The Mitsubishi PM300DSA120 is a 300A, 1200V Intelligent Power Module designed for demanding industrial power conversion applications. As a fully integrated IPM, it combines high-current IGBT switching elements with onboard gate drive circuitry, short-circuit protection, over-temperature sensing, and under-voltage lockout in a single hermetically sealed package. This level of integration reduces external component count, simplifies thermal management, and improves system reliability — key advantages in high-cycle industrial environments where uptime and board real estate are both at a premium.

The PM300DSA120 sees widespread use in industrial AC variable-frequency drives (VFDs), high-horsepower servo amplifiers, UPS systems, induction heating equipment, and three-phase PWM inverters. Its robust 1200V blocking voltage and 300A current rating make it appropriate for medium-voltage motor control applications in manufacturing, material handling, HVAC, and process automation. OEMs and repair facilities working on legacy Mitsubishi drive platforms and third-party inverter designs frequently rely on this module as a direct drop-in replacement to restore equipment to full operational specification.

Quick Reference: PM300DSA120

Key Features of the PM300DSA120:

• 300A continuous collector current with 1200V CE voltage rating for medium-voltage inverter applications
• Integrated gate drive circuits eliminate the need for external isolated gate drivers, reducing BOM complexity
• Built-in protection functions: short-circuit shutdown, over-temperature (OT) trip, and under-voltage lockout (UVLO) on all channels
• Fault output signal (FO) pin provides real-time fault feedback to the host controller for system-level protection coordination
• Optimized IGBT die technology for low switching losses and reduced thermal stress at high PWM frequencies
• Isolated baseplate construction rated for direct mounting to heatsink, supporting straightforward thermal interface design

The PM300DSA120 has been discontinued by Mitsubishi with no scheduled production restart, placing it firmly in the obsolete category. Engineers maintaining installed equipment or completing legacy drive repairs cannot rely on franchised distribution channels that have long since exhausted their allocations. Locating genuine new OEM stock requires working with a distributor experienced in sourcing discontinued power semiconductors. Counterfeit and remarked modules are a known risk in this market segment — particularly for high-value obsolete IPMs — making supplier vetting and traceability documentation essential before committing to a purchase.

ATI Accurate Technology, based in Palmetto, Florida, specializes in hard-to-find, long-lead-time, and obsolete power semiconductors including IGBTs, thyristors, diodes, and rectifier modules. We maintain verified new OEM stock of the PM300DSA120 and offer same-day shipping on orders placed before 5PM EST. Volume pricing is available for MRO stocking programs and OEM production builds. Contact our team directly at 239-734-7566 or sales@igbts.us to confirm availability and request a quote.