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STMicroelectronics STPS40M80CR — Discrete Semiconductors

STPS40M80CR Schottky Diode, 80 V, 20 A, Fast Recovery

MPNSTPS40M80CR
Obsolete

STMicroelectronics STPS40M80CR, Schottky diode, 1 pair common cathode, 80 V DC reverse, 20 A average rectified per diode, fast recovery ≤500 ns, 735 mV forward drop, TO-262-3 (I2PAK), through hole, tube.

STMicroelectronics STPS40M80CR datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STPS40M80CR specifications
ParameterValue
Diode typeSchottky
MountingThrough Hole
Voltage - DC reverse (Vr)80 V
Voltage - forward (Vf) (Max) @ if735 mV @ 20 A
Current - reverse leakage @ vr65 µA @ 80 V
Current - average rectified (Io) (per diode)20A
Operating temperature - junction175°C(Max)
SpeedFast Recovery =< 500ns, > 200mA (Io)
PackageTube
CaseTO-262-3 Long Leads, I²Pak, TO-262AA
Diode configuration1 Pair Common Cathode

Product details

Dual Schottky in a TO-262 — what the ratings mean

The fast recovery characteristic (≤500 ns, >200 mA) suits it for high-frequency switching in power supplies and DC-DC converters where reverse-recovery losses matter.

Forward drop and thermal budget

At 20 A forward current the maximum forward voltage is 735 mV — this sets the conduction loss floor. In a TO-262 (I2PAK) through-hole package, the junction temperature is rated to 175 °C maximum, so the thermal path through the tab and heatsink must keep the junction below that ceiling under full load.

Reverse leakage at temperature

Reverse leakage is specified at 65 µA at 80 V. Schottky leakage rises exponentially with junction temperature; at 175 °C the actual leakage will be significantly higher, which must be factored into standby-power and thermal-runaway calculations.

Lifecycle — obsolete, sourced to order

STMicroelectronics lists the STPS40M80CR as obsolete.

Frequently asked questions

What is the replacement for STPS40M80CR?

No official replacement part number is recorded in the lifecycle data. A functionally similar dual common-cathode Schottky in the same package and voltage/current class would need to be evaluated for pin-compatibility and electrical margin.