The Fuji 7MBR50SB120-55 is a 50A, 1200V IGBT power module engineered for high-frequency switching applications in industrial power conversion systems. Part of Fuji Electric's SB-series lineup, this module integrates IGBT switching devices with fast-recovery freewheeling diodes in a compact, industry-standard package. The 1200V blocking voltage and 50A continuous current rating make it a robust solution for applications requiring precise gate-controlled switching with low conduction losses and reliable thermal performance under continuous duty cycles.

The 7MBR50SB120-55 is widely deployed in AC motor drives, servo amplifiers, UPS systems, industrial inverters, and regenerative converter stages. Its electrical characteristics suit variable frequency drive (VFD) platforms, elevator controls, CNC machine tool drives, and welding inverters where consistent switching speed and thermal stability are critical. System designers specify this module for mid-power inverter bridges where the combination of 1200V isolation margin and 50A handling provides the necessary headroom for real-world inductive load transients and short-circuit withstand requirements.

Quick Reference: 7MBR50SB120-55

Key Features of the 7MBR50SB120-55:

• 1200V VCES rating provides robust voltage margin for 690V AC bus and high-transient industrial environments
• 50A continuous collector current supports mid-range inverter bridge configurations without paralleling
• Integrated fast-recovery freewheeling diodes reduce external component count and optimize switching loop inductance
• Fuji SB-series low-saturation IGBT cell structure delivers reduced VCE(sat) for improved conduction loss efficiency
• Industry-standard module footprint and isolation base simplify drop-in replacement on existing heatsink assemblies
• Optimized gate charge and turn-off characteristics support carrier frequencies typical of modern PWM inverter controllers

With a current factory lead time of 99 weeks for new production, the 7MBR50SB120-55 presents a serious sourcing challenge for maintenance teams and procurement departments managing unplanned equipment failures or production line shutdowns. Extended lead times on Fuji IGBT modules are common across the industry, and waiting nearly two years for a replacement is not a viable option when a drive system is down. ATI Accurate Technology maintains independent stock of hard-to-find and long-lead-time power semiconductor modules precisely to bridge this gap for engineers who need parts now, not next year.

ATI Accurate Technology is located in Palmetto, Florida, and stocks IGBT modules, thyristors, diodes, and rectifier assemblies for immediate fulfillment. Orders placed before 5PM EST ship same day. Whether you need a single replacement module or volume pricing for MRO or OEM programs, ATI's team is ready to help. Call 239-734-7566 or email sales@igbts.us to confirm availability and pricing on the 7MBR50SB120-55 today.