Fuji Electric 2MBI300N-060

Technical Dossier

Product Details And Specifications

Fuji Electric 2MBI Series Technical Notes

The Fuji Electric 2MBI Series represents one of the most widely deployed families of dual IGBT (Insulated Gate Bipolar Transistor) modules in global heavy industry. Installed across chemical processing plants, nuclear power auxiliary systems, petroleum refining facilities, steel rolling mills, and large-scale variable frequency drive (VFD) platforms, the 2MBI Series has established a dominant position in medium-voltage power conversion applications. Its standardized 2-in-1 dual switch topology — combining two IGBT chips and two freewheeling diodes in a single isolated base package — makes it the preferred building block for three-phase inverter bridges, active front-end rectifiers, and DC chopper circuits operating in the 600 V and 1200 V class range. The series covers collector current ratings from 50 A to 600 A, addressing both compact servo drive designs and high-power industrial inverter stacks. Fuji Electric's proprietary 5th and 6th generation IGBT chip technology, embedded within the 2MBI package, delivers low saturation voltage (VCE(sat)) characteristics that directly reduce conduction losses in continuous-duty industrial cycles.

The Evolution of 2MBI Architecture

Q: How are RFQ terms confirmed?
A: Quantity, required condition, documentation needs, destination and sourcing route are confirmed during RFQ review before quotation.

By the mid-1990s, Fuji introduced the N-series suffix variants (e.g., 2MBI300N-060), incorporating non-punch-through (NPT) IGBT chips. NPT technology improved short-circuit withstand time and ruggedness under fault conditions — a critical requirement for industrial drives operating in uncontrolled environments. The 060 voltage suffix denotes a 600 V blocking voltage class (VCES = 600 V), while 120 suffix variants address 1200 V applications.

2MBI Full Catalog & Functionalities (SKU List)

The following SKUs represent verified, commonly referenced models within the Fuji Electric 2MBI Series. Models are classified by function and voltage class:

600 V Class — Dual IGBT Modules (VCES = 600 V)

2MBI50N-060: 50 A / 600 V dual IGBT, compact VFD inverter bridge cell
2MBI75N-060: 75 A / 600 V dual IGBT, servo amplifier output stage module
2MBI100N-060: 100 A / 600 V dual IGBT, standard industrial inverter phase leg
2MBI150N-060: 150 A / 600 V dual IGBT, medium-power AC drive output switch
2MBI200N-060: 200 A / 600 V dual IGBT, high-current 3-phase inverter leg module
2MBI300N-060: 300 A / 600 V dual IGBT, heavy-duty VFD and UPS inverter stage
2MBI400N-060: 400 A / 600 V dual IGBT, large industrial drive power stack module
2MBI600N-060: 600 A / 600 V dual IGBT, high-power traction and crane drive module

1200 V Class — Dual IGBT Modules (VCES = 1200 V)

2MBI50N-120: 50 A / 1200 V dual IGBT, medium-voltage servo and spindle drive
2MBI75N-120: 75 A / 1200 V dual IGBT, elevator and hoist drive inverter cell
2MBI100N-120: 100 A / 1200 V dual IGBT, standard 1200 V class inverter phase arm
2MBI150N-120: 150 A / 1200 V dual IGBT, wind turbine converter sub-module
2MBI200N-120: 200 A / 1200 V dual IGBT, industrial press and extruder drive module
2MBI300N-120: 300 A / 1200 V dual IGBT, high-power pump and compressor VFD stage
2MBI400U4B-120: 400 A / 1200 V 5th-gen IGBT, current-production upgrade for legacy 400 A slots
2MBI600VN-120: 600 A / 1200 V 6th-gen IGBT, modern high-current replacement for obsolete 600 A variants

Sourcing Hard-to-Find & Obsolete 2MBI Series Parts

The majority of N-suffix 2MBI modules (2MBI300N-060, 2MBI200N-060, 2MBI150N-120, etc.) have been discontinued by Fuji Electric and are no longer available through standard distribution channels. However, the installed base of equipment using these modules — including Fuji FRENIC, Mitsubishi FR-series, and OEM-branded drives built between 1995 and 2015 — remains substantial in active service across petrochemical, pulp and paper, and water treatment facilities.

Quality Control for the 2MBI Series Range

The 2MBI package integrates two IGBT chips, two freewheeling diodes, and an isolated copper base plate within a single resin-encapsulated housing. Verification of module integrity requires testing beyond simple continuity checks. DriveKNMS applies the following test protocol to all 2MBI Series units processed through its facility: