This part is a kind of semiconductor called MC3PHAC.

Function of this product has 3-Phase AC Motor Controller.

Manufacturers : Motorola

Image and pinout :

Some of the text within the PDF file :

Freescale Semiconductor, Inc. Data Sheet MC3PHAC/D Rev. 1, 4/2002 3-Phase AC Motor Controller Freescale Semiconductor, Inc... Overview The MC3PHAC is a high-performance monolithic intelligent motor controller designed specifically to meet the requirements for low-cost, variable-speed, 3-phase ac motor control systems. The device is adaptable and configurable, based on its environment. It contains all of the active functions required to implement the control portion of an open loop, 3-phase ac motor drive. One of the unique aspects of this device is that although it is adaptable and configurable based on its environment, it does not require any software development. This makes the MC3PHAC a perfect fit for customer applications requiring ac motor control but with limited or no software re [ ... ]

MC3PHAC PDF Datasheet Download