This part is a kind of semiconductor called AQY414.
Function of this product has HIGH VOLTAGE/ PHOTO MOS RELAY.
Manufacturers : Etc
Image and pinout :

Some of the text within the PDF file :
AQY414S HIGH VOLTAGE, PHOTO MOS RELAY 65 Shark River Road, Neptune, New Jersey 07753-7423 Tel: 732-922-6333 Fax: 732-922-6363 E-Mail: globalcomponents@msn.com 65 Shark River Road, Neptune, New Jersey 07753-7423 Tel: 732-922-6333 Fax: 732-922-6363 E-Mail: globalcomponents@msn.com [ ... ]
AQY414 PDF Datasheet Download
