Skip to main content
Log in
STMicroelectronics STPS20SM120SR — Discrete Semiconductors

STPS20SM120SR Schottky Rectifier, 120 V, 20 A, I2PAK

MPNSTPS20SM120SR
Obsolete

STMicroelectronics STPS20SM120SR, Schottky rectifier, 120 V reverse voltage, 20 A average rectified current, 890 mV forward drop at 20 A, through-hole I2PAK (TO-262AA) package, ECOPACK2 compliant.

$1.6000Ref. price · indicative, final on quote
STMicroelectronics STPS20SM120SR datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STPS20SM120SR specifications
ParameterValue
SeriesECOPACK®2
MountingThrough Hole
Voltage - DC reverse (Vr)120 V
Voltage - forward (Vf) (Max) @ if890 mV @ 20 A
Current - reverse leakage @ vr210 µA @ 120 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

120 V, 20 A Schottky — what the ratings mean

The 890 mV maximum forward drop at 20 A is typical for a 120 V Schottky at this current level; the trade-off is higher leakage (210 µA at 120 V) compared to a lower-voltage Schottky, which matters in standby or light-load efficiency calculations.

Through-hole I2PAK — board fit

Housed in a through-hole I2PAK (TO-262AA) package with long leads, this part is designed for PCB mounting where a heatsink tab is soldered to the board or clamped to an external heatsink. The through-hole form factor suits wave-solder assembly and provides robust mechanical retention in high-vibration environments such as industrial power supplies and automotive auxiliary converters.

Frequently asked questions

Is STPS20SM120SR obsolete?

Determines if the part is still available or if a redesign is needed.

What is the replacement for STPS20SM120SR?

Essential for sourcing a drop-in alternative or substitute.

Where can I buy STPS20SM120SR?

Buyers need to find stock for prototype or legacy repair.

What is the pinout of STPS20SM120SR?

Design engineers must verify PCB footprint compatibility.

What are the specifications of STPS20SM120SR?

Validates if the diode meets circuit parameters like voltage and current.

What diode is equivalent to STPS20SM120SR?

Helps find a cross-reference from other manufacturers or series.