Microchip Technology MSC2X30SDA170J

Overview

MSC2X30SDA170J from Microsemi is a dual silicon carbide Schottky barrier diode configured in anti-parallel topology, rated for 1700 V DC reverse voltage and 30 A DC forward current per diode at TC = 100 °C, with 0.45 °C/W typical junction-to-case thermal resistance, used in high-frequency PFC stages of industrial switch-mode power supplies.

For engineers reviewing the MSC2X30SDA170J datasheet, MSC2X30SDA170J pinout, MSC2X30SDA170J application, or MSC2X30SDA170J equivalent, key selection factors include its isolated SOT-227 package enabling direct heatsink mounting, absence of reverse recovery charge, and avalanche-energy rating for robust snubber/clamp operation in motor controller inverters.

Technical Context

The MSC2X30SDA170J integrates two independent SiC Schottky diodes in a single SOT-227 (ISOPLUS™ SOT-227) package with electrically isolated mounting base, supporting anti-parallel connection for IGBT or MOSFET freewheeling paths. Its zero reverse recovery eliminates switching losses and EMI generation during turn-off.

Each diode exhibits 1.5 V typical forward voltage at 30 A and 25 °C, 2.3 V maximum at 175 °C, and 4 μA maximum reverse leakage at 1700 V and 25 °C - enabling stable operation in high-temperature converter stages without thermal runaway.

Key Specifications

Pinout & Package

SOT-227 (ISOPLUS™ SOT-227) package with isolated metal baseplate, 4-terminal configuration: two anodes (A1, A2), two cathodes (K1, K2), and electrically isolated mounting surface. Dimensions: 40.0 × 25.4 × 9.5 mm (1.575 × 1.000 × 0.375 in).

Key Features

Applications

Equivalent & Alternatives

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

Compared with C3D03065E and STPSC30H17DE, the MSC2X30SDA170J uniquely combines dual anti-parallel topology, 2500 V isolation, and 0.45 °C/W RθJC in one package - eliminating external isolation components and reducing thermal interface complexity in high-reliability industrial inverters.

Availability

MSC2X30SDA170J is available at Aetrix Electronics and suitable for power factor correction, motor inverter anti-parallel protection, and snubber/clamp circuits requiring stable component supply across extended production lifecycles.

Supply support for MSC2X30SDA170J 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

Microsemi (now part of Microchip Technology) designs high-reliability analog and mixed-signal ICs, FPGAs, and discrete power devices for aerospace, defense, industrial, and communications markets.

The MSC2X30SDA170J belongs to Microsemi's silicon carbide Schottky diode product line, engineered specifically for high-efficiency, high-temperature, high-voltage power conversion where reverse recovery loss and thermal management are critical.

FAQ

What is the pin configuration of the MSC2X30SDA170J?

The MSC2X30SDA170J has four terminals in a SOT-227 package: A1 and K1 form the first SiC Schottky diode; A2 and K2 form the second. The metal baseplate is electrically isolated and serves as a thermal interface - not an electrical terminal. Pin assignments match Figure 2 (anti-parallel layout) in the official datasheet.

Does the MSC2X30SDA170J support anti-parallel connection by default?

Yes, the MSC2X30SDA170J is internally wired for anti-parallel operation, as confirmed in Figure 2 of the datasheet. Its A1–K1 and A2–K2 diodes are oriented to conduct in opposite directions, making it ready for IGBT or MOSFET commutation without external reconfiguration.

What is the maximum junction temperature rating for the MSC2X30SDA170J?

The MSC2X30SDA170J has an operating junction temperature range of –55 °C to +175 °C, per Table 2 in the datasheet. This allows reliable operation in sealed industrial enclosures with ambient temperatures up to 85 °C when paired with appropriate heatsinking.

How does the isolation rating of the MSC2X30SDA170J impact PCB layout?

The 2500 V RMS isolation between terminals and baseplate allows direct mounting to a grounded heatsink without insulating hardware. This simplifies thermal design and eliminates dielectric layer reliability concerns - a key advantage over non-isolated TO-247 alternatives like STPSC30H17DE when used in high-voltage chassis-grounded systems.

Can the MSC2X30SDA170J replace the MSC2X31SDA170J in parallel configurations?

No - the MSC2X30SDA170J is optimized for anti-parallel use (Figure 2), while the MSC2X31SDA170J is configured for parallel operation (Figure 1). Their internal terminal polarity differs; substituting one for the other without verifying schematic connectivity will cause short-circuit failure.