Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Diode Arrays

STMicroelectronics STPS2545CT

Name: STPS2545CT
Brand: STMicroelectronics
SKU: STPS2545CT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: STPS2545CT

Manufacturer:: STMicroelectronics

Category:: Diode Arrays

Package:: TO-220-3

Datasheet:: STPS2545CT.pdf

Description:: DIODE ARR SCHOTT 45V 12.5A TO220

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:2,705

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

STPS2545CT from STMicroelectronics is a dual-center-tab Schottky rectifier optimized for high-frequency switch-mode power supplies and DC-DC converters, with 45 V reverse voltage rating, 2 × 12.5 A average forward current per diode, 0.50 V typical forward voltage at 12.5 A/125 °C, and 175 °C maximum junction temperature-used in low-voltage inverters and polarity protection circuits.

For engineers reviewing the STPS2545CT datasheet, STPS2545CT pinout, STPS2545CT application, or STPS2545CT equivalent, key selection criteria include conduction loss modeling (P = 0.42×IF(AV) + 0.012×IF²(RMS)), thermal resistance (Rth(j-c) = 1.6 °C/W per diode), avalanche capability (345 W, tp = 10 µs), and TO-220AB mechanical compliance (0.55 N·m torque).

Technical Context

This dual-diode Schottky rectifier integrates two independent anode-cathode junctions sharing a common cathode tab in TO-220AB package, enabling synchronous free-wheeling or dual-channel output rectification. Its negligible switching losses and extremely fast recovery support operation beyond 1 MHz without snubbers.

Thermal design relies on conduction cooling via the metal tab: Rth(j-c) = 1.6 °C/W per diode, with coupling resistance Rth(c) = 0.6 °C/W between diodes-critical when both channels operate simultaneously under asymmetric load conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
VRRM	45 V - Maximum repetitive reverse blocking voltage per diode; defines safe operating range in buck or flyback secondary-side rectification.
IF(AV)	2 × 12.5 A - Average forward current per diode at TC = 160 °C; supports 25 A total device output with derating above 155 °C case temperature.
VF(typ.)	0.50 V @ 12.5 A, 125 °C - Low conduction loss enables >92% efficiency in 5–12 V output DC-DC stages at full load.
Rth(j-c)	1.6 °C/W per diode - Junction-to-case thermal resistance; determines minimum heatsink requirement for 12.5 A continuous operation.
IFSM	200 A @ tp = 10 ms - Non-repetitive surge rating; withstands inrush currents during cold-start of industrial SMPS.
Tj(max.)	175 °C - Maximum junction temperature; allows operation in sealed enclosures up to 105 °C ambient with appropriate thermal design.

Pinout & Package

TO-220AB package with center-tab cathode configuration: three leads (A1, A2, K), where K is common cathode tab, and A1/A2 are isolated anodes. Metal tab is electrically connected to cathode (K) and serves as primary thermal path.

Pin/Terminal	Circuit Role	Design Meaning
A1	Anode 1	Independent input terminal for first Schottky diode; used for channel 1 rectification or freewheeling path.
A2	Anode 2	Independent input terminal for second Schottky diode; enables dual-output or interleaved converter topologies.
K	Common Cathode	Shared output node and thermal interface; must be mounted to heatsink with electrical isolation if system ground reference differs.

Key Features

Feature	Design Value
Very small conduction losses	0.50 V VF typ. at 12.5 A/125 °C reduces power dissipation to <6.3 W per diode in 12 V output rails.
Extremely fast switching	No reverse recovery charge (Qrr ≈ 0); eliminates switching loss and EMI in >500 kHz converters.
Avalanche capability specified	345 W repetitive peak avalanche power (tp = 10 µs) protects against inductive turn-off transients in motor drive outputs.
Low thermal resistance	Rth(j-c) = 1.6 °C/W per diode enables direct mounting to aluminum heatsinks without thermal paste in ≤15 W/channel designs.

Applications

Server VRM Output Rectification

Industrial DC-DC Converter

Use Scenario: High-current, low-voltage (3.3–5 V) output stage in server voltage regulator modules.

IC Role / Device Role / Timing Role: Dual-channel synchronous rectifier replacing MOSFETs in multiphase buck converters.

Use Value: Eliminates gate drive complexity and body diode conduction loss while maintaining <0.5 V forward drop at 12.5 A per phase.

Use Scenario: Secondary-side rectification in 24 V input, 12 V/20 A isolated DC-DC module for PLC power supplies.

IC Role / Device Role / Timing Role: Dual-anode freewheeling diode providing return path during high-side switch off-time.

Use Value: Enables >94% efficiency at full load with no reverse recovery-related ringing or snubber components.

Solar Microinverter DC Link

Automotive Polarity Protection

Use Scenario: DC link rectification in single-phase transformerless microinverters interfacing PV panels to grid.

IC Role / Device Role / Timing Role: Bidirectional clamp and freewheeling element in H-bridge inverter output stage.

Use Value: Avalanche-rated operation withstands 45 V reverse transients during MPPT-induced voltage spikes without failure.

Use Scenario: Reverse-polarity protection at 12 V battery input of automotive infotainment head units.

IC Role / Device Role / Timing Role: Common-cathode series-blocking diode preventing damage during accidental battery reversal.

Use Value: 25 A total device current rating supports peak loads up to 20 A while maintaining <0.65 V drop at 125 °C junction temperature.

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-Schottky rectifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STPS25H45CG	D²PAK package, lower Rth(j-c) = 1.1 °C/W total, 1.38 g weight vs. TO-220AB's 1.95 g.	Better thermal performance in space-constrained PCB layouts; requires SMT reflow, not through-hole mounting.	Select when board area is limited and automated assembly is used; verify footprint compatibility with D²PAK land pattern.
VS-25CPH04-M3	Vishay part, same 45 V/25 A rating but higher VF = 0.58 V typ., Rth(j-c) = 1.8 °C/W per diode.	Higher conduction loss increases thermal load by ~1.2 W per diode at 12.5 A; requires larger heatsink.	Select only if STPS2545CT is unavailable; recalculate thermal margin and efficiency impact before substitution.

Compared with STPS2545CT, STPS25H45CG offers superior thermal dissipation in surface-mount form factor, while VS-25CPH04-M3 trades higher forward voltage for broader distributor availability-both require layout or thermal redesign to maintain system-level reliability.

Availability

STPS2545CT is available at Aetrix Electronics and suitable for server VRMs, industrial DC-DC converters, and automotive polarity protection requiring stable component supply across multi-year production cycles.

Supply support for STPS2545CT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing analog, MCU, power, and sensor solutions for industrial, automotive, and consumer markets.

The STPS series targets high-efficiency power conversion with Schottky technology optimized for SMPS, DC-DC, and inverter applications demanding low VF, fast switching, and rugged avalanche performance.

FAQ

Is STPS2545CT RoHS and REACH compliant?

Yes, STPS2545CT meets RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. It is also ECOPACK®2 compliant when ordered with D²PAK packaging; TO-220AB version complies with standard RoHS requirements as confirmed in ST's official material declarations.

Can STPS2545CT be used in parallel configurations?

Parallel operation is not recommended due to mismatched forward voltage characteristics between individual dies. Thermal coupling effects (Rth(c) = 0.6 °C/W) cause unequal current sharing-designs requiring >25 A should use a single higher-rated device or split loads across independent channels.

What is the maximum allowable mounting torque for the TO-220AB tab?

The recommended torque value is 0.55 N·m, with a maximum allowable torque of 0.7 N·m. Exceeding 0.7 N·m risks mechanical deformation of the leadframe or internal bond wire damage, potentially causing premature thermal or electrical failure.

Does STPS2545CT require a heatsink in all applications?

A heatsink is required for continuous operation above 8 A per diode at ambient temperatures >60 °C. At 12.5 A per diode and 25 °C ambient, a minimum 15 cm² copper pour (35 µm thick) is sufficient; above 75 °C ambient, forced-air-cooled aluminum heatsinks with ≥10 °C/W thermal resistance are mandatory.

STPS2545CT Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: TO-220-3

Packaging:: Tube

Product Status:: Active

Diode Configuration:: 1 Pair Common Cathode

Technology:: Schottky

Voltage - DC Reverse (Vr) (Max):: 45 V

Current - Average Rectified (Io) (per Diode):: 12.5A

Voltage - Forward (Vf) (Max) @ If:: 570 mV @ 12.5 A

Speed:: Fast Recovery =< 500ns, > 200mA (Io)

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 125 µA @ 45 V

Operating Temperature - Junction:: 175°C (Max)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220

STPS2545CT FAQ

1.How can I place an order for STPS2545CT through Aetrix?

Please submit a Request for Quotation (RFQ) for STPS2545CT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for STPS2545CT reliable?

The price and inventory of STPS2545CT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPS2545CT is usually 5 days.

3.What payment methods are accepted for STPS2545CT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPS2545CT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STPS2545CT?

STPS2545CT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STPS2545CT order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for STPS2545CT?

For technical support, including STPS2545CT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPS2545CT requirements.

6.How does Aetrix verify that STPS2545CT is sourced from the original manufacturer or authorized distributors?

All STPS2545CT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STPS2545CT meets industry standards.

7.What is the process for return or replacement of STPS2545CT?

All STPS2545CT units undergo pre-shipment inspection (PSI). If there is an issue with STPS2545CT, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The STPS2545CT part is unused and in its original packaging.

Return procedure for STPS2545CT:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-09-10 Schmitt Trigger Explained: Hysteresis, Circuits, Inverters and Applications

Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…

2026-09-09 Counterfeit Electronic Components: How to Detect, Authenticate, and Test Suspect Parts

Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…