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STMicroelectronics STPS0540Z — Discrete Semiconductors

STPS0540Z Schottky Diode, 40V 500mA, SOD-123

MPNSTPS0540Z
Active

STMicroelectronics STPS0540Z Schottky rectifier, 40 V reverse, 500 mA forward, 500 mV Vf at rated current, SOD-123 surface-mount package.

$0.3800Ref. price · indicative, final on quote
STMicroelectronics STPS0540Z datasheet (PDF)
PackagingSOD-123
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

STPS0540Z specifications
ParameterValue
Diode typeSchottky
MountingSurface Mount
Voltage - DC reverse (Vr)40 V
Voltage - forward (Vf) (Max) @ if500 mV @ 500 mA
Current - reverse leakage @ vr40 µA @ 40 V
Current - average rectified500mA
Operating temperature - junction150°C(Max)
SpeedFast Recovery =< 500ns, > 200mA (Io)
PackageTape & Reel (TR); Cut Tape (CT)
CaseSOD-123

Product details

Low Vf Schottky for 500 mA rails

The STPS0540Z is a 40 V, 500 mA Schottky barrier rectifier in a SOD-123 surface-mount package. Its forward voltage is specified at 500 mV maximum at the full 500 mA forward current — this is the conduction loss figure that sets the junction temperature rise in a low-voltage rail or OR-ing diode application.

Leakage and thermal budget

Reverse leakage is 40 µA at the 40 V rated reverse voltage. In a battery-powered design where the diode sits across a rail in reverse-blocking mode, that leakage current contributes to standby drain — and it rises exponentially with junction temperature. The maximum junction temperature is rated at 150°C, so the thermal design should keep the die well below that under worst-case conduction and ambient conditions.

Active production, no obsolescence watch

It is ROHS3 compliant.

Frequently asked questions

What package does STPS0540Z come in?

It is supplied in a SOD-123 surface-mount package.

Is STPS0540Z RoHS compliant?

Yes, it is ROHS3 compliant.