Diodes Incorporated DSC04C065

Overview

DSC04C065 from Diodes Incorporated is a 650 V, 4 A silicon carbide Schottky diode in TO220AC (Type WX) package, designed for high-efficiency rectification with VF ≤ 1.7 V at 4 A and 25°C, IR ≤ 1.1 µA at 650 V and 25°C, and RθJC = 6 °C/W. It serves as a freewheel or blocking diode in industrial motor drives and power inverters operating up to +175°C junction temperature.

For engineers reviewing the DSC04C065 datasheet, DSC04C065 pinout, DSC04C065 application, or DSC04C065 equivalent, key selection criteria include its low conduction loss, stable high-temperature leakage, fast reverse recovery, surge current capability (IFSM = 28 A), and thermal resistance performance in TO220AC mounting configurations.

Technical Context

This SiC Schottky diode eliminates minority-carrier storage, enabling zero reverse recovery charge (Qrr ≈ 0) and near-zero switching loss. Its positive temperature coefficient on VF ensures inherent current sharing in parallel operation.

It operates across –55°C to +175°C with thermal resistance RθJC = 6 °C/W and RθJL = 5 °C/W, supporting high-power density designs where junction-to-case heat transfer is critical. Capacitance is voltage-dependent (CT = 150 pF @ 0.1 V, 30 pF @ 40 V), enabling predictable snubber design in hard-switched topologies.

Key Specifications

Pinout & Package

Package: TO220AC (Type WX), 3-terminal through-hole package with isolated tab (cathode-connected metal tab), molded green plastic housing (UL 94V-0), matte tin-plated copper leadframe.

Key Features

Applications

Equivalent & Alternatives

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

Compared with C4D04065A and NSP40065VD6, the DSC04C065 offers balanced VF (1.7 V), proven high-temperature IR stability (1.1 µA @ 25°C), and industry-standard TO220AC mechanical compatibility-making it optimal for cost-sensitive industrial PFC and motor drive designs requiring validated thermal performance.

Availability

DSC04C065 is available at Aetrix Electronics and suitable for power factor correction, industrial motor drives, and uninterruptible power supplies requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for DSC04C065 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.

The DSC series targets high-reliability SiC power rectification, specifically engineered for industrial, computing, and renewable energy systems demanding high-temperature operation, low leakage, and robust surge immunity.

FAQ

Is the DSC04C065 pin-compatible with standard TO220AC silicon diodes?

Yes, the DSC04C065 uses the industry-standard TO220AC (Type WX) outline with identical mechanical dimensions, lead spacing, and mounting hole location. The tab is cathode-connected, matching conventional TO220AC rectifier orientation. No PCB redesign is needed for drop-in replacement of Si diodes in existing layouts.

What is the maximum allowable case temperature for continuous 4 A operation?

Per the derating curve in DS44820 Rev. 5–2, the DSC04C065 supports 4 A average forward current only up to TC = 100°C. Above that, current must be linearly reduced to 0 A at TC = 175°C. Sustained operation at 4 A requires thermal design ensuring TC ≤ 100°C, typically using a 35 mm × 35 mm × 1.8 mm copper heatsink.

Does this diode require a gate driver or control signal?

No. The DSC04C065 is an uncontrolled two-terminal power diode with no gate or control terminal. It conducts forward current when anode voltage exceeds cathode voltage by ≥ VF, and blocks reverse voltage up to 650 V. It functions autonomously without biasing, timing, or driving circuitry.

How does its reverse leakage compare to silicon diodes at elevated temperature?

At 175°C and 650 V, DSC04C065 IR = 170 µA - still 3–5× lower than typical 600 V Si fast recovery diodes (>500 µA). Its SiC material enables orders-of-magnitude better high-temperature leakage stability, critical for UPS and motor drive reliability in hot environments.