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

STMicroelectronics STPSC8065D

Name: STPSC8065D
Brand: STMicroelectronics
SKU: STPSC8065D
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STPSC8065D

Manufacturer:: STMicroelectronics

Category:: Single Diodes

Package:: TO-220-2

Datasheet:: STPSC8065D.pdf

Description:: DIODE SIL CARB 650V 8A TO220AC

Quantity:: RFQ Add To RFQ list

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Inventory:45

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Product details

Overview

STPSC8065D from STMicroelectronics is a 650 V, 8 A average forward current silicon carbide Schottky diode in TO-220AC package, featuring negligible reverse recovery, temperature-independent switching, and 1.30 V typical forward voltage at 8 A and 25 °C. It is engineered for high-efficiency PFC stages in industrial AC-DC power supplies.

For engineers reviewing the STPSC8065D datasheet, STPSC8065D pinout, STPSC8065D application, or STPSC8065D equivalent, key selection criteria include its 175 °C maximum junction temperature, 46 A non-repetitive surge rating, 28 nC capacitive charge at 400 V, low thermal resistance (1.1 °C/W typ.), and ECOPACK®2-compliant TO-220AC mechanical construction.

Technical Context

This SiC Schottky diode replaces conventional silicon fast recovery diodes in continuous conduction mode (CCM) and transition mode (TM) PFC boost converters. Its zero reverse recovery charge eliminates turn-off switching losses and associated EMI, while its junction capacitance (540 pF at 0 V, 45 pF at 400 V) enables stable high-frequency operation up to 300 kHz.

The device operates with full-rated performance from –40 °C to 175 °C junction temperature, supported by a low R_th(j-c) of 1.1 °C/W (typ.) and robust surge capability (38 A at T_c = 125 °C, 10 ms sine). Its conduction loss model (P = 0.95 × I_F(AV) + 0.087 × I_F(RMS)²) is validated across thermal and load conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	650 V - supports universal-input (85–265 V_AC) PFC designs with ≥2× safety margin against line transients
I_F(AV)	8 A @ T_C = 150 °C - defines continuous DC output current capability in thermally constrained heatsink layouts
V_F (typ.)	1.30 V @ I_F = 8 A, T_j = 25 °C - sets baseline conduction loss; rises only to 1.50 V at 175 °C, enabling stable efficiency over temperature
Q_CJ	28 nC @ V_R = 400 V - quantifies stored capacitive charge driving MOSFET gate during turn-off; directly impacts hard-switching EMI and snubber sizing
R_th(j-c)	1.1 °C/W (typ.) - enables compact thermal design; allows 132 W max power dissipation before reaching 175 °C junction limit at 25 °C case
I_FSM	46 A @ t_p = 10 ms, T_C = 25 °C - ensures survival during cold-start inrush and overload events without bond-wire fusing
T_j (max)	175 °C - permits operation in sealed enclosures or high-ambient environments where silicon diodes would derate severely

Pinout & Package

STPSC8065D uses the TO-220AC package: single-ended, insulated tab, vertical mounting, with lead-free matte tin plating and UL94 V0 epoxy. Thermal path is optimized for conduction cooling via case-to-heatsink interface (recommended torque: 0.55 N·m).

Pin/Terminal	Circuit Role	Design Meaning
Anode (Lead 1)	Power input node for forward conduction path	Connected to boost inductor output; carries full load current and high di/dt during PFC switching transitions
Cathode (Lead 2)	Power return node; electrically tied to tab	Directly bonded to metal tab for lowest-inductance, low-resistance connection to system ground or bulk capacitor negative rail
Tab (Case)	Thermal and electrical cathode terminal	Must be electrically isolated from heatsink unless circuit topology requires cathode-referenced mounting; primary heat extraction surface

Key Features

Feature	Design Value
No reverse recovery charge (Q_rr ≈ 0)	Eliminates turn-off switching loss and associated voltage overshoot/ringing-critical for >100 kHz PFC operation
Temperature-stable switching behavior	Capacitance and forward voltage shift <15% from 25 °C to 175 °C-enables consistent timing and loss prediction across operating range
High surge robustness (46 A, 10 ms)	Withstands repeated cold-start surges without degradation-reduces need for oversized input fusing or NTC inrush limiters
ECOPACK®2 compliance	Meets RoHS, halogen-free, and material declaration requirements for industrial and energy-efficient appliance certifications
175 °C continuous operation	Enables smaller heatsinks and higher power density vs. 150 °C silicon diodes-reducing system size and cost in space-constrained designs

Applications

Server PSU PFC Stage

Industrial Motor Drive Input Rectification

Use Scenario: 3 kW CCM boost PFC front-end in 1U server power supply operating at 200 kHz switching frequency with 50 °C ambient.

IC Role / Device Role / Timing Role: High-voltage, high-current freewheeling diode in interleaved boost converter; handles 8 A average current with minimal turn-off loss.

Use Value: Reduces total PFC stage conduction + switching losses by 22% vs. Si FRD, lowering thermal stress on MOSFETs and enabling fanless operation.

Use Scenario: Input rectifier in 7.5 kW variable frequency drive with active front-end and regenerative braking capability.

IC Role / Device Role / Timing Role: Main AC-DC conversion diode in three-phase Vienna rectifier; conducts bidirectional current during regeneration.

Use Value: Maintains <1.5 V forward drop at 150 °C junction, preventing thermal runaway under sustained overload and improving system reliability.

Solar Microinverter DC Link

EV Onboard Charger PFC

Use Scenario: DC link clamping diode in 300 W microinverter handling 600 V DC bus with partial shading-induced transients.

IC Role / Device Role / Timing Role: Transient suppression and voltage clamping element; absorbs inductive kickback from MPPT controller switching.

Use Value: Withstands 650 V repetitive reverse voltage and 200 A peak surge (10 µs), eliminating need for external TVS diodes.

Use Scenario: Boost diode in 6.6 kW single-phase OBC operating in TM-PFC mode with 150 kHz switching and 125 °C ambient under hood.

IC Role / Device Role / Timing Role: Primary conduction path during boost phase; turns off with zero recovery at every cycle.

Use Value: Enables >98.5% PFC efficiency at full load while meeting CISPR-25 Class 5 EMI limits due to absence of recovery ringing.

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
C3D08065A	Same 650 V/8 A rating but TO-220AB package (non-insulated tab); R_th(j-c) = 1.25 °C/W (typ.)	Requires isolated mounting hardware if cathode must be floating; slightly higher thermal resistance limits power density	Select when cost sensitivity outweighs thermal margin needs and isolation is already implemented elsewhere in layout
SS12065A	650 V/12 A rating in TO-247AC; higher I_F(AV), larger footprint, R_th(j-c) = 0.75 °C/W (typ.)	Supports higher continuous current but occupies 2.5× PCB area; suited for 10+ A PFC designs with forced-air cooling	Select when upgrading from 8 A to 12 A output or when lower thermal resistance justifies larger package and cost premium

Compared with C3D08065A and SS12065A, STPSC8065D offers optimal balance of insulation, thermal performance, and footprint for 8 A PFC designs requiring cathode-isolated mounting and natural convection cooling.

Availability

STPSC8065D is available at Aetrix Electronics and suitable for server power supplies, industrial motor drives, solar microinverters, and EV onboard chargers requiring stable component supply and long-term industrial lifecycle support.

Supply support for STPSC8065D 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, designing and manufacturing analog, MEMS, power, and microcontroller solutions for automotive, industrial, and consumer markets.

STPSC8065D belongs to ST's Power SiC portfolio, developed specifically to replace silicon diodes in high-efficiency, high-frequency, high-temperature power conversion systems-especially CCM and TM PFC topologies.

FAQ

Is STPSC8065D pin-compatible with standard silicon rectifiers in TO-220AC packages?

Yes-STPSC8065D uses the industry-standard TO-220AC outline with identical lead spacing, hole pattern, and mounting dimensions as legacy silicon rectifiers. However, its anode/cathode polarity matches conventional diodes (anode = lead 1, cathode = lead 2 + tab), so no PCB redesign is needed for drop-in replacement in existing PFC layouts.

What is the maximum recommended case temperature for continuous operation?

The maximum continuous case temperature is 150 °C, as specified for the 8 A average forward current rating. Exceeding this reduces allowable current per derating curves; operation up to 175 °C junction temperature is permitted only when case temperature remains ≤150 °C and thermal design maintains safe margin against thermal runaway.

Does STPSC8065D require a gate driver or control signal?

No-STPSC8065D is a passive two-terminal power diode with no gate or control input. It conducts automatically when anode voltage exceeds cathode voltage by >1.3 V and blocks reverse voltage up to 650 V. Its zero-recovery behavior eliminates need for timing coordination with upstream MOSFET drivers.

Can STPSC8065D be used in parallel configurations for higher current?

Parallel operation is not recommended without individual current-sharing resistors or matched thermal paths. Unlike silicon diodes, SiC Schottky diodes have positive temperature coefficient for forward voltage, but minor process variations can cause imbalance. For >8 A, ST recommends using a higher-current rated part like STPSC12065D instead of paralleling.

STPSC8065D Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: ECOPACK®2

Package/Case:: TO-220-2

Packaging:: Tube

Product Status:: Active

Technology:: SiC (Silicon Carbide) Schottky

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

Current - Average Rectified (Io):: 8A

Voltage - Forward (Vf) (Max) @ If:: 1.45 V @ 8 A

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

Reverse Recovery Time (trr):: 0 ns

Current - Reverse Leakage @ Vr:: 105 µA @ 650 V

Capacitance @ Vr, F:: 540pF @ 0V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220AC

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

STPSC8065D FAQ

1.How can I place an order for STPSC8065D through Aetrix?

Please submit a Request for Quotation (RFQ) for STPSC8065D 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 STPSC8065D reliable?

The price and inventory of STPSC8065D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPSC8065D is usually 5 days.

3.What payment methods are accepted for STPSC8065D?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPSC8065D transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STPSC8065D?

STPSC8065D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STPSC8065D 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 STPSC8065D?

For technical support, including STPSC8065D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPSC8065D requirements.

6.How does Aetrix verify that STPSC8065D is sourced from the original manufacturer or authorized distributors?

All STPSC8065D 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 STPSC8065D meets industry standards.

7.What is the process for return or replacement of STPSC8065D?

All STPSC8065D units undergo pre-shipment inspection (PSI). If there is an issue with STPSC8065D, 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 STPSC8065D part is unused and in its original packaging.

Return procedure for STPSC8065D:

1.Submit a request within 90 days.

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

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