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

STMicroelectronics STPS20H100CT

Name: STPS20H100CT
Brand: STMicroelectronics
SKU: STPS20H100CT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STPS20H100CT

Manufacturer:: STMicroelectronics

Category:: Diode Arrays

Package:: TO-220-3

Datasheet:: STPS20H100CT.pdf

Description:: DIODE ARR SCHOTT 100V 10A TO-220

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Inventory:40,880

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Product details

Overview

STPS20H100CT from STMicroelectronics is a dual-center-tap Schottky rectifier in TO-220AB package, rated for 100 V repetitive peak reverse voltage and 2 × 10 A average forward current per diode at TC = 160 °C. It delivers low forward voltage drop (0.59 V typ. at 10 A, 125 °C), negligible switching losses, and avalanche-rated ruggedness-designed specifically for high-frequency SMPS in notebook adapters and on-board DC/DC converters.

For engineers reviewing the STPS20H100CT datasheet, STPS20H100CT pinout, STPS20H100CT application, or STPS20H100CT equivalent, this device is selected for high-efficiency secondary-side rectification where thermal robustness (Tj max = 175 °C), low conduction loss, and insulated mounting compatibility are critical in compact power supplies.

Technical Context

This dual-diode Schottky rectifier integrates two independent anode-cathode junctions sharing a common cathode terminal (center-tap configuration), enabling synchronous or complementary rectification topologies. Its low VF and high IF(AV) support continuous conduction mode operation in 100–500 kHz switch-mode supplies.

Thermal design relies on case-to-heatsink conduction (Rth(j–c) = 1.6 °C/W per diode), with avalanche energy rating (775 W, tp = 10 µs) ensuring transient overvoltage survivability. The TO-220AB package provides mechanical stability and direct heatsink mounting without isolation requirements.

Key Specifications

Parameter	Value and Actual Design Meaning
VRRM	100 V - Maximum reverse blocking capability without breakdown in SMPS secondary windings.
IF(AV) per diode	10 A at TC = 160 °C - Sustained DC output current per leg under heatsink-cooled conditions.
VF (typ)	0.59 V at 10 A, 125 °C - Low conduction loss directly reducing secondary-side power dissipation.
Tj (max)	+175 °C - Enables operation in thermally constrained enclosures without derating penalties.
IFSM	250 A (tp = 10 ms sine) - Withstands inrush and short-circuit surge currents in adapter applications.
Rth(j–c)	1.6 °C/W per diode - Predictable thermal path to heatsink for accurate junction temperature modeling.
IR (max)	6 mA at 125 °C, VR = 100 V - Minimal leakage preserves efficiency in standby and light-load modes.

Pinout & Package

TO-220AB package: 3-terminal through-hole plastic housing with metal tab (cathode-connected), standardized for mechanical mounting and thermal interface. Tab is electrically connected to cathode (pin 2).

Pin/Terminal	Circuit Role	Design Meaning
Pin 1 (Anode 1)	Anode of first Schottky diode	Connects to transformer secondary winding leg 1; carries forward current during positive half-cycle.
Pin 2 (Cathode)	Common cathode / center tap	Shared output node; connects to +VOUT rail and heatsink (electrically active); requires insulating washer if heatsink grounded.
Pin 3 (Anode 2)	Anode of second Schottky diode	Connects to transformer secondary winding leg 2; conducts during alternate half-cycle in full-wave center-tapped topology.

Key Features

Feature	Design Value
Negligible switching losses	Zero reverse recovery charge (Qrr ≈ 0) eliminates turn-off switching loss and EMI in high-frequency SMPS.
Avalanche rated	775 W repetitive peak avalanche power (tp = 10 µs, Tj = 125 °C) protects against inductive kickback in unclamped topologies.
High junction temperature capability	Rated for continuous operation up to +175 °C junction temperature, enabling smaller heatsinks in space-constrained adapters.
Low leakage current	≤6 mA at 125 °C and full 100 V reverse bias-minimizes standby power loss in energy-efficient designs.
ECOPACK®2 compliant	Meets RoHS and halogen-free requirements without compromising thermal or electrical performance in TO-220AB form factor.

Applications

Adapter for Notebook

On-board DC/DC Converter

Use Scenario: AC/DC adapter delivering 19 V @ 4.74 A for laptop charging.

IC Role / Device Role / Timing Role: Secondary-side synchronous rectifier replacing conventional Si diodes in center-tapped forward converter.

Use Value: Reduces conduction loss by ~40% vs. fast recovery diode, lowering thermal load and enabling 20% smaller heatsink.

Use Scenario: Point-of-load (POL) converter on server motherboard stepping 12 V down to 1.2 V for CPU core supply.

IC Role / Device Role / Timing Role: High-current output rectifier in multiphase buck-derived topology with center-tapped inductor.

Use Value: Enables >92% efficiency at 30 A per phase due to sub-0.6 V VF and zero Qrr, minimizing voltage droop during load transients.

LED Lighting Driver

Game Station Power Supply

Use Scenario: Constant-current LED driver for commercial downlight (48 V output, 1.5 A).

IC Role / Device Role / Timing Role: Output rectifier in quasi-resonant flyback with center-tapped secondary.

Use Value: Eliminates reverse recovery noise, improving EMI compliance and allowing smaller Y-capacitors in Class B emissions testing.

Use Scenario: Internal 12 V/5 V dual-rail power supply for gaming console mainboard and GPU subsystem.

IC Role / Device Role / Timing Role: Dual-leg rectifier in asymmetric half-bridge with center-tapped transformer.

Use Value: Supports 90%+ full-load efficiency across wide input line range (90–264 VAC) while maintaining <15 °C junction rise above ambient.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
Vishay VS-20CPH05	Same 100 V VRRM, but IF(AV) = 10 A per diode at TC = 125 °C (not 160 °C); VF = 0.72 V typ. at 10 A, 25 °C.	Limited thermal headroom in high-ambient environments; requires larger heatsink for same power density.	Select when cost sensitivity outweighs thermal margin needs and board-level airflow is assured.
ON Semiconductor MBR20100CT	Identical TO-220AB pinout and 100 V rating, but VF = 0.82 V typ. at 10 A, 25 °C; no avalanche rating specified.	Higher conduction loss increases junction temperature by ~12 °C at 20 A total output; unsuitable for unclamped inductive transients.	Prefer only in cost-driven, low-surge-risk applications with conservative thermal design and no avalanche requirement.

Compared with VS-20CPH05 and MBR20100CT, STPS20H100CT offers superior thermal capability (175 °C Tj max), lower VF at elevated temperature, and guaranteed avalanche ruggedness-making it the optimal choice for high-reliability, high-power-density adapters and industrial DC/DC modules.

Availability

STPS20H100CT is available at Aetrix Electronics and suitable for notebook adapters, on-board DC/DC converters, and LED lighting drivers requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for STPS20H100CT 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, power, MCU, and sensor solutions for automotive, industrial, and consumer markets.

STPS20H100CT belongs to ST's high-voltage Schottky rectifier product line, engineered specifically for high-frequency, high-efficiency secondary-side rectification in compact AC/DC and isolated DC/DC power supplies.

FAQ

Is STPS20H100CT suitable for surface-mount assembly?

No. STPS20H100CT uses the TO-220AB through-hole package with a metal tab designed for mechanical screw-mounting to a heatsink. It is not compatible with reflow soldering or pick-and-place automation. For SMT alternatives, consider ST's STPS20H100CG (D2PAK) variant.

What is the maximum recommended torque for the mounting screw?

The TO-220AB package specifies a recommended torque value of 0.55 N·m and a maximum torque of 0.70 N·m. Exceeding 0.70 N·m risks cracking the plastic body or deforming the leadframe, compromising thermal contact and mechanical reliability.

Does the common cathode (pin 2) require electrical isolation from the heatsink?

Yes. Pin 2 (cathode) is internally connected to the metal tab. If the heatsink is grounded or at a different potential, an insulating washer (e.g., mica or silicone pad) and shoulder washer must be used to prevent short circuits and ensure safe operation.

How does STPS20H100CT handle reverse recovery in high-frequency operation?

As a Schottky diode, STPS20H100CT has no minority-carrier storage and exhibits near-zero reverse recovery time (trr) and charge (Qrr). This eliminates switching loss and associated ringing during hard commutation, enabling clean, efficient operation up to 500 kHz without snubbers.

STPS20H100CT 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):: 100 V

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

Voltage - Forward (Vf) (Max) @ If:: 770 mV @ 10 A

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

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 4.5 µA @ 100 V

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220

STPS20H100CT FAQ

1.How can I place an order for STPS20H100CT through Aetrix?

Please submit a Request for Quotation (RFQ) for STPS20H100CT 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 STPS20H100CT reliable?

The price and inventory of STPS20H100CT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPS20H100CT is usually 5 days.

3.What payment methods are accepted for STPS20H100CT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPS20H100CT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STPS20H100CT?

STPS20H100CT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STPS20H100CT 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 STPS20H100CT?

For technical support, including STPS20H100CT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPS20H100CT requirements.

6.How does Aetrix verify that STPS20H100CT is sourced from the original manufacturer or authorized distributors?

All STPS20H100CT 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 STPS20H100CT meets industry standards.

7.What is the process for return or replacement of STPS20H100CT?

All STPS20H100CT units undergo pre-shipment inspection (PSI). If there is an issue with STPS20H100CT, 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 STPS20H100CT part is unused and in its original packaging.

Return procedure for STPS20H100CT:

1.Submit a request within 90 days.

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

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