This part is a kind of semiconductor called JC201DC.

Function of this product has AC Solid State Relay.

Manufacturers : ETC

Image and pinout :

Some of the text within the PDF file :

JC201DN, JC201DC AC Solid State Relay JC SERIES J C 2 0 1 D C Tope Co., Ltd. Tel: (02) 8228-0658 Fax: (02) 8228-0659 http://www.sensor.com.tw e-mail: tope@ms1.hinet.net 178 S3C-215WDV, JC201DN, S3C-225WDV JC201DC JEL http://www.jelsystem.co.jp E-mail:ssr@jelsystem.co.jp 179 JC201DN, JC201DC Item Symbols Units General Input Output Item Symbols Condition MIN TYP MAX Units http://www.jelsystem.co.jp General Input Output E-mail:ssr@jelsystem.co.jp 180 JC201DN, JC201DC http://www.jelsystem.co.jp E-mail:ssr@jelsystem.co.jp 181 JC201DN, JC201DC http://www.jelsystem.co.jp E-mail:ssr@jelsystem.co.jp 182 JC201DN, JC201DC http://www.jelsystem.co.jp E-mail:ssr@jelsystem.co.jp 183 [ ... ]

JC201DC PDF Datasheet Download