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

STMicroelectronics STPSC20065WY

Name: STPSC20065WY
Brand: STMicroelectronics
SKU: STPSC20065WY
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STPSC20065WY

Manufacturer:: STMicroelectronics

Category:: Single Diodes

Package:: DO-247-2 (Straight Leads)

Datasheet:: STPSC20065WY.pdf

Description:: DIODE SIL CARBIDE 650V 20A DO247

Quantity:: RFQ Add To RFQ list

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Product details

Overview

STPSC20065WY from STMicroelectronics is an automotive-grade 650 V, 20 A silicon carbide Schottky diode in DO-247 package, qualified to AEC-Q101, with no reverse recovery charge, 1.30 V typical forward voltage at 20 A and 25 °C, and junction temperature range from –40 °C to +175 °C. It is engineered for high-efficiency PFC stages in on-board chargers and industrial AC-DC converters operating under hard-switching conditions.

For engineers reviewing the STPSC20065WY datasheet, STPSC20065WY pinout, STPSC20065WY application, or STPSC20065WY equivalent, key selection criteria include zero reverse recovery charge, temperature-independent switching behavior, high surge robustness (70 A @ 125 °C), low thermal resistance (0.60 °C/W typ.), and ECOPACK®2 compliance for automotive power systems.

Technical Context

This SiC Schottky diode replaces conventional silicon fast recovery diodes in high-frequency PFC boost converters by eliminating reverse recovery losses and associated EMI. Its wide bandgap enables stable 650 V blocking capability with minimal capacitance variation across temperature and voltage.

The device operates with negligible ringing at turn-off due to purely capacitive turn-off behavior, and its conduction loss follows P = 1.02 × IF(AV) + 0.039 × IF²(RMS). Junction-to-case thermal resistance of 0.60 °C/W supports high-power density thermal design when mounted on heatsinks with recommended torque of 0.8 N·m.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	650 V - Enables use in 400 V AC-input PFC stages with sufficient margin against line surges and transients.
I_F(AV)	20 A at T_c = 140 °C - Sustains continuous conduction in high-power industrial and automotive PFC designs.
V_F (typ.)	1.30 V @ 20 A, 25 °C - Reduces conduction loss vs. Si FRD alternatives, improving system efficiency by ~0.5–1.2% in 3–6 kW PFC.
I_FSM	70 A @ 10 ms, T_c = 125 °C - Withstands inrush and overload transients without degradation in automotive OBC startup.
R_th(j-c)	0.60 °C/W (typ.) - Enables compact heatsink sizing and simplifies thermal interface design in space-constrained EV power modules.
C_j	1250 pF @ 0 V, 1 MHz - Low junction capacitance minimizes displacement current and dv/dt-induced gate noise in GaN/SiC hybrid topologies.
T_j range	–40 °C to +175 °C - Supports operation in under-hood environments and high-ambient industrial enclosures without derating.

Pinout & Package

STPSC20065WY is housed in a DO-247 through-hole package with two terminals: Anode (A) and Cathode (K). The package features a metal tab for direct heatsink mounting and is optimized for high-current conduction and low-inductance layout.

Pin/Terminal	Circuit Role	Design Meaning
Anode (A)	Current entry point during forward conduction	Connected to AC input side of PFC boost inductor; must be routed with low-inductance path to minimize voltage overshoot.
Cathode (K)	Current exit point during forward conduction; electrically tied to heatsink tab	Common reference node for output capacitor and controller ground; requires isolation if heatsink is not at system ground potential.

Key Features

Feature	Design Value
No reverse recovery charge	Eliminates switching loss and EMI spikes in hard-switched PFC, enabling >98% efficiency at 100 kHz.
Temperature-independent switching	Capacitive turn-off behavior remains stable from –40 °C to +175 °C, ensuring consistent timing in thermal cycling environments.
AEC-Q101 qualification	Validated for automotive powertrain and charging applications including OBCs, DC-DC converters, and traction inverters.
High surge capability	70 A non-repetitive surge at 125 °C case temperature ensures reliability during cold cranking and grid fault events.
ECOPACK®2 compliance	Halogen-free, RoHS-compliant construction meets automotive environmental standards without compromising thermal or electrical performance.

Applications

On-Board Charger (OBC)

Industrial AC-DC Power Supply

Use Scenario: 6.6 kW bidirectional OBC with interleaved PFC stage operating at 100–200 kHz.

IC Role / Device Role / Timing Role: High-voltage, high-current freewheeling diode in boost rectifier leg; handles 20 A average forward current with zero reverse recovery.

Use Value: Enables >98.5% PFC efficiency and reduces heatsink volume by 35% versus Si FRD, while meeting CISPR-25 Class 5 EMI limits.

Use Scenario: 5 kW telecom rectifier with active PFC front-end in datacenter PSU.

IC Role / Device Role / Timing Role: Output rectifier in continuous conduction mode (CCM) boost converter; sustains 20 A DC load with minimal conduction loss.

Use Value: Delivers 0.8 °C/W effective thermal resistance with standard copper heatsink, reducing thermal derating and extending MTBF beyond 100,000 hours.

Solar Microinverter

EV Charging Station (AC Level 2)

Use Scenario: Single-phase 350–400 Vdc microinverter with dual-stage topology (PFC + inverter).

IC Role / Device Role / Timing Role: Input-side Schottky diode in Vienna rectifier configuration; blocks 650 V reverse voltage with <300 µA leakage at 150 °C.

Use Value: Maintains <0.5% efficiency drop from 25 °C to 150 °C junction temperature, supporting passive cooling in rooftop enclosures.

Use Scenario: 7.4 kW wallbox charger with integrated PFC and isolated DC-DC stage.

IC Role / Device Role / Timing Role: Primary rectifier in high-frequency PFC boost; rated for 20 A continuous and 70 A surge during plug-in transient.

Use Value: PPAP-capable qualification and –40 °C to +175 °C operation ensure compliance with SAE J1772 and ISO 15118 requirements.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
C3D02065E (Wolfspeed)	Same 650 V/20 A rating, but TO-247-2L package; R_th(j-c) = 0.75 °C/W; VF = 1.45 V (typ.) at 20 A.	Higher thermal resistance and forward voltage reduce efficiency in compact OBCs; requires larger heatsink footprint.	Select when legacy TO-247 footprint compatibility is required and thermal margin exceeds 15 °C.
SS12065 (UnitedSiC)	D²PAK-3L package; lower I_F(AV) = 16 A; VF = 1.25 V (typ.); no AEC-Q101 qualification.	Not automotive-qualified; limited surge rating (55 A @ 125 °C); unsuitable for PPAP-controlled OBC programs.	Prefer for cost-sensitive industrial supplies where AEC-Q101 and 70 A surge are not mandatory.

Compared with C3D02065E and SS12065, STPSC20065WY delivers superior thermal performance (0.60 °C/W), lower conduction loss (1.30 V), and full automotive qualification-making it the optimal choice for space-constrained, high-reliability PFC designs requiring PPAP support and extended temperature operation.

Availability

STPSC20065WY is available at Aetrix Electronics and suitable for on-board chargers, industrial AC-DC power supplies, and solar microinverters requiring stable component supply, long-term lifecycle assurance, and automotive-grade traceability.

Supply support for STPSC20065WY 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.

ST's SiC power diode product line targets high-efficiency, high-reliability PFC and rectification applications in electric vehicle charging, renewable energy, and industrial motor drives-leveraging proprietary silicon carbide process technology for robust 650 V operation.

FAQ

Is STPSC20065WY pin-compatible with silicon-based TO-220AC diodes?

No-STPSC20065WY uses the DO-247 package, which has different mechanical dimensions, terminal spacing, and mounting torque (0.8 N·m) than TO-220AC. While both are 2-terminal through-hole devices, PCB footprints and heatsink interfaces are not interchangeable. Thermal and electrical performance also differ significantly due to SiC material advantages.

What is the maximum allowable case temperature for continuous 20 A operation?

The datasheet specifies I_F(AV) = 20 A at T_c = 140 °C. Operation above this case temperature requires derating per Figure 3; at T_c = 150 °C, maximum average current drops to ~17.5 A. Exceeding 140 °C continuously violates the rated condition and risks accelerated parametric drift or thermal runaway.

Does STPSC20065WY require a gate resistor or snubber network?

No-unlike MOSFETs or IGBTs, this Schottky diode has no gate and exhibits purely capacitive turn-off behavior. Snubbers are unnecessary in properly laid-out PFC circuits. However, minimizing parasitic inductance in the cathode loop remains critical to suppress voltage overshoot during high di/dt commutation.

Can STPSC20065WY be used in synchronous rectification topologies?

No-it is a unidirectional Schottky diode, not a controllable switch. Synchronous rectification requires actively gated devices (e.g., MOSFETs or SiC FETs) to replace diode conduction. STPSC20065WY serves only as a passive, high-performance freewheeling or boost rectifier in non-synchronous topologies.

STPSC20065WY Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: ECOPACK®2

Package/Case:: DO-247-2 (Straight Leads)

Packaging:: Tube

Product Status:: Active

Technology:: SiC (Silicon Carbide) Schottky

Voltage - DC Reverse (Vr) (Max):: 650 V

Current - Average Rectified (Io):: 20A

Voltage - Forward (Vf) (Max) @ If:: 1.45 V @ 20 A

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

Reverse Recovery Time (trr):: 0 ns

Current - Reverse Leakage @ Vr:: 300 µA @ 650 V

Capacitance @ Vr, F:: 1250pF @ 0V, 1MHz

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Through Hole

Supplier Device Package:: DO-247

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

STPSC20065WY FAQ

1.How can I place an order for STPSC20065WY through Aetrix?

Please submit a Request for Quotation (RFQ) for STPSC20065WY 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 STPSC20065WY reliable?

The price and inventory of STPSC20065WY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPSC20065WY is usually 5 days.

3.What payment methods are accepted for STPSC20065WY?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPSC20065WY transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STPSC20065WY?

STPSC20065WY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STPSC20065WY 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 STPSC20065WY?

For technical support, including STPSC20065WY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPSC20065WY requirements.

6.How does Aetrix verify that STPSC20065WY is sourced from the original manufacturer or authorized distributors?

All STPSC20065WY 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 STPSC20065WY meets industry standards.

7.What is the process for return or replacement of STPSC20065WY?

All STPSC20065WY units undergo pre-shipment inspection (PSI). If there is an issue with STPSC20065WY, 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 STPSC20065WY part is unused and in its original packaging.

Return procedure for STPSC20065WY:

1.Submit a request within 90 days.

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

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