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STMicroelectronics STPS30M120SR — Discrete Semiconductors

STPS30M120SR Schottky Rectifier, 30 A, 120 V, Fast Recovery

MPNSTPS30M120SR
Obsolete

STMicroelectronics STPS30M120SR, Schottky, 120 V, 30 A, Fast Recovery =< 500ns, > 200mA (Io), Through Hole, TO-262-3 Long Leads, I²Pak, TO-262AA, I2PAK, Tube.

$1.7000Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STPS30M120SR specifications
ParameterValue
MountingThrough Hole
Voltage - DC reverse (Vr)120 V
Voltage - forward (Vf) (Max) @ if900 mV @ 30 A
Current - reverse leakage @ vr275 µA @ 120 V
Current - average rectified30A
Operating temperature - junction150°C (Max)
SpeedFast Recovery =< 500ns, > 200mA (Io)
PackageTube
TechnologySchottky
CaseTO-262-3 Long Leads, I²Pak, TO-262AA

Product details

30 A, 120 V Schottky — fast-recovery rectifier for PFC and output stages

The STMicroelectronics STPS30M120SR is a 30 A, 120 V Schottky rectifier in a through-hole I2PAK package (TO-262AA). Reverse leakage at the 120 V blocking voltage is 275 µA.

Obsolete — plan a replacement or source surplus

The 30 A average rectified current and 120 V reverse voltage define the operating window: this is a high-current, medium-voltage Schottky for power supplies up to a few kilowatts. The 275 µA leakage at 120 V is a factor in standby power budgets; at elevated temperatures leakage rises significantly, so derate the part if the ambient is above 85°C. The fast recovery ≤500 ns is typical for a Schottky (majority-carrier device has no stored charge), but the spec confirms it handles high-frequency switching without reverse-recovery losses.

The STPS30M120SR comes in a through-hole I2PAK package (TO-262AA) with three long leads. The metal tab is the anode connection and needs a thermal pad or heatsink for high-current operation. The through-hole form factor is suited for boards where a screw-mount or clip-on heatsink is used, typical in industrial power supplies and motor drives.

Frequently asked questions

What is the best replacement for STPS30M120SR?

No official replacement part number is listed by STMicroelectronics for the STPS30M120SR. For a pin-compatible alternative, look for a 30 A, 120 V Schottky rectifier in the I2PAK package from other manufacturers such as Vishay or ON Semiconductor. Confirm the forward voltage drop and reverse leakage match your design margins.

What are the specifications of STPS30M120SR?

The STPS30M120SR is a 30 A, 120 V Schottky rectifier with fast recovery ≤500 ns at >200 mA. Forward voltage is 900 mV at 30 A, reverse leakage is 275 µA at 120 V, and the maximum junction temperature is 150°C. It is in a through-hole I2PAK (TO-262AA) package.

Where can I buy STPS30M120SR today?

The STPS30M120SR is obsolete but can be sourced through independent distribution. Submit an RFQ for current availability and pricing — stock is confirmed at quote time.