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STMicroelectronics STPS20SM100SR — Discrete Semiconductors

STPS20SM100SR Schottky Diode, 20A 100V, TO-262, Obsolete

MPNSTPS20SM100SR
Obsolete

STMicroelectronics STPS20SM100SR, Schottky Diode, 20 A Average Rectified, 100 V Reverse, 900 mV Forward Drop at 20 A, Fast Recovery ≤ 500 ns, Through Hole TO-262-3 (I2PAK), Tube.

STMicroelectronics STPS20SM100SR datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STPS20SM100SR specifications
ParameterValue
MountingThrough Hole
Voltage - DC reverse (Vr)100 V
Voltage - forward (Vf) (Max) @ if900 mV @ 20 A
Current - reverse leakage @ vr30 µA @ 100 V
Current - average rectified20A
Operating temperature - junction150°C (Max)
SpeedFast Recovery =< 500ns, > 200mA (Io)
PackageTube
TechnologySchottky
CaseTO-262-3 Long Leads, I²Pak, TO-262AA

Product details

20 A, 100 V Schottky — what it delivers

The STPS20SM100SR is a 20 A, 100 V Schottky rectifier from STMicroelectronics in the through-hole TO-262-3 (I2PAK) package. Its 900 mV maximum forward voltage at the full 20 A rating keeps conduction losses manageable in high-current rectification and freewheeling stages. The fast recovery characteristic (≤ 500 ns, > 200 mA) suits it for switching power supplies and DC-DC converters where reverse-recovery charge needs to be low.

STMicroelectronics lists the STPS20SM100SR as obsolete. No official successor is listed by the manufacturer, so a pin-compatible drop-in replacement needs to be qualified from the same Schottky family or a cross-shopped alternative.

Ratings that matter for the BOM

The 20 A average rectified current (Io) sets the continuous load this diode can handle in a forward-biased application — derate for ambient temperature and heatsinking. The 100 V reverse voltage (Vr max) defines the blocking capability; a 900 mV forward drop at 20 A is typical for a 100 V Schottky of this current class. Reverse leakage is specified at 30 µA at 100 V, which is the figure to check for standby power budgets in offline supplies.

Frequently asked questions

What is the replacement for STPS20SM100SR?

No official replacement is listed by STMicroelectronics. A functionally similar Schottky rectifier in the same TO-262 package with 20 A, 100 V ratings would need to be qualified. The STPS20SM100SR's 900 mV forward drop at 20 A and fast recovery characteristic are the key parameters to match.