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

Nexperia USA Inc. PSC1065KQ

Name: PSC1065KQ
Brand: Nexperia USA Inc.
SKU: PSC1065KQ
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PSC1065KQ

Manufacturer:: Nexperia USA Inc.

Category:: Single Diodes

Package:: TO-220-2

Datasheet:: PSC1065KQ.pdf

Description:: PSC1065K/SOT8021/TO220-2L

Quantity:: RFQ Add To RFQ list

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Product details

Overview

PSC1065KQ from Nexperia is a 650 V, 10 A silicon carbide Schottky diode in a TO-220-2 (SOT8021) Real-2-Pin through-hole package, engineered for zero-recovery switching in high-frequency power converters. It delivers temperature-independent capacitive turn-off, 22 nC total capacitive charge at 400 V, and a robust 42 A non-repetitive peak forward current (IFSM) at 150 °C case temperature-enabling high-efficiency AC-DC and photovoltaic inverter designs.

For engineers reviewing the PSC1065KQ datasheet, PSC1065KQ pinout, PSC1065KQ application, or PSC1065KQ equivalent, key selection criteria include its 1.95–2.6 V forward voltage at 10 A/150 °C, 650 V DC blocking capability, Rth(j-c) of 1.7–2.3 K/W, and compatibility with high-dv/dt (100 V/ns) hard-switching topologies.

Technical Context

This SiC Schottky diode uses a Merged PiN Schottky (MPS) structure to combine low conduction loss with enhanced surge robustness. Its zero reverse recovery and temperature-stable switching eliminate tail current and reduce EMI generation during turn-off.

The device operates up to 175 °C junction temperature and maintains stable capacitance (36 pF at 400 V) and leakage (<120 µA at 650 V/150 °C), enabling reliable performance in thermally constrained server PSU and UPS systems where thermal cycling and voltage transients are severe.

Key Specifications

Parameter	Value and Actual Design Meaning
V_R	650 V DC blocking voltage - supports primary-side rectification in 400 V AC-input SMPS and 800 V DC-link PV inverters.
I_F	10 A continuous forward current at T_c ≤ 126 °C - enables compact heatsink design in 1–3 kW power supplies.
Q_C	22 nC total capacitive charge at VR = 400 V - directly reduces turn-off switching loss in hard-switched LLC and phase-shifted full-bridge converters.
V_F	1.95–2.6 V at I_F = 10 A / T_j = 150 °C - ensures low conduction loss across operating temperature range without thermal runaway.
I_FSM	42 A non-repetitive peak forward current (tp = 10 ms, T_c = 150 °C) - withstands inrush and overload surges in battery charging infrastructure.
R_th(j-c)	1.7–2.3 K/W thermal resistance - allows direct mounting to heatsink for efficient junction-to-case heat transfer in TO-220-2 footprint.
dV/dt ruggedness	100 V/ns - sustains fast voltage transients without spurious turn-on in high-speed gate driver circuits.

Pinout & Package

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

Pin/Terminal	Circuit Role	Design Meaning
1	K (cathode)	Main cathode terminal; electrically connected to mounting base for low-inductance heatsink return path.
2	A (anode)	Anode input; isolated from mounting base to enable flexible layout in common-cathode or common-anode configurations.
Mounting base (mb)	K (cathode)	Integral metal tab tied to Pin 1; provides mechanical attachment and thermal interface while serving as low-impedance cathode return.

Key Features

Feature	Design Value
Zero forward/reverse recovery	Eliminates reverse recovery charge (Q_rr = 0), removing snubber requirements and reducing turn-off losses in >100 kHz converters.
Temperature-independent switching	Capacitive turn-off behavior remains stable from −55 °C to 175 °C - avoids timing drift in wide-temperature industrial UPS systems.
High I_FSM robustness	42 A surge rating at 150 °C case temperature - supports unregulated battery charging cycles without derating.
Low Q_C × V_F figure-of-merit	22 nC × ~2.3 V ≈ 50.6 nJ - benchmark efficiency metric for SiC diodes in high-power-density telecom PSUs.
Reduced EMI generation	Smooth, soft reverse recovery waveform minimizes high-frequency spectral content - simplifies EMI filter design in Class B-conforming server supplies.

Applications

Switch Mode Power Supply (SMPS)

Photovoltaic Inverters

Use Scenario: High-frequency secondary-side synchronous rectification in 1.5 kW server PSUs with 96%+ efficiency targets.

IC Role / Device Role / Timing Role: Freewheeling diode in active-clamp forward topology, replacing Si diodes to eliminate Q_rr-related losses.

Use Value: Enables 200 kHz operation with <1.5 W conduction loss at full load, reducing heatsink volume by 35% versus 600 V Si alternatives.

Use Scenario: DC-link freewheeling path in string-level PV inverters operating at 1000 V DC bus with rapid MPPT transients.

IC Role / Device Role / Timing Role: Anti-parallel diode for SiC MOSFET half-bridge legs, handling bidirectional reactive current during grid synchronization.

Use Value: Withstands 100 V/ns dv/dt during zero-crossing commutation and maintains <120 µA leakage at 650 V/150 °C ambient.

Battery Charging Infrastructure

Uninterruptible Power Supply (UPS)

Use Scenario: Output rectification in 3 kW EV DC fast-charging modules with 400–800 V output range and 10–30 A constant-current phase.

IC Role / Device Role / Timing Role: Primary output diode in dual-phase interleaved LLC resonant converter, conducting continuous 10 A with minimal thermal rise.

Use Value: Delivers 1.95 V V_F at 150 °C, limiting conduction loss to 19.5 W and enabling forced-air cooling instead of liquid cooling.

Use Scenario: Line-frequency rectifier and hold-up capacitor charging path in online double-conversion UPS with 10 ms switchover time.

IC Role / Device Role / Timing Role: Input bridge diode in high-voltage AC-DC front-end, handling 10 A RMS with 42 A surge tolerance during generator start-up events.

Use Value: Sustains 440 A peak surge (tp = 10 µs) without degradation, eliminating need for parallel diode strings in 5 kVA units.

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 C4D10065A	Same 650 V/10 A rating but TO-247-2L package; higher R_th(j-c) (1.9 K/W typ); no mounting base connection to cathode.	Requires insulated mounting hardware; less suitable for low-inductance heatsink integration in space-constrained telecom PSUs.	Prefer when legacy TO-247 footprint compatibility is required over thermal interface simplicity.
ROHM SCT10H12A	1200 V rating, 10 A; higher V_F (2.1–2.8 V @ 150 °C); TO-220AC package with isolated tab.	Over-specified for 650 V systems; introduces unnecessary conduction loss and cost in 400 V AC-input applications.	Select only if future-proofing for 1000 V DC-link expansion is mandatory and thermal margin permits higher V_F.

Compared with C4D10065A and SCT10H12A, PSC1065KQ offers superior thermal interface via cathode-connected mounting base and optimal V_F/Q_C balance for 650 V-class converters-making it the most cost-effective and thermally efficient choice for high-volume 1–3 kW industrial power supplies.

Availability

PSC1065KQ is available at Aetrix Electronics and suitable for Switch Mode Power Supplies, Photovoltaic Inverters, and Uninterruptible Power Supplies requiring stable component supply, long-term lifecycle support, and traceable sourcing for production ramp.

Supply support for PSC1065KQ 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, energy-efficient components for power management, logic, and analog applications-with manufacturing rooted in process technology leadership and automotive-grade quality systems.

PSC1065KQ belongs to Nexperia's high-voltage SiC Schottky diode product line, designed specifically for ultra-high-efficiency, high-frequency power conversion in data center, renewable energy, and industrial infrastructure systems.

FAQ

What is the maximum junction temperature rating for PSC1065KQ?

The absolute maximum junction temperature (T_j) is 175 °C, verified per IEC 60134 Absolute Maximum Ratings. Operation at this limit requires strict thermal design-case temperature must be maintained ≤126 °C to sustain 10 A continuous forward current, and transient thermal impedance curves (Fig. 1) confirm safe operation under pulsed conditions up to 10 ms.

Does PSC1065KQ require a heatsink, and what is the recommended mounting method?

Yes-PSC1065KQ requires a heatsink due to its 65 W total power dissipation limit at T_c = 25 °C. The mounting base (mb) is electrically connected to cathode (Pin 1), so thermal interface material must be electrically insulating. Recommended mounting uses torque-controlled screws (0.5–0.7 N·m) and thermal grease or phase-change pad to achieve R_th(j-c) ≤ 2.3 K/W as specified.

How does PSC1065KQ perform under high dv/dt stress, and is snubber circuitry needed?

PSC1065KQ is rated for 100 V/ns dv/dt ruggedness (0 ≤ V_R ≤ 480 V), confirmed by Nexperia's test methodology in Section 8. Its zero-recovery behavior eliminates reverse recovery current spikes, making external RC snubbers unnecessary in properly laid-out PCBs with controlled parasitic inductance-reducing BOM count and board area in high-density converters.

Can PSC1065KQ replace silicon diodes in existing 650 V designs without layout changes?

Yes-PSC1065KQ uses the industry-standard TO-220-2 (SOT8021) footprint with 5.08 mm lead pitch and identical mechanical dimensions (15.3 × 10 × 4.4 mm), enabling drop-in replacement. However, layout optimization is advised: minimize anode loop inductance and ensure cathode mounting base has low-impedance thermal/ground path to fully exploit its zero-Q_rr advantage.

PSC1065KQ Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

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):: 10A

Voltage - Forward (Vf) (Max) @ If:: 1.8 V @ 10 A

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

Reverse Recovery Time (trr):: 0 ns

Current - Reverse Leakage @ Vr:: 60 µA @ 650 V

Capacitance @ Vr, F:: 340pF @ 1V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220-2

Operating Temperature - Junction:: 175°C

PSC1065KQ FAQ

1.How can I place an order for PSC1065KQ through Aetrix?

Please submit a Request for Quotation (RFQ) for PSC1065KQ 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 PSC1065KQ reliable?

The price and inventory of PSC1065KQ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PSC1065KQ is usually 5 days.

3.What payment methods are accepted for PSC1065KQ?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PSC1065KQ transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PSC1065KQ?

PSC1065KQ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PSC1065KQ 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 PSC1065KQ?

For technical support, including PSC1065KQ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PSC1065KQ requirements.

6.How does Aetrix verify that PSC1065KQ is sourced from the original manufacturer or authorized distributors?

All PSC1065KQ 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 PSC1065KQ meets industry standards.

7.What is the process for return or replacement of PSC1065KQ?

All PSC1065KQ units undergo pre-shipment inspection (PSI). If there is an issue with PSC1065KQ, 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 PSC1065KQ part is unused and in its original packaging.

Return procedure for PSC1065KQ:

1.Submit a request within 90 days.

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

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