CM150RX1-24T Mitsubishi 1200V 150A IGBT Module

Content last revised on June 28, 2026

CM150RX1-24T Mitsubishi 1200V 150A IGBT Module for High-Reliability Power Conversion

For 690V-class industrial drives that demand thermal headroom and switching efficiency, the CM150RX1-24T from Mitsubishi Electric delivers a robust 1200V, 150A platform built on advanced trench-gate IGBT technology. What separates this device from earlier generations? A low-loss chip set paired with optimized internal layout that trims both conduction and switching losses, easing the thermal burden on your heatsink. Key benefits at a glance: reduced power dissipation and stable operation under demanding load cycles. For mid-power three-phase inverters prioritizing efficiency and thermal margin, this 1200V module is a strong fit.

Application Scenarios & Value

Translating Switching Efficiency into Real-World Power Density

Engineers building variable-frequency drives often wrestle with the same constraint: how to push more current through a fixed enclosure without exceeding junction temperature limits. The CM150RX1-24T addresses this directly. Its low VCE(sat) and reduced turn-off energy let designers raise carrier frequency in a variable frequency drive while keeping losses in check.

Consider a 75 kW pump or fan drive operating from a 480V line. During motor start, inrush current can spike well above nominal. The module's 150A collector rating and rugged short-circuit handling give the design the margin needed to ride through these transients without nuisance trips. This makes it well suited to industrial automation, UPS systems, and PFC stages where reliability under repetitive stress is non-negotiable.

This device is commonly applied across solar inverters, servo drives, and welding power supplies. For higher current density at the same voltage class, the related CM150RX-24T offers a closely matched alternative, while designs needing larger current capability can evaluate the CM300DY-24H. Teams seeking a dual-pack configuration at this rating may also review the CM150DY-24H.

Key Parameter Overview

Decoding the Specs for Enhanced Thermal Reliability

Download the CM150RX1-24T datasheet for detailed specifications and performance curves: CM150RX1-24T datasheet.

Two parameters deserve a closer read. The 1200V VCES rating provides a comfortable safety factor over 600V–690V DC bus voltages, much like specifying a bridge rated well above its expected peak traffic load. The peak current capability of 300A acts as a shock absorber, allowing the device to handle brief overload events that would stress a thinly rated part. Understanding these margins is central to selecting the right heatsink and avoiding thermal derating in the field. For a deeper treatment of this topic, see our guide on why thermal resistance matters for IGBT performance.

Technical Deep Dive

How Trench-Gate Design Lowers Conduction and Switching Penalties

The trench-gate cell structure used in this module narrows the trade-off between on-state voltage and switching loss. By increasing channel density, the design lowers VCE(sat) without forcing a proportional rise in turn-off tail current. The practical outcome is cooler operation at a given output power.

Think of switching loss like friction in a moving mechanism. Every transition between on and off generates heat. A faster, cleaner switch reduces that friction, so less energy is wasted as the device toggles thousands of times per second. This becomes decisive in high-frequency designs, where accumulated switching loss can dominate the thermal budget.

The co-packaged free-wheeling diode is matched to the IGBT's switching profile, controlling reverse recovery and limiting voltage overshoot. This pairing supports cleaner EMC behavior and aligns with standards such as IEC 61800-3 for adjustable-speed drives. For background on device fundamentals, our in-depth analysis of IGBT modules offers useful context.

What is the primary benefit of the trench-gate structure? Lower conduction losses without sacrificing switching speed. How does peak current rating help in motor drives? It absorbs start-up inrush without nuisance shutdowns.

Frequently Asked Questions

Does the 1200V rating suit a 690V industrial line? Yes. The 1200V VCES provides ample margin above a rectified 690V bus, leaving headroom for transients and switching overshoot.

How does the 300A peak current rating affect overload design? The 300A ICM lets the module ride through brief inrush and fault currents, simplifying protection coordination and reducing false trips during motor start.

What thermal design considerations apply to the CM150RX1-24T? Low conduction and switching losses reduce dissipated heat, allowing a smaller or lower-cost heatsink for a target ambient temperature and switching frequency.

Is an integrated free-wheeling diode included? Yes. Each IGBT is co-packaged with a matched FWD optimized for controlled reverse recovery and reduced voltage spikes.

From a field engineer's standpoint, the CM150RX1-24T earns its place where dependable thermal behavior and efficient switching must coexist within a tight enclosure. Verify current and thermal headroom against your duty cycle, and this 1200V, 150A module becomes a practical workhorse for mid-power conversion.