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STMicroelectronics STPS1545CR — Discrete Semiconductors

STPS1545CR Schottky Rectifier, 45V 7.5A Common Cathode

MPNSTPS1545CR
Active

STMicroelectronics STPS1545CR, Schottky rectifier, 45 V reverse voltage, 7.5 A average rectified current per diode, 570 mV forward voltage, 1 pair common cathode, TO-262-3 (I2PAK), through hole.

$0.8493Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

STPS1545CR specifications
ParameterValue
MountingThrough Hole
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
TechnologySchottky
CaseTO-262-3 Long Leads, I²Pak, TO-262AA
Diode configuration1 Pair Common Cathode

Product details

The 570 mV forward voltage at 7.5 A keeps conduction losses manageable in a 12 V or 24 V output rectifier or OR-ing diode application. It comes in a TO-262-3 (I2PAK) through-hole package, which suits wave-solder assembly and provides a large tab for heatsinking.

Common-cathode pair — layout and design note

The common-cathode configuration (1 Pair Common Cathode) means the two anodes are separate and the cathodes are tied internally. This is the standard topology for a center-tapped secondary rectifier: each anode connects to one end of the transformer winding, the common cathode goes to the output rail. It also works as a dual OR-ing diode for redundant power feeds — two input rails, one shared output. The single I2PAK package saves board area versus two discrete SMD or TO-220 devices.

175°C junction — thermal budget for tight enclosures

The high Tj max allows the designer to push more current through the device without derating as aggressively as a 150°C-rated Schottky.

Frequently asked questions

Can STPS1545CR be used in a common cathode configuration?

Yes. The STPS1545CR is a 1 Pair Common Cathode dual Schottky rectifier. The two anodes are independent and the cathodes are internally connected, which is the standard pinout for center-tapped rectifiers and OR-ing diode arrays.

What is STPS1545CR's listed speed on this component line?

The STPS1545CR is a Schottky rectifier with a fast recovery characteristic: ≤ 500 ns at > 200 mA forward current. This is typical for Schottky diodes, which switch quickly with negligible reverse recovery charge.