The Mitsubishi CM300DY-12NFB is a 300A, 600V dual IGBT module built in a compact, industry-standard package for high-efficiency power switching. Utilizing Mitsubishi's proven IGBT technology, this module delivers low V_CE(sat) characteristics that reduce conduction losses across the full operating current range. Integrated freewheeling diodes provide a complete half-bridge building block, simplifying inverter stage design and reducing component count. The robust isolated baseplate construction enables reliable thermal management when mounted to a properly sized heatsink, making it a dependable choice for demanding industrial power conversion platforms.

The CM300DY-12NFB sees widespread use in AC variable-frequency drives (VFDs), servo amplifiers, industrial UPS and power conditioning systems, welding inverters, and medium-power traction converters. Its 600V blocking voltage and 300A continuous current rating address the requirements of 380–480VAC three-phase systems where a pair of these modules forms a complete inverter leg. Equipment OEMs in the elevator, HVAC, machine tool, and renewable energy sectors have long relied on this module generation, making availability of replacement units critical for field maintenance and board-level repair operations.

Quick Reference: CM300DY-12NFB

Key Features of the CM300DY-12NFB:

• 600V collector-emitter blocking voltage (V_CES) with 300A rated collector current — suitable for 480VAC bus applications with standard derating margins
• Dual (2-in-1) half-bridge configuration with integrated freewheeling diodes, enabling direct inverter leg implementation without external rectifier devices
• Low V_CE(sat) optimized for reduced conduction losses at high duty cycles in continuous PWM operation
• Electrically isolated copper baseplate rated for direct heatsink mounting, supporting thermal resistance values compatible with forced-air and liquid-cooled assemblies
• Gate drive compatible with standard 15V / −8V bipolar drive signals, easing integration with common IGBT driver ICs and gate resistor networks
• Industry-standard module footprint and terminal layout ensuring mechanical and electrical interchangeability within the CM300DY series platform

With a factory new-production lead time of 36 weeks, securing the CM300DY-12NFB through standard distribution channels presents a significant challenge for maintenance teams facing unplanned downtime or procurement teams managing MRO stock. Mitsubishi's legacy IGBT module generations are increasingly constrained at the distribution level, and delays of this length are operationally unacceptable in most industrial environments. ATI Accurate Technology maintains stock of hard-to-find and long-lead-time IGBT modules precisely for these situations, providing a reliable source when OEM and broadline channels cannot fulfill urgent requirements.

ATI Accurate Technology is an independent power semiconductor distributor located in Palmetto, Florida, stocking IGBTs, thyristors, diodes, and rectifier modules from leading manufacturers. Orders placed before 5PM EST ship same-day. For pricing, volume discounts, or technical questions on the CM300DY-12NFB, contact our team directly at 239-734-7566 or sales@igbts.us. Volume pricing is available for MRO procurement and OEM production builds.