This part is a kind of semiconductor called 6MBI150U4B-120-50.

Function of this product has IGBT Module.

Manufacturers : Fuji Electric

Image and pinout :

Some of the text within the PDF file :

SPECIFICATION Device Name Type Name : IGBT Module (RoHS compliant product) : 6MBI150U4B-120-50 Spec. No. : MS5F 6194 Feb. 02 ’06 K.Muramatsu Feb. 02 ’06 M.W atanabe T.Miyasaka K.Yamada MS5F 6194 a 1 14 H04-004-07b Revised Records Date Classification Ind. Feb.-02-’06 Enactment Content Applied date Drawn Checked Checked Approved Issued date M.Watanabe K.Yamada T.Miyasaka Jun.-05 -’06 Revision a Revised VCE(sat), VF (P4/14) K.Muramatsu M.Watanabe K.Yamada T.Miyasaka MS5F 6194 a 2 14 H04-004-06b 1. Outline Drawing ( Unit : mm ) 6MBI150U4B-120-50　(RoHS compliant product) 2. Equivalent circuit 30,31 ,32 1 2 3 4 33,34 ,35 5 6 U 27,28,29 7 8 shows theoretical dimension. ( ) shows reference dimension. 9 10 V 24,25 ,26 11 12 16,17 ,18 19 20 W 21,22 ,23 13,14 [ ... ]

6MBI150U4B-120-50 PDF Datasheet Download