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STMicroelectronics STPS10L40CT — Discrete Semiconductors

STPS10L40CT Schottky Diode Array, 40V 5A TO-220-3

MPNSTPS10L40CT
Active

STMicroelectronics STPS10L40CT, Schottky diode array, 1 pair common cathode, 40 V DC reverse, 5 A average rectified per diode, 530 mV forward drop, Fast Recovery ≤ 500 ns, TO-220-3 through hole, ROHS3 compliant.

$1.5700Ref. price · indicative, final on quote
STMicroelectronics STPS10L40CT datasheet (PDF)
PackagingTO-220-3
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

STPS10L40CT specifications
ParameterValue
MountingThrough Hole
Voltage - DC reverse (Vr)40 V
Voltage - forward (Vf) (Max) @ if530 mV @ 5 A
Current - reverse leakage @ vr200 µA @ 40 V
Current - average rectified (Io) (per diode)5A
Operating temperature - junction150°C (Max)
SpeedFast Recovery =< 500ns, > 200mA (Io)
PackageTube
TechnologySchottky
CaseTO-220-3
Diode configuration1 Pair Common Cathode

Product details

Dual Schottky in a TO-220 — 40 V, 5 A per leg

The 530 mV maximum forward drop at 5 A keeps conduction losses manageable in a TO-220-3 through-hole package — the sort of part you find in the secondary-side rectification of a 12 V or 5 V output power supply, or as an OR-ing diode in a redundant rail.

At 5 A per diode, the 530 mV Vf translates to about 2.65 W of conduction loss per leg at full load. In a TO-220 with a heatsink tab, that is a manageable thermal load — but without a heatsink the junction will climb toward the 150°C maximum quickly. The 200 µA reverse leakage at 40 V is typical for a 40 V Schottky; expect it to rise with temperature, so the thermal design needs headroom above the steady-state dissipation.

Frequently asked questions

What are the common applications of the STPS10L40CT?

This dual Schottky array is typically used in low-voltage power supplies (12 V or 5 V outputs) for secondary-side rectification, as an OR-ing diode in redundant power rails, or in freewheeling and clamping circuits where the 40 V reverse rating and fast recovery suit switching frequencies up to several hundred kHz.