MITSUBISHI – CM300DY-24H – IGBT Power Module – 1200V 300A Dual Half-Bridge – Reclaimed Part

Mitsubishi Electric / Powerex — CM300DY-24H IGBT Power Module

What it is

The Mitsubishi Electric / Powerex CM300DY-24H is a high-power 1200 V, 300 A dual IGBT module containing two power IGBTs arranged as a half-bridge. Each switching device incorporates a reverse-connected fast free-wheel diode, providing the current paths required for efficient operation with inductive loads in inverter, motor-drive, UPS, and industrial power-conversion systems.

The dual configuration provides a complete high-current inverter leg in one rugged package, reducing external connections and simplifying busbar, heatsink, and service design. Its electrically isolated baseplate allows the module to be mounted to a common heatsink while maintaining isolation between the semiconductor circuit and cooling surface.

With its 1200 V blocking capability and 300 A current class, the CM300DY-24H is well suited to high-voltage UPS inverter and rectifier stages, variable-frequency drives, industrial motor controls, welding equipment, DC choppers, and other demanding power-conversion applications. It is particularly useful for maintaining legacy equipment where the original Mitsubishi module must be matched for electrical ratings, circuit configuration, gate drive, terminal arrangement, mechanical footprint, and thermal characteristics.

At-a-Glance

• Manufacturer: Mitsubishi Electric / Powerex
• Part Number: CM300DY-24H
• Voltage / Current: 1200 V / 300 A
• Peak Collector Current: Approximately 600 A pulsed
• Topology: Dual IGBT half-bridge
• Semiconductors: 2 IGBTs with antiparallel fast free-wheel diodes
• Gate Rating: ±20 V maximum
• Isolation: 2.5 kV RMS / 1 minute
• Mounting: Screw-mount with isolated baseplate
• Use Cases: UPS systems; industrial drives; inverters; welders; high-power converters
• Condition: Reclaimed Part

Features

• 1200 V power class — Designed for high-voltage industrial inverter and power-conversion applications.
• High-current capability — 300 A continuous-current class with substantial short-duration current capability.
• Dual half-bridge design — Two IGBTs provide a complete inverter leg within a single module.
• Low conduction loss — V_CE(sat) approximately 2.1 V typical at rated current helps reduce semiconductor conduction losses.
• Fast free-wheel diodes — Integrated antiparallel diodes provide efficient commutation with inductive loads.
• Wide switching SOA — Rugged construction for demanding inverter and motor-control environments.
• Isolated baseplate — Simplifies heatsink mounting and electrical grounding strategy.
• Legacy equipment support — Useful for maintaining UPS and industrial systems originally designed around Mitsubishi dual IGBT modules.

Technical Specifications

Compatibility / Representative Uses