Diodes Incorporated DSC05120FP

Overview

DSC05120FP from Diodes Incorporated is a 1200 V, 5 A silicon carbide Schottky diode in ITO220AC (Type WX-NC) package, optimized for high-efficiency rectification with VF ≤1.7 V at 5 A and 25°C, IR ≤41.5 µA at 1200 V and 25°C, and RθJC = 5 °C/W - deployed in industrial motor drivers and UPS systems requiring stable high-temperature reverse leakage performance.

For engineers reviewing the DSC05120FP datasheet, DSC05120FP pinout, DSC05120FP application, or DSC05120FP equivalent, key selection criteria include its 1200 V blocking capability, low-conduction-loss SiC Schottky architecture, fast zero-recovery behavior, thermal resistance to case, and suitability for PFC stages in high-power SMPS designs.

Technical Context

This SiC Schottky diode replaces conventional silicon fast recovery diodes and PiN rectifiers in high-voltage, high-frequency switching applications. Its zero reverse recovery charge (Qc = 18 nC) eliminates switching losses associated with minority-carrier storage, while its positive temperature coefficient on VF ensures inherent current sharing in parallel configurations.

The device operates across –55°C to +175°C junction temperature range and maintains <400 µA leakage at 1200 V and 175°C. Its ITO220AC package provides direct copper heatsink mounting with low thermal resistance (RθJC = 5 °C/W), enabling compact thermal design in space-constrained inverters and motor drives.

Key Specifications

Pinout & Package

Package: ITO220AC (Type WX-NC), 3-terminal through-hole package with isolated tab (cathode-connected tab), matte tin-plated copper leadframe, UL 94V-0 molded plastic body, weight ≈1.497 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with C3D05120E and SS120120, DSC05120FP delivers lowest VF among ITO220AC-packaged 1200 V SiC diodes and integrates RoHS 3 + halogen-free compliance without trade-offs in surge rating or thermal resistance - making it optimal for cost-constrained, thermally dense industrial power supplies.

Availability

DSC05120FP is available at Aetrix Electronics and suitable for power factor correction, industrial motor drivers, and uninterruptible power supplies requiring stable component supply under extended temperature and high-voltage stress conditions.

Supply support for DSC05120FP 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 DSC05120FP belongs to Diodes' high-voltage SiC Schottky diode product line, engineered specifically for high-efficiency, high-reliability industrial power conversion where thermal stability, low leakage, and zero-recovery performance are mandatory.

FAQ

Is DSC05120FP qualified for automotive applications?

No - DSC05120FP is not AEC-Q101 qualified and is not recommended for automotive use. Diodes offers separate AEC-Q101-qualified SiC diodes (e.g., DSC05120Q) with PPAP documentation, IATF 16949 manufacturing, and extended reliability testing. This part is rated for industrial temperature range (–55°C to +175°C) but lacks automotive-specific qualification.

What is the maximum allowable case temperature for continuous 5 A operation?

Per Figure 1 in DS43883 Rev. 6–3, the DSC05120FP supports 5 A average forward current only up to TC = 25°C. At TC = 100°C, the derated IO is approximately 3.8 A; at TC = 125°C, it drops to ~3.2 A. For sustained 5 A operation, active heatsinking maintaining TC ≤25°C is required.

Does the ITO220AC package provide electrical isolation between the tab and leads?

No - the cathode tab is electrically connected to Lead 2 (cathode terminal). The package does not provide internal isolation; users must ensure the heatsink or mounting surface is either at cathode potential or properly insulated. Unlike TO-220AC variants with isolated tabs, this ITO220AC (Type WX-NC) has a conductive tab tied directly to the cathode.

Why is DSC05120FP marked "NOT RECOMMENDED FOR NEW DESIGNS"?

Diodes has issued a Product Change Notification indicating DSC05120FP is in sunset status due to next-generation SiC diode roadmap alignment. It remains fully available and supported for existing production, but new designs should evaluate successors such as DSC05120G (enhanced VF uniformity) or contact Diodes for qualified drop-in alternatives with extended longevity assurance.