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STMicroelectronics STPS20SM100SG-TR — Discrete Semiconductors

STPS20SM100SG-TR Schottky Rectifier, 100 V 20 A, D²PAK

MPNSTPS20SM100SG-TR
Obsolete

STMicroelectronics STPS20SM100SG-TR, Schottky Rectifier, 100 V DC reverse, 20 A average rectified, 900 mV forward drop at 20 A, D²PAK (TO-263AB), surface mount, fast recovery ≤500 ns.

$2.5000Ref. price · indicative, final on quote
STMicroelectronics STPS20SM100SG-TR datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STPS20SM100SG-TR specifications
ParameterValue
MountingSurface Mount
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)
PackageTape & Reel (TR) Cut Tape (CT)
TechnologySchottky
CaseTO-263-3, D²Pak (2 Leads + Tab), TO-263AB

Product details

100 V 20 A Schottky — what it handles

The STPS20SM100SG-TR is a 100 V, 20 A Schottky rectifier from STMicroelectronics, built for the fast-switching, low-forward-drop leg of a power supply or OR-ing diode application. The 900 mV forward drop at 20 A is the conduction loss number you size the heatsink for — at full load that is 18 W junction dissipation, and the 150 °C max junction temperature sets the derating curve.

STMicroelectronics lists this part as obsolete. No official successor is recorded in the lifecycle data. For a production BOM that already carries this rectifier, the path is either a last-time-buy buy-in or a qualification of a pin-compatible replacement. The D²PAK footprint is common across the STPS20 family, so a drop-in like the STPS20H100CT (same 100 V / 20 A rating, different Vf characteristic) is the first candidate to evaluate — but confirm the forward voltage and reverse leakage trade-offs against your thermal budget before swapping.

Package and thermal — D²PAK layout notes

The TO-263AB (D²PAK) surface-mount package has a large exposed tab on the bottom. That tab is the cathode and the primary thermal path. A two-layer board with minimal copper will run the junction hotter than a four-layer board with a dedicated thermal plane. The tab must be soldered; a dry joint here lifts the junction temperature by 20 °C or more.

Frequently asked questions

What is the replacement for STPS20SM100SG-TR?

No official successor is listed. A pin-compatible candidate in the same STPS20 family is the STPS20H100CT, which shares the 100 V / 20 A rating and D²PAK footprint. Verify forward voltage and reverse leakage against your design's thermal limits before committing.

What are the specifications of STPS20SM100SG-TR?

It is a 100 V, 20 A Schottky rectifier in a D²PAK (TO-263AB) surface-mount package. Forward voltage is 900 mV max at 20 A. Reverse leakage is 30 µA at 100 V. Operating junction temperature is 150 °C max. It is rated as a fast recovery diode (≤500 ns, >200 mA).

STPS20SM100SG-TR vs STPS20H100CT?

Both are 100 V, 20 A Schottky rectifiers in the D²PAK footprint. The key difference is forward voltage characteristic: the STPS20SM100SG-TR lists 900 mV at 20 A, while the STPS20H100CT typically has a lower Vf at moderate currents but higher leakage at elevated temperature. The choice depends on your conduction loss budget and thermal design.