This part is a kind of semiconductor called ADT16C60.

Function of this product has 3 Quadrants Triacs.

Manufacturers : ADV

Image and pinout :

Some of the text within the PDF file :

ADV 3 Quadrants Triacs General Description High current density due to mesa technology .the ADT16C triac series is suitable for general purpose AC switching. They can be used as an ON/OFF function in applications such as static relays, heating regulation, High power motor controls e.g. washing machines and vacuum cleaners,Rectifier-fed DC inductive loads e.g.DC motors and solenoids , motor speed controllers. Features ◆ Repetitive Peak Off-State Voltage: 600Vand800V ◆ R.M.S On-State Current ( IT(RMS)=16A ) ◆ High Commutation dv/dt ◆ These Devices are Pb-Free and are RoHS Compliant ADT16C60/80 2.T2 3.Gate 1.T1 2 1 23 TO-220 Absolute Maximum Ratings Symbol VDRM VRRM IT(RMS) ITSM I2t dI/dt IGM PG(AV) PGM Tj TSTG Items Repetitive Peak Off-State Voltage Tj = 25°C R.M [ ... ]

ADT16C60 PDF Datasheet Download