This part is a kind of semiconductor called TCA785.
Function of this product has Phase Control IC.
Manufacturers : Infineon Technologies
Image and pinout :

Some of the text within the PDF file :
TCA 785 Phase Control IC TCA 785 Bipolar IC Features q q q q q q q q Reliable recognition of zero passage Large application scope May be used as zero point switch LSL compatible Three-phase operation possible (3 ICs) Output current 250 mA Large ramp current range Wide temperature range P-DIP-16-1 Type TCA 785 Ordering Code Q67000-A2321 Package P-DIP-16-1 This phase control IC is intended to control thyristors, triacs, and transistors. The trigger pulses can be shifted within a phase angle between 0 ˚ and 180 ˚. Typical applications include converter circuits, AC controllers and three-phase current controllers. This IC replaces the previous types TCA 780 and TCA 780 D. Pin Definitions and Functions Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 Pin Configuration (top view) Semiconductor Group [ ... ]
TCA785 PDF Datasheet Download
