The Fuji Electric 2DI150M-120 is a dual diode module rated for 150A continuous forward current and 1200V repetitive peak reverse voltage. Built in Fuji's proven power module platform, this device delivers robust rectification performance in a compact, industry-standard footprint. The module's internal dual-diode configuration makes it well suited for both main rectifier bridges and freewheeling diode positions in IGBT-based inverter stacks, providing low forward voltage drop, reliable thermal performance, and the mechanical consistency required in demanding industrial environments.

The 2DI150M-120 sees widespread use across industrial AC and DC motor drives, regenerative power supplies, UPS and battery charging systems, welding equipment, and crane or hoist drive platforms. Its 1200V blocking voltage provides the necessary margin for 690VAC bus applications, while the 150A current rating supports mid-to-large horsepower drive topologies. Maintenance engineers frequently encounter this module in legacy Fuji FRENIC and older third-party drive assemblies where direct form-fit-function replacement is essential to minimize downtime and avoid costly drive redesigns.

Quick Reference: 2DI150M-120

Key Features of the 2DI150M-120:

• 150A average forward current (IFAV) with high surge current capability for robust rectifier and freewheeling duty
• 1200V repetitive peak reverse voltage (VRRM) providing adequate margin for 690VAC three-phase bus systems
• Dual-diode configuration in a single isolated base module, simplifying layout and reducing component count in bridge assemblies
• Low thermal resistance junction-to-case (Rth j-c) for efficient heat transfer to standard forced-air or liquid-cooled heatsinks
• Isolated copper base plate construction enabling direct heatsink mounting without additional insulation hardware
• Industry-standard module footprint compatible with common Fuji and cross-reference mounting configurations for drop-in replacement

The 2DI150M-120 has been discontinued by Fuji Electric, with factory new-production lead times exceeding 99 weeks — effectively unavailable through standard distribution channels. For facilities running legacy drives or power conversion equipment that depend on this module, sourcing from stocking distributors with verified OEM inventory is the only practical path to avoiding extended production shutdowns. Attempting to substitute with non-equivalent parts introduces risk to both equipment and personnel; an exact replacement from a reliable source is the responsible choice for critical infrastructure maintenance.

ATI Accurate Technology, based in Palmetto, FL, specializes in hard-to-find, obsolete, and long-lead-time power semiconductors including IGBTs, diodes, thyristors, and rectifier modules. The 2DI150M-120 is in stock and available for same-day shipping on orders placed before 5PM EST. Volume pricing is available for MRO stockers and OEM repair depots. Contact our team at 239-734-7566 or sales@igbts.us to confirm availability and pricing today.