This part is a kind of semiconductor called 6073A.

Function of this product has 2N6073A.

Manufacturers : ON Semiconductor

Image and pinout :

Some of the text within the PDF file :

2N6071A/B Series Preferred Device Sensitive Gate Triacs Silicon Bidirectional Thyristors Designed primarily for full-wave AC control applications, such as light dimmers, motor controls, heating controls and power supplies; or wherever full-wave silicon gate controlled solid-state devices are needed. Triac type thyristors switch from a blocking to a conducting state for either polarity of applied anode voltage with positive or negative gate triggering. Features http://onsemi.com TRIACS 4.0 A RMS, 200 − 600 V • Sensitive Gate Triggering Uniquely Compatible for Direct Coupling • • • • • to TTL, HTL, CMOS and Operational Amplifier Integrated Circuit Logic Functions Gate Triggering: 4 Mode − 2N6071A, B; 2N6073A, B; 2N6075A, B Blocking Voltages to 600 V Al [ ... ]

6073A PDF Datasheet Download