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

STMicroelectronics STPS20L25CG

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

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Part No.:: STPS20L25CG

Manufacturer:: STMicroelectronics

Category:: Diode Arrays

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

Datasheet:: STPS20L25CG.pdf

Description:: DIODE ARRAY SCHOTT 25V 10A TO263

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Product details

Overview

STPS20L25CG from STMicroelectronics is a dual center-tap low-drop Schottky rectifier optimized for secondary-side rectification in 3.3 V switched-mode power supplies and high-frequency DC–DC converters, with 25 V repetitive peak reverse voltage, 20 A average forward current (per device), and maximum forward voltage drop of 0.35 V at 125 °C.

For engineers reviewing the STPS20L25CG datasheet, STPS20L25CG pinout, STPS20L25CG application, or STPS20L25CG equivalent, key selection criteria include thermal resistance (R_th(j-c) = 0.8 °C/W total), avalanche capability (5300 W peak), dual-diode conduction symmetry, and D2PAK package suitability for conduction-cooled PCB layouts.

Technical Context

This dual-center-tap Schottky rectifier integrates two identical anode-cathode diodes sharing a common cathode terminal (K), enabling synchronous or interleaved rectification topologies. Its low V_F (0.30–0.48 V across temperature and current) minimizes conduction loss in low-voltage, high-current outputs.

The device features specified avalanche energy handling (P_ARM = 5300 W at T_j = 25 °C, t_p = 1 µs), dV/dt rating of 10,000 V/µs, and thermal runaway avoidance via R_th(j-c) < −1·dP_tot/dT_j, making it suitable for unregulated or transient-prone SMPS secondaries.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	25 V - Maximum reverse blocking voltage without breakdown; supports 3.3 V output rails with margin against ringing and overshoot.
I_F(AV)	20 A (per device) - Total average forward current capacity when both diodes operate simultaneously at T_c = 145 °C, δ = 0.5 duty cycle.
V_F(max)	0.35 V @ T_j = 125 °C, I_F = 10 A - Low conduction loss enables >90% efficiency in compact 3.3 V/10–20 A SMPS designs.
R_th(j-c)	0.8 °C/W (total) - Junction-to-case thermal resistance allows direct heatsink mounting; enables 20 A operation with ≤20 °C temperature rise above case.
P_ARM	5300 W @ t_p = 1 µs - Rated avalanche pulse power ensures robustness during output short-circuit or startup transients.
dV/dt	10,000 V/µs - High critical rate of rise of reverse voltage prevents false turn-on in fast-switching topologies like active-clamp forward or LLC.

Pinout & Package

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

Pin/Terminal	Circuit Role	Design Meaning
A1	Anode 1	Input terminal for first diode leg; connects to transformer secondary winding tap or phase node in dual-output configurations.
A2	Anode 2	Input terminal for second diode leg; enables symmetrical current sharing in center-tapped transformer or dual-phase rectification.
K	Common Cathode	Output node for rectified DC; electrically and thermally tied to exposed copper pad; must be soldered to ≥10 cm² Cu area on FR4 for R_th(j-a) ≤ 50 °C/W.

Key Features

Feature	Design Value
Very low forward voltage drop	V_F ≤ 0.48 V @ 20 A, 125 °C - Reduces conduction loss by >40% vs. standard Schottky alternatives, lowering heatsink requirements.
Optimized conduction/reverse loss trade-off	IRRM = 1 A @ V_RRM, 1 kHz - Balances leakage and V_F for highest net efficiency in 3.3 V/10–20 A applications.
Specified avalanche capability	5300 W peak avalanche power - Enables reliable operation under output short-circuit or no-load transient conditions without derating.
Dual center-tap configuration	Shared cathode (K), isolated anodes (A1/A2) - Simplifies PCB layout for center-tapped transformer secondaries and eliminates need for external current-sharing resistors.

Applications

Server VRM Secondary Rectification

Industrial DC–DC Converter Output Stage

Use Scenario: 3.3 V, 15 A output stage in server voltage regulator modules using center-tapped transformers.

IC Role / Device Role / Timing Role: Dual Schottky rectifier providing synchronous rectification with shared cathode return path.

Use Value: 0.35 V V_F at 125 °C reduces power loss to ≤5.3 W per diode, enabling passive cooling and meeting 80 PLUS Titanium efficiency targets.

Use Scenario: 3.3 V/20 A isolated DC–DC module for programmable logic controller (PLC) power supplies.

IC Role / Device Role / Timing Role: Center-tap rectifier handling high peak currents during motor drive transient loads.

Use Value: 220 A I_FSM surge rating and 10,000 V/µs dV/dt withstand support robust operation during PLC output switching noise events.

Telecom Base Station Power Supply

Automotive ADAS Domain Controller Power

Use Scenario: 3.3 V standby and auxiliary rail in 48 V telecom rectifier systems with wide ambient temperature range.

IC Role / Device Role / Timing Role: Low-V_F rectifier minimizing idle losses while maintaining 150 °C T_j(max) rating.

Use Value: 0.30 V V_F at 125 °C and 10 A enables >94% conversion efficiency at light load, extending system uptime in fanless enclosures.

Use Scenario: 3.3 V core supply for radar and camera processing units in automotive domain controllers operating at −40 to +125 °C ambient.

IC Role / Device Role / Timing Role: High-reliability rectifier with qualified avalanche performance for ISO 16750-2 load dump immunity.

Use Value: Specified P_ARM = 5300 W and T_j(max) = 150 °C ensure compliance with AEC-Q101 stress test requirements for safety-critical power rails.

Availability

STPS20L25CG is available at Aetrix Electronics and suitable for server VRM secondary rectification, industrial DC–DC converter output stages, and telecom base station power supplies requiring stable component supply and long-term production continuity.

Supply support for STPS20L25CG 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, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.

The STPS series targets high-efficiency, low-voltage power conversion; STPS20L25CG specifically addresses the need for thermally robust, dual-diode Schottky rectifiers in space-constrained 3.3 V SMPS designs.

FAQ

What is the thermal interface requirement for STPS20L25CG in D2PAK?

The D2PAK package requires soldering the exposed cathode tab to ≥10 cm² of 35 µm-thick copper on FR4 to achieve R_th(j-a) ≤ 50 °C/W. Thermal vias under the pad (≥6×0.3 mm diameter) are recommended to enhance heat transfer to inner layers. No thermal compound is needed if solder coverage exceeds 90%.

Can STPS20L25CG replace STPS20L25CT in existing TO-220AB designs?

No - STPS20L25CG uses D2PAK (surface-mount), while STPS20L25CT uses TO-220AB (through-hole). Footprint, thermal mounting, and reflow profile differ significantly. Board redesign and thermal validation are required; electrical specs are identical, but mechanical integration is not interchangeable.

Is STPS20L25CG suitable for synchronous rectification control schemes?

STPS20L25CG is a passive Schottky rectifier and does not integrate gate drive or control logic. It can be used in synchronous rectification topologies only when paired with external MOSFET drivers and timing controllers - its low V_F and fast recovery make it ideal as a benchmark for MOSFET-based sync rectifier efficiency comparison.

How does the dual-center-tap configuration affect PCB layout?

The A1–K and A2–K diode pairs share the cathode (K) terminal, allowing single-point DC output routing and simplified ground plane design. Layout must maintain symmetrical trace lengths and impedance between A1 and A2 to ensure balanced current sharing; asymmetry >10% may cause thermal imbalance and premature failure.

STPS20L25CG Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

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

Packaging:: Tube

Product Status:: Active

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:: TO-263 (D2PAK)

STPS20L25CG FAQ

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

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

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

3.What payment methods are accepted for STPS20L25CG?

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

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STPS20L25CG?

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

Once your STPS20L25CG 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?

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

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

All STPS20L25CG 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 meets industry standards.

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

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

Return procedure for STPS20L25CG:

1.Submit a request within 90 days.

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

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