This part is a kind of semiconductor called 2MBI300N-120.

Function of this product has 1200V 300A 2-Pack IGBT.

Manufacturers : Fuji

Image and pinout :

Some of the text within the PDF file :

IGBT MODULE ( N series ) n Features • Square RBSOA • Low Saturation Voltage • Less Total Power Dissipation • Improved FWD Characteristic • Minimized Internal Stray Inductance • Overcurrent Limiting Function (4~5 Times Rated Current) n Outline Drawing n Applications • High Power Switching • A.C. Motor Controls • D.C. Motor Controls • Uninterruptible Power Supply n Maximum Ratings and Characteristics • Absolute Maximum Ratings Items Collector-Emitter Voltage Gate -Emitter Voltage Collector Current Max. Power Dissipation Operating Temperature Storage Temperature Isolation Voltage Screw Torque ( Tc=25°C) Symbols VCES VGES Continuous IC 1ms IC PULSE Continuous -IC 1ms -IC PULSE PC Tj Tstg A.C. 1min. Vis Mounting *1 Terminals *2 Ratings 1200 ± 20 300 600 300 600 2100 + [ ... ]

2MBI300N-120 PDF Datasheet Download