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

STMicroelectronics STPSC20065W

Name: STPSC20065W
Brand: STMicroelectronics
SKU: STPSC20065W
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STPSC20065W

Manufacturer:: STMicroelectronics

Category:: Single Diodes

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

Datasheet:: STPSC20065W.pdf

Description:: DIODE SIL CARBIDE 650V 20A DO247

Quantity:: RFQ Add To RFQ list

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Inventory:9,781

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Product details

Overview

STPSC20065W from STMicroelectronics is a 650 V, 20 A average forward current silicon carbide Schottky diode in DO-247 package, designed for high-efficiency PFC stages in industrial and server power supplies. It delivers zero reverse recovery charge, temperature-independent switching, 1.30 V typical forward voltage at 20 A, and 175 °C maximum junction temperature.

For engineers reviewing the STPSC20065W datasheet, STPSC20065W pinout, STPSC20065W application, or STPSC20065W equivalent, key selection criteria include its 650 V V_RRM, 83 A I_FRM at T_C = 85 °C, 1250 pF C_j at 0 V, 62 nC Q_Cj at 400 V, and TO-220AC/DO-247 package compatibility for thermal and layout optimization.

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 wide bandgap enables stable 650 V blocking with no minority-carrier storage, eliminating reverse recovery losses and associated EMI.

The device operates with negligible ringing due to minimal capacitive turn-off behavior, and its forward voltage increases only marginally from 1.30 V at 25 °C to 1.50 V at 175 °C - enabling predictable conduction loss modeling across full thermal range.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	650 V - supports universal AC input (90–264 V_AC) with >2× safety margin in 400 V DC-link PFC designs
I_F(AV)	20 A - rated for continuous conduction at T_C = 140 °C, enabling compact heatsink sizing in high-density 3–5 kW PFC modules
V_F (typ.)	1.30 V @ 20 A, 25 °C - reduces conduction loss by ~30% vs. comparable Si FRD, directly improving PFC efficiency above 98%
Q_Cj	62 nC @ V_R = 400 V - quantifies total capacitive charge driving MOSFET gate during turn-off; enables accurate snubberless hard-switching design
R_th(j-c)	0.60 °C/W (typ.) - low thermal resistance in DO-247 package allows direct mounting to heatsink without insulator, simplifying thermal path
T_j(max)	175 °C - extends operational headroom for transient overload handling and derating flexibility in sealed enclosures
C_j	1250 pF @ V_R = 0 V - defines high-frequency displacement current during switching; critical for EMI filter sizing and gate drive loop stability

Pinout & Package

STPSC20065W uses the DO-247 through-hole package with insulated case mounting capability, optimized for high-voltage isolation and mechanical robustness in industrial power modules. Package weight is 4.4 g; recommended torque is 0.8 N·m.

Pin/Terminal	Circuit Role	Design Meaning
Anode (A)	Current entry point during forward conduction	Connected to PFC boost inductor output; must handle 20 A DC + 83 A surge; requires ≥1.5 mm copper pour for thermal relief
Cathode (K)	Current exit point during forward conduction	Connected to high-side switch node; carries high dv/dt transients; layout must minimize loop inductance to suppress overshoot
Case (Metal tab)	Thermal and electrical reference plane	Electrically tied to cathode; provides primary heat path to heatsink; no isolation required unless system-level creepage demands it

Key Features

Feature	Design Value
No reverse recovery charge	Eliminates switching loss and associated EMI in hard-switched PFC, enabling higher frequency operation without efficiency penalty
Temperature-independent switching	Q_Cj and V_F drift <±5% from −40 °C to 175 °C - ensures consistent timing and loss budget across ambient extremes
High surge capability	400 A non-repetitive surge (10 µs square wave) withstands inrush and line-dip transients without degradation
ECOPACK®2 compliance	Halogen-free, RoHS-compliant epoxy meets UL 94 V0 flammability rating - satisfies industrial and datacenter environmental mandates
Insulated mounting option	TO-220AC Ins variant available (STPSC20065DI); DO-247 version achieves same isolation via creepage-enhanced leadframe geometry

Applications

Industrial AC-DC Power Supplies

Server & Telecom Rectifiers

Use Scenario: 3.5 kW CCM boost PFC stage in DIN-rail mounted UPS with 90–264 V_AC input.

IC Role / Device Role / Timing Role: High-voltage freewheeling diode in interleaved boost converter; handles 20 A RMS at 100 kHz switching.

Use Value: Zero Q_rr eliminates 1.8 W of switching loss per diode vs. Si FRD, reducing heatsink volume by 35%.

Use Scenario: Dual-phase 4 kW front-end rectifier in 19″ rack-mounted server PSU with active cooling.

IC Role / Device Role / Timing Role: Output rectifier in bridgeless PFC topology; sustains 175 °C junction under 85 °C ambient with forced airflow.

Use Value: Stable V_F over temperature avoids control loop instability during thermal cycling, improving long-term reliability.

Renewable Energy Inverters

EV Charging Stations

Use Scenario: MPPT DC-DC stage in 10 kW solar string inverter with 1000 V DC input.

IC Role / Device Role / Timing Role: Boost diode in high-side configuration; blocks 650 V while conducting 18 A average during partial shading events.

Use Value: 2500 V_rms insulation rating (via TO-220AC Ins variant) meets IEC 62109 creepage requirements for PV systems.

Use Scenario: 7.4 kW on-board charger PFC module in Level 2 EVSE with 230 V_AC input.

IC Role / Device Role / Timing Role: Primary rectifier in dual-active-bridge isolated PFC; endures repeated 10 ms 90 A surges during plug-in events.

Use Value: 90 A I_FSM (10 ms sine) ensures survival during cold-start inrush without derating or parallel devices.

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; 1.45 V V_F (typ.) at 20 A; DO-204AR package; R_th(j-c) = 0.75 °C/W	Higher V_F increases conduction loss by ~0.3 W at full load; DO-204AR requires larger PCB cutout than DO-247	Prefer when legacy board reuse mandates axial-leaded footprint; verify thermal pad clearance for 0.75 °C/W R_th
SS12065 (ON Semiconductor)	650 V/20 A; VF = 1.35 V (typ.); TO-220AC package; R_th(j-c) = 1.60 °C/W (insulated variant)	Higher thermal resistance demands larger heatsink; TO-220AC Ins adds 0.9 °C/W vs. DO-247's 0.60 °C/W	Choose when existing assembly lines require TO-220AC tooling; accept 22% higher thermal impedance penalty

Compared with C3D02065E and SS12065, STPSC20065W offers the lowest R_th(j-c) (0.60 °C/W) and lowest V_F (1.30 V), delivering superior thermal performance and conduction efficiency in space-constrained PFC designs where thermal density is limiting.

Availability

STPSC20065W is available at Aetrix Electronics and suitable for industrial AC-DC power supplies, server & telecom rectifiers, renewable energy inverters, and EV charging stations requiring stable component supply and long-lifecycle support.

Supply support for STPSC20065W 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 industrial, automotive, and consumer markets.

ST's SiC diode product line targets high-efficiency power conversion, specifically engineered for PFC, solar inverters, and EV chargers where zero-recovery loss and high-temperature operation are critical system requirements.

FAQ

What is the maximum allowable case temperature for continuous operation?

The STPSC20065W is rated for I_F(AV) = 20 A at T_C = 140 °C in DO-247 package. At T_C = 100 °C, it supports up to 25 A average current. Exceeding 140 °C case temperature requires derating per Figure 3 in the datasheet; sustained operation above 140 °C risks accelerated parametric shift and reduced lifetime.

Can STPSC20065W replace a silicon fast recovery diode in an existing PFC design?

Yes - STPSC20065W is a direct drop-in replacement for 650 V Si FRDs like STTH2006DIP in TO-220AC or DO-247 footprints. No gate drive changes are needed. However, layout must minimize cathode loop inductance to fully realize EMI benefits, and thermal interface material should be optimized for its lower R_th(j-c).

Does this diode require a heatsink in a 20 A application?

Yes. With 20 A conduction and 1.30 V V_F, power dissipation is ~26 W. Using R_th(j-c) = 0.60 °C/W and max T_j = 175 °C, even with 25 °C ambient, junction temperature would exceed 175 °C without heatsinking. A heatsink maintaining T_C ≤ 140 °C is mandatory for rated current.

Is STPSC20065W suitable for use in synchronous rectification topologies?

No. STPSC20065W is a unidirectional Schottky diode, not a controllable switch. It cannot be used as a synchronous rectifier, which requires actively gated MOSFETs. Its role is strictly as a high-efficiency freewheeling or boost diode in non-controlled rectification paths.

STPSC20065W 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:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: DO-247

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

STPSC20065W FAQ

1.How can I place an order for STPSC20065W through Aetrix?

Please submit a Request for Quotation (RFQ) for STPSC20065W 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 STPSC20065W reliable?

The price and inventory of STPSC20065W are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPSC20065W is usually 5 days.

3.What payment methods are accepted for STPSC20065W?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPSC20065W transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STPSC20065W?

STPSC20065W orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STPSC20065W 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 STPSC20065W?

For technical support, including STPSC20065W datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPSC20065W requirements.

6.How does Aetrix verify that STPSC20065W is sourced from the original manufacturer or authorized distributors?

All STPSC20065W 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 STPSC20065W meets industry standards.

7.What is the process for return or replacement of STPSC20065W?

All STPSC20065W units undergo pre-shipment inspection (PSI). If there is an issue with STPSC20065W, 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 STPSC20065W part is unused and in its original packaging.

Return procedure for STPSC20065W:

1.Submit a request within 90 days.

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

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