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

Nexperia USA Inc. PSC0665KQ

Name: PSC0665KQ
Brand: Nexperia USA Inc.
SKU: PSC0665KQ
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PSC0665KQ

Manufacturer:: Nexperia USA Inc.

Category:: Single Diodes

Package:: TO-220-2

Datasheet:: PSC0665KQ.pdf

Description:: SIC DIODES AND FETS

Quantity:: RFQ Add To RFQ list

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Inventory:1,000

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Product details

Overview

PSC0665KQ from Nexperia is a 650 V, 6 A Silicon Carbide Schottky diode in TO-220-2 R2P package, engineered as a high-efficiency freewheeling and output rectification device in high-frequency power converters. It delivers zero reverse recovery, 14 nC capacitive charge at 400 V, 1.5–1.8 V forward voltage at 6 A/25 °C, and 300 A non-repetitive surge capability - enabling use in photovoltaic inverters and server PSUs operating above 100 kHz.

For engineers reviewing the PSC0665KQ datasheet, PSC0665KQ pinout, PSC0665KQ application, or PSC0665KQ equivalent, key selection criteria include its temperature-independent switching, 2.9 K/W junction-to-case thermal resistance, 650 V DC blocking rating, and compatibility with high-dv/dt (100 V/ns) environments in hard-switched topologies.

Technical Context

This SiC Schottky diode employs a Merged PiN Schottky (MPS) structure to combine low conduction loss with robust surge immunity. Its zero-recovery behavior eliminates reverse recovery current and associated switching losses, while the Real-2-Pin (R2P) TO-220-2 configuration integrates the mounting base electrically with the cathode for low-inductance heatsinking.

The device operates with stable dynamic characteristics across −55 °C to 175 °C junction temperature range: forward voltage drifts predictably with temperature (V_F = 1.95–2.6 V at 6 A/150 °C), and reverse leakage remains ≤1250 µA at 650 V/150 °C - supporting reliable operation in thermally constrained telecom and UPS systems.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	650 V - Sustains full DC bus voltage in 400–600 V AC-DC front-ends without derating.
I_F	6 A continuous - Supports 500 W–1 kW converter output stages with forced-air cooling at T_c ≤ 128 °C.
Q_C	14 nC at VR = 400 V - Reduces turn-off energy loss by >80% vs. silicon FRD in 100–300 kHz SMPS designs.
V_F	1.5–1.8 V at 6 A/25 °C - Minimizes conduction loss in high-duty-cycle rectification paths.
R_th(j-c)	2.9 K/W typical - Enables direct heatsink mounting for thermal management in space-constrained 1U server PSUs.
I_FSM	300 A peak (10 µs square wave) - Withstands inrush and fault currents in battery charging infrastructure.

Pinout & Package

Encapsulated in a TO-220-2 Real-2-Pin (SOT8021) through-hole plastic package with 15.3 mm × 10 mm × 4.4 mm body, 5.08 mm lead pitch, and electrically connected metal mounting base.

Pin/Terminal	Circuit Role	Design Meaning
1 (K)	Cathode	Main current exit terminal; internally bonded to mounting base for low-inductance thermal path and EMI reduction.
2 (A)	Anode	Current entry terminal; isolated from case; enables standard TO-220 heatsink isolation when required.
Mounting base (mb)	Cathode extension	Electrically tied to Pin 1; provides mechanical attachment and primary thermal interface - must be insulated if cathode potential differs from heatsink ground.

Key Features

Feature	Design Value
Zero forward & reverse recovery	Eliminates reverse recovery current (I_RR) and associated switching loss, enabling >300 kHz operation without snubbers.
Temperature-independent Q_C	Capacitive charge remains stable across −55 °C to 175 °C, ensuring consistent turn-off timing in wide-temperature industrial environments.
High I_FSM (300 A)	Withstands short-duration overcurrent events in UPS hold-up and EV charger pre-charge circuits without bond-wire fusing.
Outstanding Q_C × V_F	Figure-of-merit <100 nC·V - superior to competing 650 V SiC diodes, directly reducing total power loss in high-frequency converters.
dv/dt ruggedness (100 V/ns)	Resists false triggering in high-di/dt half-bridge leg configurations, improving reliability in motor drives and solar string inverters.

Applications

Photovoltaic Inverters

Server Power Supplies

Use Scenario: DC-side boost stage and AC-side H-bridge freewheeling in string inverters operating at 50–100 kHz.

IC Role / Device Role / Timing Role: High-voltage output rectifier and anti-parallel freewheeling diode in SiC MOSFET-based synchronous topologies.

Use Value: Zero recovery eliminates shoot-through risk during dead-time, while 650 V rating supports 1000 V DC input systems with margin.

Use Scenario: Secondary-side synchronous rectification in 48 V–12 V intermediate bus converters within 1U rack-mounted servers.

IC Role / Device Role / Timing Role: Low-loss output diode replacing Schottky alternatives in high-density, air-cooled VRMs.

Use Value: 2.9 K/W R_th(j-c) enables compact heatsink integration; 14 nC Q_C reduces switching loss by 35% vs. legacy Si diodes at 200 kHz.

Telecom Rectifiers

Battery Charging Infrastructure

Use Scenario: Output rectification in 48 V telecom rectifier modules with >96% efficiency targets and 60 °C ambient operation.

IC Role / Device Role / Timing Role: Primary output diode in phase-shifted full-bridge topology handling 1.5 kW continuous load.

Use Value: Stable V_F (1.95–2.6 V at 150 °C) ensures predictable conduction loss across full temperature range, simplifying thermal design.

Use Scenario: Onboard charger (OBC) PFC boost diode and DC-DC isolation stage rectifier in 11–22 kW EV chargers.

IC Role / Device Role / Timing Role: High-reliability freewheeling diode in interleaved PFC and LLC resonant converter outputs.

Use Value: 300 A I_FSM withstands repeated inrush surges during battery connection; 100 V/ns dv/dt rating prevents spurious turn-on during fast gate transitions.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
Wolfspeed C4D06120A	Same 650 V/6 A rating but TO-247-2L package; higher Q_C (17 nC); slightly higher V_F (1.7–2.0 V @ 25 °C).	Requires larger PCB footprint and different heatsink interface; better suited for convection-cooled industrial drives than dense telecom modules.	Select when higher surge margin (350 A I_FSM) and industry-standard TO-247 mounting are prioritized over board area.
ROHM SCT3106KL	650 V/6 A in TO-220AC; lower Q_C (12 nC); tighter V_F tolerance (1.45–1.75 V); no integrated mounting base tie.	Lacks cathode-connected heatsink tab; requires insulating washer and adds 0.5–0.8 K/W thermal penalty in high-power density layouts.	Prefer where absolute lowest Q_C is critical and thermal interface can accommodate added insulation resistance.

Compared with C4D06120A and SCT3106KL, PSC0665KQ uniquely combines TO-220-2 R2P's compact footprint, cathode-integrated heatsink, and balanced Q_C×V_F, making it optimal for space- and thermal-constrained 1U server PSUs and photovoltaic microinverters requiring direct-mount reliability.

Availability

PSC0665KQ is available at Aetrix Electronics and suitable for photovoltaic inverters, server power supplies, and telecom rectifiers requiring stable component supply, long-term lifecycle support, and traceable sourcing for production ramp.

Supply support for PSC0665KQ 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

Nexperia is a global semiconductor expert focused on high-performance, high-reliability discrete and logic devices, with leadership in automotive-qualified and industrial-grade components.

PSC0665KQ belongs to Nexperia's high-voltage SiC Schottky diode product line, designed specifically for next-generation power conversion systems demanding zero-recovery performance, high-temperature operation, and high power density in compact form factors.

FAQ

Is PSC0665KQ suitable for use in automotive on-board chargers?

No - PSC0665KQ is not automotive-qualified per Nexperia's legal disclaimers. It lacks AEC-Q101 stress testing and automotive-specific reliability validation. For OBC applications, only parts explicitly marked "Automotive Qualified" in Nexperia's portfolio should be selected, as PSC0665KQ is rated for industrial and telecom use only.

What is the maximum recommended case temperature for continuous 6 A operation?

The datasheet specifies that 6 A continuous forward current is rated at T_c ≤ 128 °C. Exceeding this case temperature requires derating per Figure 3; at T_c = 150 °C, maximum continuous I_F drops to 3.6 A. Thermal design must ensure heatsink interface maintains case temperature below 128 °C under worst-case ambient and airflow conditions.

Does the mounting base require electrical isolation from the heatsink?

Yes - the mounting base is electrically connected to the cathode (Pin 1). If the heatsink is grounded or held at a different potential than the cathode node, an insulating washer and shoulder washer must be used. Failure to isolate may cause short-circuit or ground loop issues in floating-leg topologies like three-phase inverters.

How does PSC0665KQ's dv/dt ruggedness compare to standard silicon diodes?

PSC0665KQ supports 100 V/ns dv/dt, significantly exceeding typical 20–50 V/ns ratings of fast recovery silicon diodes. This enables reliable operation in high-speed SiC MOSFET half-bridges without snubbers, whereas silicon diodes would suffer parasitic turn-on and failure under identical dV/dt stress.

PSC0665KQ Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

Package/Case:: TO-220-2

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: SiC (Silicon Carbide) Schottky

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

Current - Average Rectified (Io):: 6A

Voltage - Forward (Vf) (Max) @ If:: 1.8 V @ 6 A

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

Reverse Recovery Time (trr):: 0 ns

Current - Reverse Leakage @ Vr:: 180 µA @ 650 V

Capacitance @ Vr, F:: 225pF @ 1V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220-2

Operating Temperature - Junction:: -55°C ~ 175°C

PSC0665KQ FAQ

1.How can I place an order for PSC0665KQ through Aetrix?

Please submit a Request for Quotation (RFQ) for PSC0665KQ 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 PSC0665KQ reliable?

The price and inventory of PSC0665KQ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PSC0665KQ is usually 5 days.

3.What payment methods are accepted for PSC0665KQ?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PSC0665KQ transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PSC0665KQ?

PSC0665KQ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PSC0665KQ 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 PSC0665KQ?

For technical support, including PSC0665KQ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PSC0665KQ requirements.

6.How does Aetrix verify that PSC0665KQ is sourced from the original manufacturer or authorized distributors?

All PSC0665KQ 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 PSC0665KQ meets industry standards.

7.What is the process for return or replacement of PSC0665KQ?

All PSC0665KQ units undergo pre-shipment inspection (PSI). If there is an issue with PSC0665KQ, 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 PSC0665KQ part is unused and in its original packaging.

Return procedure for PSC0665KQ:

1.Submit a request within 90 days.

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

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