The 1MBI400NP-120-01 is a Fuji Electric NP-series single-switch IGBT module rated at 400 amperes and 1200 volts, built for demanding high-power conversion environments. Utilizing Fuji's mature N-series IGBT chip technology, this module delivers stable switching characteristics, low saturation voltage (V_CE(sat)), and integrated freewheeling diode performance suited to continuous industrial duty cycles. Its robust isolation and compact power terminal layout make it a reliable choice for engineers designing or maintaining high-current inverter and converter stages where thermal and electrical headroom are critical parameters.

The 1MBI400NP-120-01 sees widespread use across heavy industrial platforms including AC and DC motor drive systems, regenerative servo amplifiers, induction heating equipment, uninterruptible power supplies (UPS), and traction converters. Its 1200V blocking voltage and 400A continuous current rating position it as a capable building block in three-phase inverter bridges and chopper circuits operating from 480V to 690V bus voltages. OEM machine builders in steel, paper, mining, and material handling have integrated this module extensively into installed base equipment still operating in production facilities worldwide.

Quick Reference: 1MBI400NP-120-01

Key Features of the 1MBI400NP-120-01:

• 400A continuous collector current with 1200V C-E breakdown voltage for high-power inverter and converter applications
• Fuji N-series IGBT technology providing low V_CE(sat) for reduced conduction losses at full load
• Integrated high-speed freewheeling diode with soft recovery characteristics to suppress voltage transients during commutation
• High isolation voltage base plate design compatible with standard heatsink mounting configurations
• Optimized gate charge and switching times balancing switching loss against EMI performance in PWM drive applications
• Designed for reliable operation across wide junction temperature ranges typical of continuous industrial duty service

The 1MBI400NP-120-01 has been classified as obsolete by Fuji Electric, with no scheduled new production runs — current factory lead time estimates exceed 99 weeks when production slots are available at all. For maintenance engineers supporting installed drives or OEM equipment built around this module, waiting on factory stock is simply not a viable option. ATI Accurate Technology specializes in exactly this scenario: sourcing and stocking obsolete and long-lead-time power semiconductors so that a single failed module does not become a prolonged production shutdown. Our inventory is verified new OEM product, not refurbished or remarked.

ATI Accurate Technology is headquartered in Palmetto, Florida and stocks the 1MBI400NP-120-01 ready for same-day shipment on orders placed before 5PM EST. Whether you need a single replacement unit or volume quantities for a stocking program, our team is ready to assist. Contact us at 239-734-7566 or sales@igbts.us for pricing, availability confirmation, and volume discount information. We ship to customers across North America and internationally.