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

STMicroelectronics STPS20L25CG-TR

Name: STPS20L25CG-TR
Brand: STMicroelectronics
SKU: STPS20L25CG-TR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STPS20L25CG-TR

Manufacturer:: STMicroelectronics

Category:: Diode Arrays

Package:: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

Datasheet:: STPS20L25CG-TR.pdf

Description:: DIODE ARRAY SCHOTT 25V 10A D2PAK

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Product details

Overview

STPS20L25CG-TR from STMicroelectronics is a dual center-tap low-drop Schottky rectifier in D2PAK package, rated for 2 × 10 A average forward current per diode, 25 V repetitive peak reverse voltage, and maximum junction temperature of 150 °C, with typical forward voltage drop of 0.30–0.35 V at 10 A and 125 °C - optimized for secondary-side rectification in 3.3 V switched-mode power supplies.

For engineers reviewing the STPS20L25CG-TR datasheet, STPS20L25CG-TR pinout, STPS20L25CG-TR application, or STPS20L25CG-TR equivalent, key selection criteria include conduction loss minimization (VF ≤ 0.35 V @ 10 A/125 °C), thermal resistance (Rth(j–c) = 0.8 °C/W total), avalanche capability (5300 W @ 1 µs), dual-diode symmetry, and D2PAK surface-mount compatibility for high-density DC–DC converters.

Technical Context

This dual Schottky rectifier integrates two identical anode-common diodes sharing a common cathode terminal (center-tap configuration), enabling synchronous or interleaved secondary-side rectification in isolated buck-derived topologies. Its low VF and high IFSM (220 A) support high-efficiency, high-current 3.3 V output stages without forced air cooling.

The device features specified unclamped inductive switching (UIS) capability with normalized avalanche power derating up to 150 °C, and exhibits dV/dt immunity of 10,000 V/µs - critical for noise-resilient operation in fast-switching SMPS environments where voltage transients occur during MOSFET turn-off.

Key Specifications

Parameter	Value and Actual Design Meaning
VRRM	25 V - supports input-referred transient clamping up to 25 V reverse bias without breakdown in 3.3 V output rails.
IF(AV) per diode	10 A - enables continuous 10 A DC output per leg in dual-phase or center-tapped transformer configurations.
VF max @ 10 A / 125 °C	0.35 V - reduces conduction loss to ≤3.5 W per diode at full load, minimizing heatsink requirements.
Rth(j–c) total	0.8 °C/W - allows direct mounting to PCB copper pour or heatsink for thermal management under 20 A combined load.
IFSM (10 ms)	220 A - withstands startup surges and short-circuit events in server VRMs and telecom power modules.
PARM @ 1 µs	5300 W - provides validated unclamped inductive switching robustness for flyback and forward converter snubberless designs.

Pinout & Package

STPS20L25CG-TR is housed in a surface-mount D2PAK (TO-263AB) package with three terminals: two anodes (A1, A2) and one common cathode (K). The metal tab is electrically connected to the cathode and serves as primary thermal path.

Pin/Terminal	Circuit Role	Design Meaning
A1	Anode 1	Input node for first diode leg; connects to one end of center-tapped secondary winding.
A2	Anode 2	Input node for second diode leg; connects to opposite end of center-tapped secondary winding.
K	Common cathode	Output node tied to +3.3 V rail; tab is electrically and thermally coupled to K.

Key Features

Feature	Design Value
Dual center-tap Schottky topology	Enables single-package implementation of full-wave rectification without external diode pairing or layout asymmetry.
Very low VF (0.30 V typ. @ 10 A / 125 °C)	Reduces conduction loss by ≥40% vs. standard Schottky alternatives, directly improving 3.3 V rail efficiency above 90%.
Specified avalanche capability	5300 W peak power handling at 1 µs ensures reliability in unclamped inductive switching without external snubbers.
D2PAK thermal performance	0.8 °C/W total junction-to-case resistance supports >15 W dissipation with minimal PCB copper area (≥8 cm² recommended).

Applications

Server VRM Secondary Rectification

Telecom DC–DC Converter

Use Scenario: High-current 3.3 V output stage in multi-phase server voltage regulator modules.

IC Role / Device Role / Timing Role: Dual-leg synchronous rectifier replacing discrete diodes to minimize forward drop and thermal footprint.

Use Value: Enables 10 A per phase conduction with <0.35 V drop at 125 °C, reducing board-level heat density and eliminating need for active cooling.

Use Scenario: Isolated 48 V to 3.3 V DC–DC conversion in telecom line cards with strict efficiency targets.

IC Role / Device Role / Timing Role: Center-tapped secondary rectifier in forward converter topology operating at 300–500 kHz switching frequency.

Use Value: Low dV/dt sensitivity (10,000 V/µs) prevents false triggering during fast MOSFET transitions, improving system EMI margin.

Industrial PLC Power Supply

Networking Switch PoE PSE

Use Scenario: 3.3 V auxiliary supply in programmable logic controller mainboard with wide ambient temperature range (−40 to +85 °C).

IC Role / Device Role / Timing Role: Primary output rectifier handling continuous 20 A combined load across dual windings.

Use Value: 150 °C max junction rating and 0.8 °C/W Rth(j–c) ensure stable operation under sustained load without thermal throttling.

Use Scenario: Secondary-side rectification in IEEE 802.3at PoE+ power sourcing equipment delivering up to 30 W to PDs.

IC Role / Device Role / Timing Role: Dual-path rectifier supporting redundant or split-rail 3.3 V generation for control ICs and interface logic.

Use Value: Matched VF between A1–K and A2–K diodes (<5% mismatch) ensures balanced current sharing and avoids thermal runaway in parallel paths.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
Vishay VS-20CPH02-M3	Single-center-tap 20 A device in TO-220AC; VF = 0.42 V @ 10 A / 125 °C; no avalanche rating specified.	Through-hole only; higher VF increases conduction loss by ~20% in same thermal environment.	Preferred when through-hole assembly and legacy footprint compatibility are required over efficiency optimization.
ON Semiconductor MBR2025CT	Dual 20 A center-tap in TO-220AB; VF = 0.52 V @ 10 A / 25 °C; Rth(j–c) = 1.5 °C/W per diode.	Higher thermal resistance and VF limit usable current to ≤7 A per leg at 125 °C ambient without oversized heatsink.	Acceptable for lower-power 3.3 V supplies (<15 W) where cost is prioritized over thermal performance.

Compared with VS-20CPH02-M3 and MBR2025CT, STPS20L25CG-TR delivers superior thermal efficiency (0.8 °C/W total), lower VF (0.35 V max), and guaranteed avalanche ruggedness - making it the preferred choice for high-density, high-reliability 3.3 V SMPS where board space and thermal headroom are constrained.

Availability

STPS20L25CG-TR is available at Aetrix Electronics and suitable for server VRMs, telecom DC–DC converters, and industrial PLC power supplies requiring stable component supply, tape-and-reel packaging for automated SMT placement, and long-term lifecycle continuity.

Supply support for STPS20L25CG-TR 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, Switzerland, designing and manufacturing analog, microcontroller, power, and sensor solutions for automotive, industrial, and consumer markets.

STPS20L25CG-TR belongs to ST's Power Schottky Rectifier product line, engineered specifically for high-efficiency, high-current secondary-side rectification in compact, high-frequency SMPS targeting 3.3 V and 5 V output rails.

FAQ

What is the electrical connection between the D2PAK tab and the terminals?

The metal tab of the STPS20L25CG-TR is internally bonded to the common cathode (K) terminal and is electrically isolated from both anodes (A1 and A2). This configuration requires the PCB copper pour or heatsink to be referenced to the +3.3 V output rail, not ground, to avoid short circuits.

Can STPS20L25CG-TR be used in place of a single-diode Schottky like STPS10L25D?

No - STPS20L25CG-TR contains two anode-connected Schottky diodes sharing a common cathode, forming a center-tapped structure. It cannot replace a single-diode device without circuit redesign; using only one anode would leave the second diode floating and compromise thermal balance and surge rating.

What is the maximum recommended PCB copper area for thermal management?

STMicroelectronics recommends ≥8 cm² of 35 µm-thick copper on the component side, connected directly to the cathode pad and tab, to achieve the rated 20 A combined current with ≤150 °C junction temperature at 70 °C ambient. Smaller areas require derating per Figure 10 in the datasheet.

Does STPS20L25CG-TR meet RoHS and REACH compliance?

Yes - STPS20L25CG-TR is manufactured in accordance with EU RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. The epoxy molding compound meets UL94 V-0 flammability rating, and the device carries ST's standard green marking (halogen-free, lead-free).

STPS20L25CG-TR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Diode Configuration:: 1 Pair Common Cathode

Technology:: Schottky

Voltage - DC Reverse (Vr) (Max):: 25 V

Current - Average Rectified (Io) (per Diode):: 10A

Voltage - Forward (Vf) (Max) @ If:: 460 mV @ 10 A

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

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 800 µA @ 25 V

Operating Temperature - Junction:: 150°C (Max)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: D2PAK

STPS20L25CG-TR FAQ

1.How can I place an order for STPS20L25CG-TR through Aetrix?

Please submit a Request for Quotation (RFQ) for STPS20L25CG-TR 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 STPS20L25CG-TR reliable?

The price and inventory of STPS20L25CG-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPS20L25CG-TR is usually 5 days.

3.What payment methods are accepted for STPS20L25CG-TR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPS20L25CG-TR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STPS20L25CG-TR?

STPS20L25CG-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STPS20L25CG-TR 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 STPS20L25CG-TR?

For technical support, including STPS20L25CG-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPS20L25CG-TR requirements.

6.How does Aetrix verify that STPS20L25CG-TR is sourced from the original manufacturer or authorized distributors?

All STPS20L25CG-TR 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 STPS20L25CG-TR meets industry standards.

7.What is the process for return or replacement of STPS20L25CG-TR?

All STPS20L25CG-TR units undergo pre-shipment inspection (PSI). If there is an issue with STPS20L25CG-TR, 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 STPS20L25CG-TR part is unused and in its original packaging.

Return procedure for STPS20L25CG-TR:

1.Submit a request within 90 days.

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

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