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STMicroelectronics STPS140ZY — Discrete Semiconductors

STPS140ZY Schottky Diode, 40 V, 1 A, AEC-Q101, SOD-123

MPNSTPS140ZY
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STMicroelectronics STPS140ZY Schottky rectifier, AEC-Q101 qualified, 40 V reverse voltage, 1 A average current, 550 mV forward drop at 1 A, SOD-123 surface-mount package, junction temperature -40°C to 150°C.

$0.5900Ref. price · indicative, final on quote
STMicroelectronics STPS140ZY datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

STPS140ZY specifications
ParameterValue
SeriesAutomotive, AEC-Q101
Diode typeSchottky
MountingSurface Mount
Voltage - DC reverse (Vr)40 V
Voltage - forward (Vf) (Max) @ if550 mV @ 1 A
Current - reverse leakage @ vr40 µA @ 400 V
Current - average rectified1A
Operating temperature - junction-40°C~150°C
SpeedFast Recovery =< 500ns, > 200mA (Io)
PackageTape & Reel (TR); Cut Tape (CT)
CaseSOD-123

Product details

Schottky rectifier for automotive power rails

The STMicroelectronics STPS140ZY is a 40 V, 1 A Schottky rectifier in a SOD-123 surface-mount package, qualified to AEC-Q101 for automotive applications. Its low forward voltage of 550 mV at 1 A reduces conduction loss in rectification, freewheeling, and OR-ing diode circuits.

At 1 A forward current the maximum forward voltage is 550 mV, which keeps the junction temperature rise manageable in a SOD-123 footprint without forced airflow. Reverse leakage at 40 V is specified at 40 µA — typical for a Schottky of this voltage class, but worth derating if the diode sees sustained reverse bias near the maximum rating in a hot environment.

Frequently asked questions

Is STPS140ZY AEC-Q101 qualified for automotive applications?

Yes, the STPS140ZY is listed with the Automotive, AEC-Q101 series designation, confirming qualification for automotive-grade stress and reliability requirements.

STPS140ZY vs STPS140: what is the difference?

The STPS140ZY is the AEC-Q101 qualified automotive-grade variant of the base STPS140. The base part lacks the automotive qualification but shares the same 40 V / 1 A Schottky die and SOD-123 package. For automotive BOMs, the ZY suffix is the correct choice to meet AEC-Q101 requirements.