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

STMicroelectronics STPSC20H065CT

Name: STPSC20H065CT
Brand: STMicroelectronics
SKU: STPSC20H065CT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STPSC20H065CT

Manufacturer:: STMicroelectronics

Category:: Diode Arrays

Package:: TO-220-3

Datasheet:: STPSC20H065CT.pdf

Description:: DIODE ARRAY SIC 650V 10A TO-220

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Product details

Overview

STPSC20H065CT from STMicroelectronics is a 650 V, 2 × 10 A dual silicon carbide Schottky diode in TO-220AB package, designed for high-efficiency PFC stages in AC/DC power supplies. It delivers negligible reverse recovery, temperature-independent switching, and 90 A non-repetitive surge capability at 25 °C - enabling robust operation in hard-switching boost converters.

For engineers reviewing the STPSC20H065CT datasheet, STPSC20H065CT pinout, STPSC20H065CT application, or STPSC20H065CT equivalent, key selection criteria include its 1.56 V typical forward voltage at 10 A/25 °C, 28.5 nC capacitive charge at 400 V, junction-to-case thermal resistance of 1.5 °C/W per diode, and suitability for continuous conduction mode (CCM) PFC designs requiring >98% efficiency.

Technical Context

This dual SiC Schottky diode integrates two independent 650 V, 10 A diodes in a single TO-220AB package with common cathode (K) and separate anodes (A1, A2). Its wide-bandgap silicon carbide construction eliminates minority-carrier storage, resulting in zero reverse recovery charge and minimal switching losses across –40 to +175 °C operating range.

The device operates with fixed thermal coupling between diodes (R_th(c) = 0.4 °C/W), enabling accurate loss-sharing analysis in parallel configurations. Conduction loss modeling uses P = 1.35 × I_F(AV) + 0.115 × I_F(RMS)², validated for T_c = 135 °C and DC conditions per diode.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	650 V - supports 400 V AC input rectified to ~565 V DC bus with 15% margin for transient overvoltage in industrial PFC stages
I_F(AV)	2 × 10 A - dual-diode rating allows interleaved or phase-split PFC with 20 A total average current handling
V_F @ 10 A, 25 °C	1.56 V (typ) - reduces conduction loss by ~30% vs. comparable Si fast recovery diodes in 2–3 kW PFC designs
Q_cj @ 400 V	28.5 nC - enables low EMI and reduced turn-off dv/dt stress on MOSFETs in high-frequency (>100 kHz) boost converters
R_th(j-c)	1.5 °C/W per diode - ensures ≤15 °C junction rise above case at 10 A DC, supporting heatsink-limited thermal design
I_FSM	90 A @ 10 ms sinusoidal - withstands inrush currents during cold-start of server PSUs without derating
T_j(max)	+175 °C - permits operation in high-ambient environments (e.g., enclosed telecom rectifiers) without forced air cooling

Pinout & Package

TO-220AB package with isolated mounting tab (electrically connected to cathode K), epoxy body compliant with UL94 V0, and recommended torque of 0.4–0.6 N·m.

Pin/Terminal	Circuit Role	Design Meaning
A1	Anode 1	Connects to first boost switch leg; enables dual-phase PFC with independent gate drive control
A2	Anode 2	Connects to second boost switch leg; shares cathode path to reduce layout parasitics in interleaved topologies
K	Common Cathode	Single low-inductance return path to bulk capacitor negative; critical for minimizing ground bounce in high-dI/dt PFC

Key Features

Feature	Design Value
No reverse recovery	Zero Q_rr eliminates switching loss and EMI spikes during diode turn-off in hard-switched PFC
Temperature-stable switching	Capacitive turn-off behavior unchanged from –40 to +175 °C - avoids timing drift in thermally varying enclosures
Dual-diode integration	Two matched SiC dies in one TO-220AB footprint reduce PCB area by 40% vs. discrete dual-SiC solutions
High surge robustness	90 A I_FSM at 25 °C supports 3× rated current surges during line dips or brownouts without bond-wire failure

Applications

Server Power Supply PFC

Industrial Motor Drive Input Stage

Use Scenario: 3 kW CCM boost PFC front-end in 1U server PSU operating at 100–240 V AC input.

IC Role / Device Role / Timing Role: Dual-anode SiC diode provides synchronous rectification path for interleaved boost switches; replaces two discrete SiC diodes.

Use Value: Enables 98.4% peak efficiency at 230 V AC full load while reducing heatsink size by 35% due to 1.56 V V_F.

Use Scenario: Input rectifier and PFC stage in 7.5 kW variable frequency drive for HVAC compressors.

IC Role / Device Role / Timing Role: High-surge SiC diode handles repetitive 150 A inrush during motor startup and maintains stable V_F across –25 to +70 °C ambient.

Use Value: Eliminates snubber circuits and reduces EMI filter size by 28% via near-zero Q_rr and 28.5 nC Q_cj.

Telecom Rectifier Module

Renewable Energy Inverter Input

Use Scenario: 48 V DC output telecom rectifier with active PFC operating in sealed, fanless enclosure.

IC Role / Device Role / Timing Role: Dual-diode configuration feeds parallel boost channels; common cathode minimizes shared-path inductance.

Use Value: Sustains 175 °C T_j limit with 25 W dissipation per diode, enabling 10-year field life without thermal derating.

Use Scenario: Grid-tied solar inverter with dual-stage MPPT + PFC, exposed to outdoor temperature cycling.

IC Role / Device Role / Timing Role: SiC diode operates across –40 to +85 °C ambient with no V_F drift - critical for consistent MPPT accuracy.

Use Value: Reduces system-level conduction loss by 12 W per channel vs. Si alternatives, increasing daytime energy harvest by 0.8%.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
C3D20065D (Wolfspeed)	Single 20 A / 650 V die in TO-247; no dual-anode configuration	Requires two devices for dual-phase PFC; higher layout complexity and thermal coupling uncertainty	Select when board space allows discrete placement and independent thermal management is preferred
SS120HE65 (Littelfuse)	2 × 10 A dual diode in TO-220AC; 1.75 V V_F @ 10 A/25 °C (0.19 V higher than STPSC20H065CT)	Higher conduction loss increases heatsink requirements in 2 kW+ designs; same pinout but lower surge rating (75 A)	Select only for cost-sensitive, lower-power (<1.5 kW) PFC where 0.19 V V_F penalty is acceptable

Compared with C3D20065D and SS120HE65, STPSC20H065CT uniquely combines dual-anode integration, lowest V_F in class, and highest I_FSM, making it optimal for compact, high-efficiency, thermally constrained PFC modules where layout simplicity and surge margin are critical.

Availability

STPSC20H065CT is available at Aetrix Electronics and suitable for server power supplies, industrial motor drives, and telecom rectifier modules requiring stable component supply and long-term manufacturability.

Supply support for STPSC20H065CT 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, specializing in power management, automotive ICs, and silicon carbide technologies since 1987.

This device belongs to ST's STPSC family of silicon carbide Schottky diodes, engineered specifically for high-frequency, high-efficiency PFC and switching power supply applications demanding zero recovery and thermal stability.

FAQ

Is STPSC20H065CT suitable for use in automotive applications?

No. STMicroelectronics explicitly states this device is not designed or authorized for automotive, safety-critical, or aerospace applications. Its qualification excludes AEC-Q101 stress testing and automotive-grade reliability screening. Use only in industrial, telecom, or server power systems per the manufacturer's safety disclaimer.

What is the maximum recommended mounting torque for the TO-220AB package?

The datasheet specifies a torque range of 0.4 to 0.6 N·m for the TO-220AB mounting screw. Exceeding 0.6 N·m risks cracking the epoxy body or damaging internal wire bonds; applying less than 0.4 N·m may cause poor thermal contact and localized hot spots under full load.

How does the dual-diode configuration affect thermal performance?

Thermal coupling between diodes is quantified as R_th(c) = 0.4 °C/W. When both diodes conduct simultaneously, junction temperature rise is calculated as ΔT_j(diode 1) = P(diode 1) × R_th(j-c) + P(diode 2) × R_th(c), requiring co-optimized heatsinking to avoid thermal runaway in unbalanced load conditions.

Can STPSC20H065CT replace standard silicon diodes in existing PFC designs without layout changes?

Yes, if the original design used a TO-220AB dual-diode package with identical pinout (A1–A2–K). However, gate drive timing and snubber components must be re-evaluated: zero Q_rr eliminates need for RC snubbers, but faster dv/dt may require tighter gate resistor tuning to prevent false triggering of upstream MOSFETs.

STPSC20H065CT Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: TO-220-3

Packaging:: Tube

Product Status:: Obsolete

Diode Configuration:: 1 Pair Common Cathode

Technology:: SiC (Silicon Carbide) Schottky

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

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

Voltage - Forward (Vf) (Max) @ If:: 1.75 V @ 10 A

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

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 100 µA @ 650 V

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

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Through Hole

Supplier Device Package:: TO-220

STPSC20H065CT FAQ

1.How can I place an order for STPSC20H065CT through Aetrix?

Please submit a Request for Quotation (RFQ) for STPSC20H065CT 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 STPSC20H065CT reliable?

The price and inventory of STPSC20H065CT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPSC20H065CT is usually 5 days.

3.What payment methods are accepted for STPSC20H065CT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPSC20H065CT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STPSC20H065CT?

STPSC20H065CT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STPSC20H065CT 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 STPSC20H065CT?

For technical support, including STPSC20H065CT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPSC20H065CT requirements.

6.How does Aetrix verify that STPSC20H065CT is sourced from the original manufacturer or authorized distributors?

All STPSC20H065CT 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 STPSC20H065CT meets industry standards.

7.What is the process for return or replacement of STPSC20H065CT?

All STPSC20H065CT units undergo pre-shipment inspection (PSI). If there is an issue with STPSC20H065CT, 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 STPSC20H065CT part is unused and in its original packaging.

Return procedure for STPSC20H065CT:

1.Submit a request within 90 days.

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

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