This part is a kind of semiconductor called SKM40GD123D.

Function of this product has Standard IGBT modules.

Manufacturers : Semikron International

Image and pinout :

Some of the text within the PDF file :

SKM 40GD123D Absolute Maximum Ratings Symbol Conditions IGBT *: &* &*@ A: .; 7 84 9* .; 7 04= 9* &*@78%&*  ** 7 $== C A: D 8= C *: E 08==  .; 7 04= 9* &(@78%&(  7 0= C  G .; 7 04= 9* .; 7 084 9* . 7 84 9*     # Values 08== . 7 84 9* . 7 ?= 9* >= 1= 4= B 8= 0= Units  + + +  F SEMITRANS® 6 Standard IGBT modules SKM 40GD123D SKM 40GDL123D  Inverse Diode &( &(@ &( . 7 84 9* . 7 ?= 9* >4 1= 4= 14= 0== ' >= GGGH 04= ' >=GGGH 084 +* 0  G 84== + + + + + 9* 9*  Module & @ .; .  Features                                              !     "  #     [ ... ]

SKM40GD123D PDF Datasheet Download