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

STMicroelectronics STPSC606D

Name: STPSC606D
Brand: STMicroelectronics
SKU: STPSC606D
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STPSC606D

Manufacturer:: STMicroelectronics

Category:: Single Diodes

Package:: TO-220-2

Datasheet:: STPSC606D.pdf

Description:: DIODE SIL CARB 600V 6A TO220AC

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Inventory:17

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Product details

Overview

STPSC606D from STMicroelectronics is a 600 V, 6 A average forward current silicon carbide Schottky diode in TO-220AC package, designed specifically as a PFC boost diode for hard-switching power factor correction stages. It exhibits zero reverse recovery charge, temperature-independent switching behavior, and 6 nC typical capacitive charge at 400 V and 150 °C junction temperature.

For engineers reviewing the STPSC606D datasheet, STPSC606D pinout, STPSC606D application, or STPSC606D equivalent, key selection criteria include its 600 V V_RRM, 2.8 °C/W junction-to-case thermal resistance, negligible reverse recovery, 1.4–2.1 V forward voltage range across temperature, and suitability for high-efficiency AC/DC front-end designs operating up to 175 °C junction temperature.

Technical Context

This SiC Schottky diode replaces conventional silicon fast recovery diodes in continuous conduction mode (CCM) PFC boost converters. Its wide bandgap enables a 600 V blocking rating with Schottky architecture-eliminating minority-carrier storage and associated reverse recovery losses.

The device operates with stable Q_C = 6 nC and C = 30 pF at 400 V, delivering consistent turn-off behavior across -40 to +175 °C. Its 2.8 °C/W R_th(j-c) supports direct heatsink mounting in compact industrial and server power supplies.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	600 V - Enables use in universal-input (85–265 V_AC) PFC stages with sufficient margin against line transients.
I_F(AV)	6 A at T_c = 125 °C - Specifies maximum continuous forward current under real thermal mounting conditions.
R_th(j-c)	2.8 °C/W - Defines thermal path efficiency from junction to case, critical for heatsink sizing in 1U server PSUs.
Q_C	6 nC at V_R = 400 V, dI_F/dt = −200 A/µs, T_j = 150 °C - Quantifies capacitive turn-off energy loss, directly impacting EMI and switching loss in 65–100 kHz PFC.
V_F	1.4–2.1 V (typ–max) at I_F = 6 A - Low forward drop reduces conduction loss versus Si FRDs, especially at elevated temperatures.
T_j(max)	+175 °C - Allows operation in thermally constrained environments without derating, supporting high-power density designs.

Pinout & Package

TO-220AC package with isolated tab (case connected to cathode), single-diode configuration, and screw-mount mechanical interface rated for 0.4–0.6 N·m torque.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to PFC inductor output node; must be routed with low-inductance layout to minimize voltage overshoot during turn-off.
Cathode	Forward current exit / case connection	Internally bonded to metal tab; serves as thermal and electrical return path to heatsink-requires insulating washer if heatsink is grounded.
Case (Tab)	Thermal interface & cathode terminal	Electrically tied to cathode; provides primary heat conduction path-must be mounted to heatsink with thermal compound and proper torque.

Key Features

Feature	Design Value
No reverse recovery charge (Q_rr ≈ 0)	Eliminates switching loss spikes and EMI noise caused by diode tail current in hard-switched PFC, enabling higher frequency operation.
Temperature-stable Q_C and V_F	Enables predictable loss calculation across full operating range (−40 to +175 °C), simplifying thermal design and derating analysis.
Low junction-to-case thermal resistance	2.8 °C/W allows direct mounting on standard extruded heatsinks without thermal vias or complex PCB copper planes.
ECOPACK® compliant TO-220AC	Meets UL94 V0 flammability rating and RoHS/REACH requirements for industrial and computing applications.

Applications

Server Power Supply

Industrial AC/DC Converter

Use Scenario: 1U rack-mount server PSU with 80 PLUS Titanium certification requiring >96% efficiency at 50% load.

IC Role / Device Role / Timing Role: PFC boost diode in continuous conduction mode (CCM) topology operating at 70 kHz.

Use Value: 6 nC Q_C and 1.6 V V_F at 150 °C reduce total PFC loss by ~1.2 W vs. Si FRD, directly improving system efficiency and thermal margin.

Use Scenario: DIN-rail mounted 3 kW industrial AC/DC converter for PLC power modules.

IC Role / Device Role / Timing Role: Primary boost diode handling 6 A average current with ambient up to 70 °C and forced-air cooling.

Use Value: +175 °C T_j(max) and stable R_th(j-c) allow full-rated operation without derating, reducing heatsink size by 35% versus Si alternatives.

Solar Microinverter Front-End

EV Onboard Charger (OBC) PFC Stage

Use Scenario: Single-phase microinverter with MPPT input and 230 V_AC grid output, operating in outdoor enclosures.

IC Role / Device Role / Timing Role: High-reliability PFC diode exposed to wide ambient swings (−25 to +65 °C) and solar-induced thermal cycling.

Use Value: Zero Q_rr eliminates wear-out mechanism from reverse recovery stress, extending lifetime beyond 25 years in field deployment.

Use Scenario: Bidirectional OBC with dual active bridge (DAB) and boost PFC stage for 6.6 kW charging.

IC Role / Device Role / Timing Role: Fast-switching boost diode in interleaved PFC operating at 100 kHz with high dI/dt.

Use Value: Negligible ringing and temperature-independent turn-off enable clean gate drive timing and reduced snubber losses in high-density OBC designs.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
C3D06060A (Wolfspeed)	Same 600 V/6 A rating; 5.5 nC Q_C; D2PAK-7L package with Kelvin cathode.	Requires 4-layer PCB with dedicated Kelvin trace; better for ultra-low-noise PFC but not drop-in compatible.	Select when minimizing EMI in medical-grade PSUs justifies layout redesign and Kelvin routing.
SS16HE3/57T (Vishay)	Si-based 600 V Schottky; 1.7 V V_F at 25 °C but rises to 2.4 V at 150 °C; Q_rr > 20 nC.	Higher conduction and switching loss; limited to <125 °C T_j; unsuitable for high-temp or high-frequency PFC.	Accept only for cost-sensitive, low-power (<300 W), non-temperature-critical applications where efficiency is secondary.

Compared with C3D06060A, STPSC606D offers simpler TO-220AC mounting and lower BOM cost but lacks Kelvin sensing; versus SS16HE3/57T, it delivers superior thermal stability and zero recovery-critical for >1 kW PFC reliability and efficiency targets.

Availability

STPSC606D is available at Aetrix Electronics and suitable for server power supplies, industrial AC/DC converters, solar microinverters, and EV onboard charger PFC stages requiring stable component supply and long-term industrial lifecycle support.

Supply support for STPSC606D 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, analog, MEMS, and microcontroller technologies for industrial, automotive, and consumer markets.

The STPSC series belongs to ST's silicon carbide power diode product line, engineered specifically for high-efficiency, high-reliability PFC and SMPS applications demanding zero-recovery performance and extended temperature operation.

FAQ

Is STPSC606D suitable for synchronous rectification?

No. STPSC606D is a unidirectional Schottky diode optimized for PFC boost operation-not a MOSFET-based synchronous rectifier. It lacks gate control, body diode characteristics, or bidirectional conduction capability required for SR topologies. Its fixed anode-cathode polarity and lack of gate terminal preclude use in LLC or flyback SR circuits.

What is the maximum recommended case temperature for continuous operation?

The maximum continuous case temperature is 125 °C, as specified in Table 2 for I_F(AV) = 6 A. Exceeding this requires current derating per the I_F vs. T_c curve in Figure 3. At T_c = 150 °C, average forward current must be reduced to approximately 4.2 A to maintain safe junction temperature below 175 °C.

Does STPSC606D require a snubber circuit in PFC applications?

A snubber is typically unnecessary due to negligible reverse recovery and low parasitic capacitance (30 pF at 400 V). However, a small RC snubber (e.g., 10 Ω + 100 pF) may be added across anode-cathode if layout-induced ringing exceeds EMI limits-especially with long high-dI/dt traces or inadequate grounding near the diode.

Can STPSC606D replace STTH8R06D in an existing design?

Yes, with validation. STTH8R06D is an 8 A Si fast recovery diode; STPSC606D has lower average current (6 A) but superior thermal and switching performance. Replacement requires verifying that peak/average currents stay within 6 A limits and that heatsink design accommodates the different thermal interface (TO-220AC tab vs. TO-220FP plastic body). Layout changes may improve efficiency but are not mandatory.

STPSC606D Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: TO-220-2

Packaging:: Tube

Product Status:: Obsolete

Technology:: SiC (Silicon Carbide) Schottky

Voltage - DC Reverse (Vr) (Max):: 600 V

Current - Average Rectified (Io):: 6A

Voltage - Forward (Vf) (Max) @ If:: 1.7 V @ 6 A

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

Reverse Recovery Time (trr):: 0 ns

Current - Reverse Leakage @ Vr:: 75 µA @ 600 V

Capacitance @ Vr, F:: 375pF @ 0V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220AC

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

STPSC606D FAQ

1.How can I place an order for STPSC606D through Aetrix?

Please submit a Request for Quotation (RFQ) for STPSC606D 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 STPSC606D reliable?

The price and inventory of STPSC606D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPSC606D is usually 5 days.

3.What payment methods are accepted for STPSC606D?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPSC606D transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STPSC606D?

STPSC606D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STPSC606D 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 STPSC606D?

For technical support, including STPSC606D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPSC606D requirements.

6.How does Aetrix verify that STPSC606D is sourced from the original manufacturer or authorized distributors?

All STPSC606D 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 STPSC606D meets industry standards.

7.What is the process for return or replacement of STPSC606D?

All STPSC606D units undergo pre-shipment inspection (PSI). If there is an issue with STPSC606D, 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 STPSC606D part is unused and in its original packaging.

Return procedure for STPSC606D:

1.Submit a request within 90 days.

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

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