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Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Single Diodes

STMicroelectronics STPSC20H12GY-TR

Name: STPSC20H12GY-TR
Brand: STMicroelectronics
SKU: STPSC20H12GY-TR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STPSC20H12GY-TR

Manufacturer:: STMicroelectronics

Category:: Single Diodes

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

Datasheet:: STPSC20H12GY-TR.pdf

Description:: DIODE SIL CARB 1.2KV 20A D2PAK

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Product details

Overview

STPSC20H12GY-TR from STMicroelectronics is a 1200 V, 20 A silicon carbide (SiC) Schottky power diode in D²PAK package, designed for high-efficiency PFC stages in on-board chargers and industrial SMPS. It delivers zero reverse recovery, temperature-independent switching, 1.35 V typical forward voltage at 20 A, and operates up to 175 °C junction temperature.

For engineers reviewing the STPSC20H12GY-TR datasheet, STPSC20H12GY-TR pinout, STPSC20H12GY-TR application, or STPSC20H12GY-TR equivalent, key selection criteria include its 1200 V blocking capability, negligible capacitive turn-off behavior, high surge robustness (140 A IFSM), and AEC-Q101 qualification for automotive-grade reliability.

Technical Context

This SiC Schottky diode replaces conventional silicon fast recovery diodes and SiC JBS devices in hard-switching PFC and boost converters. Its wide bandgap enables full 1200 V rating with low VF and near-zero Qrr - eliminating reverse recovery losses and associated EMI.

The device exhibits stable dynamic performance across -40 °C to +175 °C: VF increases only ~0.4 V from 25 °C to 150 °C, while IR remains under 800 µA at 150 °C and 1200 V, and junction capacitance drops from 1650 pF (0 V) to 110 pF (800 V), enabling predictable snubber design.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	1200 V - supports 800 V DC-link systems with >50% safety margin for transient overvoltage
I_F(AV)	20 A - rated average forward current at T_c = 155 °C, enabling compact heatsink sizing
V_F (typ.)	1.35 V @ 20 A, 25 °C - reduces conduction loss to ~27 W vs. ~40 W for comparable Si diode
I_FSM	140 A @ 10 ms, T_c = 25 °C - withstands inrush and overload transients without failure
R_th(j-c)	0.30 °C/W (typ.) - enables thermal management with <10 °C rise per 30 W dissipation
C_j	110 pF @ 800 V - low stored charge minimizes capacitive turn-off loss and EMI generation
T_j max	175 °C - allows operation in high-ambient environments without derating

Pinout & Package

The STPSC20H12GY-TR is housed in a surface-mount D²PAK (TO-263) package with isolated anode and cathode terminals. Creepage distance between anode and cathode is 5.38 mm minimum (with top coating), meeting IEC 60664-1 for reinforced insulation in high-voltage applications.

Pin/Terminal	Circuit Role	Design Meaning
Anode (Tab)	High-side power input terminal	Electrically connected to metal tab; requires insulated mounting or isolation pad for PCB ground clearance
Cathode (Pin 1)	Low-side output/return path	Soldered to PCB trace; carries full load current and must be routed with low-inductance layout

Key Features

Feature	Design Value
No reverse recovery (Q_rr ≈ 0)	Eliminates switching loss spikes and diode-induced ringing in hard-switched PFC boost stages
AEC-Q101 qualified	Validated for automotive on-board charger use with extended temperature cycling and humidity testing
D²PAK HV creepage ≥5.38 mm	Enables direct use in 1000 V AC-input systems without additional slotting or isolation barriers
Robust high-voltage periphery	Prevents edge breakdown under partial discharge stress, extending lifetime in high-dV/dt environments

Applications

On-Board Charger (OBC)

Industrial PFC Module

Use Scenario: Boost PFC stage in 11 kW bi-directional OBC for EVs operating from 380–480 V AC input.

IC Role / Device Role / Timing Role: SiC Schottky diode in continuous conduction mode (CCM) boost rectifier.

Use Value: Enables >98.5% system efficiency at full load by eliminating Q_rr-related losses and reducing heatsink volume by 40%.

Use Scenario: Front-end PFC in 15 kW server PSU or telecom rectifier with universal AC input.

IC Role / Device Role / Timing Role: Output rectifier in interleaved boost converter operating at 70–100 kHz.

Use Value: Maintains stable VF and low C_j across ambient temperatures up to 70 °C, avoiding efficiency drift.

Solar Inverter DC Link

High-Voltage DC-DC Converter

Use Scenario: DC link clamping and freewheeling in 1500 V string inverters with transformerless topology.

IC Role / Device Role / Timing Role: Bidirectional clamp diode handling 1200 V DC bus transients and leakage currents.

Use Value: Withstands repetitive 1200 V reverse bias with <800 µA leakage at 150 °C, ensuring long-term insulation integrity.

Use Scenario: Isolated secondary-side rectification in 1 kV input DC-DC converters for railway traction control.

IC Role / Device Role / Timing Role: High-reliability output diode in phase-shifted full-bridge with synchronous rectification assist.

Use Value: 140 A non-repetitive surge rating absorbs fault currents during short-circuit events without bond-wire fusing.

Equivalent & Alternatives

The following parts are listed as comparable options for similar SiC Schottky diode applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
C3D20120D (Wolfspeed)	Same 1200 V/20 A rating; VF = 1.5 V (typ.) at 20 A; R_th(j-c) = 0.45 °C/W	Higher VF increases conduction loss by ~3 W; lower thermal conductivity requires larger heatsink	Preferred where supply chain diversification is critical and 0.15 V higher VF is acceptable
IXYS XDH20120A	1200 V/20 A; VF = 1.45 V (typ.); I_FSM = 125 A; D²PAK HV package with 5.4 mm creepage	Lower surge rating limits use in high-inrush OBC designs; identical creepage supports same isolation layout	Consider when legacy IXYS sourcing preference exists and peak surge demands are ≤125 A

Compared with C3D20120D and XDH20120A, STPSC20H12GY-TR offers the lowest VF (1.35 V) and highest I_FSM (140 A), making it optimal for thermally constrained, high-transient automotive PFC designs where efficiency and ruggedness are prioritized.

Availability

STPSC20H12GY-TR is available at Aetrix Electronics and suitable for on-board chargers, industrial PFC modules, solar inverter DC links, and high-voltage DC-DC converters requiring stable component supply, AEC-Q101 compliance, and high-temperature reliability.

Supply support for STPSC20H12GY-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 microcontrollers, power devices, sensors, and analog ICs for automotive, industrial, and consumer markets.

The STPSC series belongs to ST's high-voltage SiC power diode product line, engineered specifically for next-generation PFC, EV charging, and renewable energy systems demanding zero-recovery, high-temperature operation, and reinforced insulation.

FAQ

What is the maximum allowable case temperature for continuous operation?

The STPSC20H12GY-TR is rated for I_F(AV) = 20 A at T_c = 155 °C. Its absolute maximum junction temperature is 175 °C, and with R_th(j-c) = 0.30 °C/W (typ.), sustained case temperatures above 155 °C require active derating of forward current to prevent thermal runaway.

Does this diode require a gate driver or external control circuitry?

No - the STPSC20H12GY-TR is an uncontrolled two-terminal power diode with no gate or control terminal. It conducts when forward-biased and blocks when reverse-biased, requiring no driver, biasing, or timing signals. Its behavior is purely passive and voltage-dependent.

How does the D²PAK HV package differ from standard D²PAK in layout requirements?

The D²PAK HV variant uses extended creepage geometry: anode-to-cathode spacing is increased to ≥5.38 mm (vs. ~3.5 mm in standard D²PAK), requiring wider isolation slots or enlarged keep-out zones on the PCB. Footprint dimensions remain identical, but copper pour and solder mask must respect the enhanced clearance envelope.

Can STPSC20H12GY-TR replace silicon diodes in existing 1200 V designs without layout changes?

Yes - it shares the same D²PAK footprint and thermal interface as legacy silicon diodes, but layout optimization is recommended: reduce loop inductance around the cathode pin, ensure tab isolation meets 5.38 mm creepage, and verify thermal vias support 0.30 °C/W R_th(j-c) to fully exploit its low-loss advantage.

STPSC20H12GY-TR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: ECOPACK®2

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

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: SiC (Silicon Carbide) Schottky

Voltage - DC Reverse (Vr) (Max):: 1200 V

Current - Average Rectified (Io):: 20A

Voltage - Forward (Vf) (Max) @ If:: 1.5 V @ 20 A

Speed:: No Recovery Time > 500mA (Io)

Reverse Recovery Time (trr):: 0 ns

Current - Reverse Leakage @ Vr:: 120 µA @ 1200 V

Capacitance @ Vr, F:: 1650pF @ 0V, 1MHz

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: D2PAK

Operating Temperature - Junction:: -40°C ~ 175°C

STPSC20H12GY-TR FAQ

1.How can I place an order for STPSC20H12GY-TR through Aetrix?

Please submit a Request for Quotation (RFQ) for STPSC20H12GY-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 STPSC20H12GY-TR reliable?

The price and inventory of STPSC20H12GY-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPSC20H12GY-TR is usually 5 days.

3.What payment methods are accepted for STPSC20H12GY-TR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPSC20H12GY-TR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STPSC20H12GY-TR?

STPSC20H12GY-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STPSC20H12GY-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 STPSC20H12GY-TR?

For technical support, including STPSC20H12GY-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPSC20H12GY-TR requirements.

6.How does Aetrix verify that STPSC20H12GY-TR is sourced from the original manufacturer or authorized distributors?

All STPSC20H12GY-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 STPSC20H12GY-TR meets industry standards.

7.What is the process for return or replacement of STPSC20H12GY-TR?

All STPSC20H12GY-TR units undergo pre-shipment inspection (PSI). If there is an issue with STPSC20H12GY-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 STPSC20H12GY-TR part is unused and in its original packaging.

Return procedure for STPSC20H12GY-TR:

1.Submit a request within 90 days.

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

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