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STMicroelectronics STPS5045SG-TR — Discrete Semiconductors

STPS5045SG-TR Schottky Diode, 45V 50A D²PAK

MPNSTPS5045SG-TR
Active

STMicroelectronics STPS5045SG-TR Schottky rectifier, 45 V reverse, 50 A average, 610 mV forward drop at 50 A, 200 °C junction temperature, D²PAK surface mount.

$1.9300Ref. price · indicative, final on quote
STMicroelectronics STPS5045SG-TR datasheet (PDF)
PackagingTO-263-3, D²Pak (2 Leads + Tab), TO-263AB
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

STPS5045SG-TR specifications
ParameterValue
MountingSurface Mount
Voltage - DC reverse (Vr)45 V
Voltage - forward (Vf) (Max) @ if610 mV @ 50 A
Current - reverse leakage @ vr360 µA @ 45 V
Current - average rectified50A
Operating temperature - junction200°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

The STPS5045SG-TR is a 45 V, 50 A Schottky rectifier from STMicroelectronics in a D²PAK (TO-263) surface-mount package. It is built for high-current OR-ing, reverse-polarity protection, and output rectification in switch-mode power supplies where the low forward drop keeps conduction losses manageable. The 200 °C maximum junction temperature gives thermal headroom, but the reverse leakage at 45 V (360 µA at 25 °C) climbs exponentially with temperature; at 125 °C junction it can reach tens of milliamps, so the standby loss budget needs that curve from the datasheet.

The D²PAK (TO-263-3) has a large exposed tab that is electrically common with the cathode. Surface-mount assembly with the D²PAK follows standard reflow profiles for the solder paste on the tab. The package is compatible with both cut-tape and tape-and-reel handling, so it fits automated pick-and-place without special tooling.

ROHS3 compliance is confirmed, which covers the current exemption list for lead-free soldering processes.

Frequently asked questions

What is the maximum junction temperature of STPS5045SG-TR?

The maximum junction temperature is 200 °C. That is a high ceiling for a Schottky, but the reverse leakage at that temperature is significantly higher than at 125 °C — budget the leakage current in your thermal runaway check if the diode runs near the limit continuously.