This part is a kind of semiconductor called ACS102-6T.
Function of this product has Transient protected AC switch.
Manufacturers : STMicroelectronics
Image and pinout :

Some of the text within the PDF file :
ACS102-6T Transient protected AC switch (ACS™) Features ■ Needs no external protection snubber or varistor ■ Enables equipment to meet IEC 61000-4-5 ■ Reduces component count by up to 80% ■ Interfaces directly with the microcontroller ■ Common package tab connection supports connection of several alternating current switches (ACS) on the same cooling pad ■ Integrated structure based on ASD technology ■ Overvoltage protection by crowbar technology ■ High noise immunity - static dV/dt > 300 V/µs Applications ■ Alternating current on/off static switching in appliances and industrial control systems ■ Drive of low-power, high-inductive or resistive loads like: – relay, valve, solenoid – dispenser, door lock – micro-motor Description The ACS102-6T belongs to the AC [ ... ]
ACS102-6T PDF Datasheet Download
