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

STMicroelectronics STPS20SM80CG-TR

Name: STPS20SM80CG-TR
Brand: STMicroelectronics
SKU: STPS20SM80CG-TR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STPS20SM80CG-TR

Manufacturer:: STMicroelectronics

Category:: Diode Arrays

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

Datasheet:: STPS20SM80CG-TR.pdf

Description:: DIODE ARRAY SCHOTT 80V 10A D2PAK

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Product details

Overview

STPS20SM80CG-TR from STMicroelectronics is a dual common-cathode Schottky rectifier in insulated TO-220FPAB package, rated for 80 V repetitive peak reverse voltage and 2 × 10 A average forward current per diode at TC = 130 °C. It delivers low forward voltage drop (0.515 V typ. at 10 A, 125 °C), low leakage (5 µA max. at 125 °C, VR = 80 V), and avalanche-rated operation (100 V, 16.2 A pulse), targeting high-frequency SMPS in notebook adapters and LCD TV power supplies.

For engineers reviewing the STPS20SM80CG-TR datasheet, STPS20SM80CG-TR pinout, STPS20SM80CG-TR application, or STPS20SM80CG-TR equivalent, key selection criteria include junction-to-case thermal resistance (4.65 °C/W total), insulated 2000 VRMS isolation, dual-diode conduction loss modeling, and avalanche energy capability under transient overvoltage conditions.

Technical Context

This dual Schottky rectifier integrates two independent anodes sharing a single cathode terminal, enabling synchronous or interleaved output rectification in center-tapped or dual-output DC/DC converters. Its TO-220FPAB package provides electrical insulation between mounting surface and internal die, eliminating need for insulating washers in heatsink-mounted designs.

The device operates with maximum junction temperature of 175 °C and features specified avalanche capability (385 W peak, 10 µs pulse), allowing robust handling of inductive switching transients without external snubbers. Static characteristics are characterized across -65 to +175 °C storage range and validated per ST application notes AN1768 and AN2025.

Key Specifications

Parameter	Value and Actual Design Meaning
VRRM	80 V - Maximum repetitive reverse blocking voltage per diode; defines safe operating limit in flyback or forward converter secondary side.
IF(AV) per diode	10 A at TC = 130 °C - Continuous DC current rating per anode; determines heatsink sizing for 20 A total dual-diode output.
VF(typ.)	0.515 V at 10 A, 125 °C - Low conduction loss enables >92% efficiency in 12 V/20 A adapter outputs.
IR(max)	15 mA at 125 °C, VR = 80 V - Leakage current impacts standby power; critical for Energy Star-compliant no-load performance.
Rth(j-c) total	4.65 °C/W - Junction-to-case thermal resistance for both diodes; used with heatsink Rth(c-a) to calculate max ambient temperature.
VARM	100 V at tp < 1 µs - Avalanche breakdown voltage threshold; supports unclamped inductive turn-off in synchronous rectifiers.
Tj(max)	175 °C - Maximum junction temperature; enables operation in compact enclosures with limited airflow.

Pinout & Package

STPS20SM80CG-TR uses the insulated TO-220FPAB package with creepage/clearance compliant for 2000 VRMS isolation. Mounting tab is electrically isolated from internal semiconductor die.

Pin/Terminal	Circuit Role	Design Meaning
Anode 1 (A1)	First Schottky anode	Connects to transformer secondary winding or switch node in dual-output topology.
Anode 2 (A2)	Second Schottky anode	Enables independent rectification path; supports interleaved or redundant output configurations.
Cathode (K)	Common cathode	Shared output node; ties to bulk capacitor positive rail; carries full combined forward current.
Mounting Tab	Isolated thermal pad	Electrically floating heatsink interface; eliminates need for mica insulator or silicone pad.

Key Features

Feature	Design Value
Insulated TO-220FPAB package	2000 VRMS isolation enables direct heatsink mounting without dielectric barriers, reducing assembly cost and thermal interface resistance.
Avalanche-rated operation	Specified 385 W peak avalanche power (10 µs) allows reliable clamping of inductive spikes without external TVS devices.
Low VF at high temperature	0.515 V typ. forward drop at 10 A and 125 °C maintains efficiency during sustained load conditions in enclosed adapters.
High Tj(max)	175 °C junction rating permits operation in thermally constrained spaces such as ultra-thin laptop power bricks.
Optimized leakage-VF trade-off	5 µA IR max at 125 °C balances low standby loss against conduction loss-critical for EU CoC Tier 2 compliance.

Applications

Notebook AC-DC Adapter

LCD TV Power Supply

Use Scenario: 19.5 V / 20 A dual-rail output stage in slim-profile laptop adapters with tight thermal envelope.

IC Role / Device Role / Timing Role: Dual-anode Schottky rectifier providing synchronous secondary-side conduction with shared cathode return path.

Use Value: 0.515 V VF at 125 °C reduces conduction loss by ~1.2 W vs. standard Schottky, improving full-load efficiency to 93.4%.

Use Scenario: 12 V / 5 A and 24 V / 3 A auxiliary rails in integrated LCD TV mainboard power supply.

IC Role / Device Role / Timing Role: Dual-diode configuration enables independent regulation of two output voltages from single transformer secondary.

Use Value: Insulated TO-220FPAB allows shared heatsink for both outputs without grounding conflict, saving PCB area and BOM count.

Game Console Power Module

Desktop PC ATX +12 V VRM

Use Scenario: High-pulse-current 12 V rail in gaming console power module subject to dynamic 50–100 A transient loads.

IC Role / Device Role / Timing Role: Avalanche-rated rectifier absorbing inductive kickback from synchronous buck controller during load steps.

Use Value: 100 V VARM withstands 80 V nominal rail overshoot up to 100 V for <1 µs, eliminating need for discrete clamp diodes.

Use Scenario: Secondary-side rectification in multi-phase +12 V VRM for desktop CPU power delivery.

IC Role / Device Role / Timing Role: Dual-anode layout supports phase-interleaved rectification, reducing output ripple current by 40%.

Use Value: 4.65 °C/W total Rth(j-c) enables 20 A continuous operation with 15 °C/W heatsink, meeting Intel VRM 13 thermal spec.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STPS20H100CG-TR	100 V VRRM, higher VF (0.62 V typ. @ 10 A, 125 °C), same TO-220FPAB package	Better suited for 48 V input systems; less optimal for 12–24 V outputs due to increased conduction loss	Select when system requires higher reverse voltage margin and can tolerate +0.105 V VF increase.
VB220L-E3/54	Single-diode TO-220AC package, 20 A IF(AV), no insulation, 0.55 V VF @ 10 A	Requires insulating hardware; unsuitable for shared-heatsink dual-rail designs; lower thermal resistance (2.3 °C/W)	Choose only for single-output, non-isolated applications where heatsink isolation is externally managed.

Compared with STPS20H100CG-TR, this part trades reverse voltage headroom for lower conduction loss in 12–24 V systems; versus VB220L-E3/54, it adds insulation and dual-anode flexibility at the cost of +2.35 °C/W total thermal resistance.

Availability

STPS20SM80CG-TR is available at Aetrix Electronics and suitable for notebook AC-DC adapters, LCD TV power supplies, and game console power modules requiring stable component supply, certified insulation, and high-temperature reliability.

Supply support for STPS20SM80CG-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 industrial, automotive, and consumer markets.

This device belongs to ST's Power Schottky Rectifier product line, engineered specifically for high-efficiency, high-frequency SMPS in space-constrained consumer power supplies where thermal management and electrical isolation are critical.

FAQ

What is the mounting torque specification for STPS20SM80CG-TR?

The recommended torque value for the mounting screw is 0.55 N·m, with a maximum allowable torque of 0.7 N·m. Exceeding this may damage the TO-220FPAB package or compromise the internal insulation barrier. Torque must be applied using a calibrated tool on the insulated tab, not the lead frame.

Does STPS20SM80CG-TR require a heatsink for 20 A continuous operation?

Yes - at 20 A total forward current (10 A per diode), junction temperature rises 46.5 °C above case temperature (4.65 °C/W × 10 A). With TC limited to 130 °C, ambient must stay below 83.5 °C when using a heatsink with ≤10 °C/W thermal resistance. Derating is required above 85 °C ambient.

How is avalanche capability validated for this part?

Avalanche performance is validated per ST application notes AN1768 and AN2025 using 10 µs pulses at 385 W peak power and 100 V VARM at Tj = 125 °C. Testing confirms no parametric shift or degradation after 1000 cycles, supporting use in unclamped inductive switching environments like synchronous rectifier turn-off.

Can STPS20SM80CG-TR replace STPS20SM80CT in existing designs?

Yes - both share identical electrical specs and die, but STPS20SM80CG-TR uses insulated TO-220FPAB while STPS20SM80CT uses non-insulated TO-220AB. Replacement requires verifying heatsink isolation: if original design used insulating hardware, the G-TR version eliminates it; if grounded heatsink was used, redesign is needed to avoid shorting A1/A2 to ground.

STPS20SM80CG-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):: 80 V

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

Voltage - Forward (Vf) (Max) @ If:: 780 mV @ 10 A

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

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 25 µA @ 80 V

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: D2PAK

STPS20SM80CG-TR FAQ

1.How can I place an order for STPS20SM80CG-TR through Aetrix?

Please submit a Request for Quotation (RFQ) for STPS20SM80CG-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 STPS20SM80CG-TR reliable?

The price and inventory of STPS20SM80CG-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPS20SM80CG-TR is usually 5 days.

3.What payment methods are accepted for STPS20SM80CG-TR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPS20SM80CG-TR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STPS20SM80CG-TR?

STPS20SM80CG-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STPS20SM80CG-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 STPS20SM80CG-TR?

For technical support, including STPS20SM80CG-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPS20SM80CG-TR requirements.

6.How does Aetrix verify that STPS20SM80CG-TR is sourced from the original manufacturer or authorized distributors?

All STPS20SM80CG-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 STPS20SM80CG-TR meets industry standards.

7.What is the process for return or replacement of STPS20SM80CG-TR?

All STPS20SM80CG-TR units undergo pre-shipment inspection (PSI). If there is an issue with STPS20SM80CG-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 STPS20SM80CG-TR part is unused and in its original packaging.

Return procedure for STPS20SM80CG-TR:

1.Submit a request within 90 days.

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

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