This part is a kind of semiconductor called 7MBR50SB120-50.

Function of this product has Power Integrated Module.

Manufacturers : Fuji Electric

Image and pinout :

Some of the text within the PDF file :

SPECIFICATION Device Name Type Name Spec. No. : : : Power Integrated Module (RoHS compliant product) 7MBR50SB120-50 MS6M 0872 Apr. 26 ‘05 K.Muramatsu T.Hosen Apr. 26 ‘05 S.Ogawa K.Yamada MS6M0872 1 16 a H04-004-07b R e v i s e d Date Classification Ind. Content R e c o r d s Applied date Issued July-2005 date Drawn Checked Checked Approved Apr.-26-’05 Enactment S.Ogawa K.Yamada T.Hosen Jul.-14-’05 Revision a Revised outline drawing(3/16p) Add packing and labeling(6/16p) Add total weight of soldering material(7/16p) Revised RoHS Directive Compliance(7/16p) K.Muramatsu T.Miyasaka K.Yamada Y.Seki MS6M0872 2 16 a H04-004-06b ７ＭＢＲ５０ＳＢ１２０－５０ 1. Outline Drawing ( Unit : mm ) a (RoHS compliant product) 2. Equivalent circuit [ Converter [ ... ]

7MBR50SB120-50 PDF Datasheet Download