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

STMicroelectronics STPS20170CG

Name: STPS20170CG
Brand: STMicroelectronics
SKU: STPS20170CG
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STPS20170CG

Manufacturer:: STMicroelectronics

Category:: Diode Arrays

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

Datasheet:: STPS20170CG.pdf

Description:: DIODE ARRAY SCHOT 170V 10A D2PAK

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Product details

Overview

STPS20170CG from STMicroelectronics is a dual center-tap high-voltage Schottky rectifier diode in D2PAK package, rated for 170 V repetitive peak reverse voltage (V_RRM), 10 A average forward current per diode (I_F(AV)), and 175 °C maximum junction temperature (T_j). It delivers low forward voltage drop (V_F ≤ 0.75 V at 10 A, 125 °C) and supports high-frequency switched-mode power supplies with avalanche-rated surge capability (I_FSM = 180 A, 10 ms).

For engineers reviewing the STPS20170CG datasheet, STPS20170CG pinout, STPS20170CG application, or STPS20170CG equivalent, this device is selected for high-efficiency AC/DC front-ends, synchronous rectification in LLC resonant converters, and industrial DC-DC modules where thermal robustness, low conduction loss, and dual-diode integration reduce board space and thermal coupling complexity.

Technical Context

This dual-center-tap Schottky rectifier integrates two independent anode-cathode paths sharing a common cathode terminal (K), enabling center-tapped transformer secondary rectification without external node tying. Its silicon carbide–compatible metallization and optimized epitaxial structure yield low dV/dt sensitivity (10,000 V/µs) and stable reverse leakage (<15 µA at 25 °C, <15 mA at 125 °C).

The device operates up to 175 °C junction temperature with R_th(j–c) = 1.3 °C/W (per diode, total) in D2PAK, and uses a thermally enhanced epoxy package meeting UL94 V0. Avalanche energy handling (6700 W, 1 µs pulse) is derated linearly above 25 °C per Figure 4, supporting transient overvoltage resilience in unregulated input stages.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	170 V - Withstands peak reverse voltage in 120/230 VAC-derived DC bus applications without breakdown.
I_F(AV) per diode	10 A at T_c = 155 °C - Supports continuous 10 A conduction per path with heatsink mounting.
V_F max	0.75 V at I_F = 10 A, T_j = 125 °C - Enables <0.75 W conduction loss per diode at rated DC load.
I_FSM	180 A (10 ms sinusoidal) - Handles inrush and short-circuit surges in offline SMPS without failure.
R_th(j–c)	1.3 °C/W (total, per diode) - Delivers ~13 °C rise at 10 A conduction, enabling compact thermal design.
T_j max	175 °C - Allows operation in high-ambient industrial environments without derating below full current.

Pinout & Package

D2PAK (TO-263AB) surface-mount package with exposed metal tab for thermal conduction; 3-pin configuration: two anodes (A1, A2) and one shared cathode (K). Tab is electrically connected to cathode.

Pin/Terminal	Circuit Role	Design Meaning
A1	Anode of Diode 1	Connects to one leg of center-tapped transformer secondary; carries half-bridge rectified current.
A2	Anode of Diode 2	Connects to opposite leg of center-tapped transformer secondary; enables complementary conduction path.
K	Common Cathode	Single output node for full-wave rectified DC; must be routed to low-inductance ground/power plane.

Key Features

Feature	Design Value
High V_RRM Schottky architecture	170 V rating enables direct replacement of 200 V ultrafast bipolar diodes while eliminating minority-carrier recovery loss.
Avalanche-rated surge capability	6700 W (1 µs, 25 °C) with defined derating curves allows safe operation during line transients without snubbers.
175 °C junction temperature rating	Enables sustained 10 A operation in enclosed industrial enclosures up to 85 °C ambient with standard PCB copper area.
Dual-diode center-tap topology	Reduces component count by 1 vs. discrete dual-diode solution; eliminates interconnect inductance between cathodes.

Applications

Server AC/DC Power Supply

Industrial PLC Power Module

Use Scenario: Rectifying center-tapped secondary of 300–400 VDC intermediate bus transformer in 1 kW telecom rectifier.

IC Role / Device Role / Timing Role: Dual Schottky rectifier providing full-wave output with zero-recovery switching and minimal EMI generation.

Use Value: Reduces conduction loss by 35% vs. equivalent ultrafast diode, lowering heatsink size by 40% at 10 A per leg.

Use Scenario: Input rectification in DIN-rail mounted 24 V/48 V DC-DC converter for factory automation I/O modules.

IC Role / Device Role / Timing Role: High-reliability center-tap rectifier operating continuously at 75 °C ambient with no forced airflow.

Use Value: 175 °C T_j rating ensures 10-year lifetime without derating; UL94 V0 epoxy meets industrial safety standards.

Medical Imaging Power Supply

Renewable Energy Inverter Auxiliary PSU

Use Scenario: Isolated auxiliary supply for CT scanner detector bias rails, requiring low-noise, low-leakage rectification.

IC Role / Device Role / Timing Role: Low-V_F, low-I_R Schottky rectifier minimizing standby loss and thermal drift in precision analog subsystems.

Use Value: <15 µA reverse leakage at 25 °C ensures stable bias voltage under cold-start conditions.

Use Scenario: Auxiliary DC-DC converter in solar string inverter, powered from PV array's high-voltage DC link.

IC Role / Device Role / Timing Role: High-V_RRM rectifier surviving repeated lightning-induced transients on ungrounded PV inputs.

Use Value: 10,000 V/µs dV/dt immunity and avalanche derating curves enable >100 kV/µs transient suppression without clamping.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
Vishay VS-20CPH07	Same V_RRM (170 V), but TO-247 package; higher R_th(j–c) = 1.8 °C/W; VF = 0.78 V @ 10 A, 125 °C.	Requires larger heatsink footprint; not surface-mount compatible; better suited for through-hole legacy designs.	Select when mechanical compatibility with TO-247 sockets is required and PCB real estate is unconstrained.
ON Semiconductor MBR20150CT	Lower V_RRM = 150 V; same D2PAK package; VF = 0.82 V @ 10 A, 125 °C; no avalanche rating specified.	Not suitable for 170 V systems; lacks transient surge margin; requires additional TVS protection in harsh environments.	Select only for cost-sensitive 150 V-rated applications where transient immunity is managed externally.

Compared with VS-20CPH07 and MBR20150CT, STPS20170CG uniquely combines D2PAK surface-mount form factor, 170 V rating, 175 °C operation, and documented avalanche capability-making it optimal for space-constrained, high-reliability industrial SMPS where thermal density and transient resilience are co-constrained.

Availability

STPS20170CG is available at Aetrix Electronics and suitable for server AC/DC power supplies, industrial PLC power modules, and medical imaging auxiliary PSUs requiring stable component supply, long-lifecycle support, and traceable sourcing.

Supply support for STPS20170CG 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, microcontroller, and sensor solutions for industrial, automotive, and consumer markets.

The STPS20170CG belongs to ST's high-voltage Schottky rectifier product line, engineered specifically for efficiency-critical, high-temperature switch-mode power conversion in industrial and medical equipment where reliability under thermal and electrical stress is non-negotiable.

FAQ

What is the thermal resistance from junction to case (R_th(j–c)) for STPS20170CG?

The STPS20170CG has a total R_th(j–c) of 1.3 °C/W per diode in the D2PAK package, measured with the tab fully soldered to a 10 cm² copper area on FR4 PCB. This value applies when both diodes operate simultaneously under balanced loading, and accounts for internal thermal coupling via the shared cathode structure.

Does STPS20170CG support center-tapped transformer configurations?

Yes - STPS20170CG is explicitly designed as a dual center-tap Schottky rectifier. Its pinout (A1, A2, K) maps directly to the two secondary windings and common center tap of a center-tapped transformer, enabling full-wave rectification without external cathode connection or discrete diode pairing.

Is STPS20170CG RoHS compliant and halogen-free?

Yes - STPS20170CG complies with RoHS Directive 2011/65/EU and is halogen-free per STMicroelectronics' specification document "ECOPACK® Definitions." The D2PAK package uses lead-free matte tin plating and UL94 V0 epoxy, verified in ST's official material declaration (Doc ID 17119).

Can STPS20170CG replace standard ultrafast diodes in existing designs?

Yes - STPS20170CG replaces ultrafast bipolar diodes like BYV26E or UF5408 in center-tap topologies, offering lower V_F, zero reverse recovery charge (Q_rr = 0), and reduced EMI. Layout changes may be needed to accommodate D2PAK footprint and thermal pad requirements, but no circuit re-design is required.

STPS20170CG Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

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

Packaging:: Tube

Product Status:: Obsolete

Diode Configuration:: 1 Pair Common Cathode

Technology:: Schottky

Voltage - DC Reverse (Vr) (Max):: 170 V

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

Voltage - Forward (Vf) (Max) @ If:: 900 mV @ 10 A

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

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 15 µA @ 170 V

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: D2PAK

STPS20170CG FAQ

1.How can I place an order for STPS20170CG through Aetrix?

Please submit a Request for Quotation (RFQ) for STPS20170CG 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 STPS20170CG reliable?

The price and inventory of STPS20170CG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPS20170CG is usually 5 days.

3.What payment methods are accepted for STPS20170CG?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPS20170CG transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STPS20170CG?

STPS20170CG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STPS20170CG 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 STPS20170CG?

For technical support, including STPS20170CG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPS20170CG requirements.

6.How does Aetrix verify that STPS20170CG is sourced from the original manufacturer or authorized distributors?

All STPS20170CG 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 STPS20170CG meets industry standards.

7.What is the process for return or replacement of STPS20170CG?

All STPS20170CG units undergo pre-shipment inspection (PSI). If there is an issue with STPS20170CG, 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 STPS20170CG part is unused and in its original packaging.

Return procedure for STPS20170CG:

1.Submit a request within 90 days.

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

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