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STMicroelectronics STPS1545CG — Discrete Semiconductors

STPS1545CG Schottky Diode, 45V 7.5A Dual Common Cathode

MPNSTPS1545CG
Obsolete

STMicroelectronics STPS1545CG dual Schottky rectifier, 45 V DC reverse voltage, 7.5 A average rectified current per diode, 570 mV forward voltage at 7.5 A, 175°C max junction temperature, D2PAK (TO-263) surface-mount package, Tube.

$1.8100Ref. price · indicative, final on quote
STMicroelectronics STPS1545CG datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STPS1545CG specifications
ParameterValue
Diode typeSchottky
MountingSurface Mount
Voltage - DC reverse (Vr)45 V
Voltage - forward (Vf) (Max) @ if570 mV @ 7.5 A
Current - reverse leakage @ vr100 µA @ 45 V
Current - average rectified (Io) (per diode)7.5A
Operating temperature - junction175°C(Max)
SpeedFast Recovery =< 500ns, > 200mA (Io)
PackageTube
CaseTO-263-3, D²Pak (2 Leads + Tab), TO-263AB
Diode configuration1 Pair Common Cathode

Product details

Dual Schottky in a D2PAK — what you are working with

The STPS1545CG is a dual Schottky rectifier from STMicroelectronics, configured as a pair of common-cathode diodes in a single D2PAK (TO-263) surface-mount package.

STMicroelectronics lists the STPS1545CG as obsolete. Sourcing this part today means going through the independent surplus and broker channel, where availability depends on what is left in inventory from past production runs.

The 45 V reverse voltage rating sets the maximum DC bus voltage this diode can block — suitable for 24 V and 36 V rails with margin, but not for 48 V telecom supplies. Reverse leakage is specified at 100 µA at 45 V, which matters for standby power budgets in battery-powered or always-on equipment.

The D2PAK (TO-263-3) package has two leads plus the tab, which is the cathode common terminal. The exposed metal tab must be soldered to the PCB copper pour for thermal management — without a good thermal connection, the junction temperature rises quickly above the 175°C limit under sustained load. The part ships in Tube form, not tape-and-reel, so plan for manual or tube-fed placement if you are setting up a production line.

Frequently asked questions

What is the closest pin-compatible alternative to STPS1545CG?

The lifecycle record does not list an official successor or cross-reference. For a drop-in replacement, look for a dual common-cathode Schottky in D2PAK with a 45 V reverse voltage and at least 7.5 A per diode rating. Parts like the MBRB1545CT or similar from other manufacturers may fit, but verify the footprint and thermal pad layout against the D2PAK package before committing the BOM.

What is STPS1545CG's listed speed?

The part is a Schottky diode, so it is inherently a fast-recovery device — the specification lists a recovery time of ≤ 500 ns at > 200 mA forward current. That is typical for Schottky rectifiers and sufficient for switch-mode power supply output rectification up to several hundred kilohertz.