathode configuration?

Yes, the two diodes share a common cathode — the cathode is the center pin (tab) and the anodes are the outer pins. This is the standard pinout for a dual Schottky in TO-220-3.

What is STPS40SM60CT's listed speed?

It is classified as Fast Recovery =< 500 ns, > 200 mA (Io), which is typical for a Schottky — the actual switching speed is much faster than the recovery classification suggests, well under 100 ns in practice.