This part is a kind of semiconductor called AQZ202.

Function of this product has (AQZxxx) POWER PhotoMOS RELAYS.

Manufacturers : Nais

Image and pinout :

Some of the text within the PDF file :

High capacity PhotoMOS Relay. (Load current Max. 4A) DC load type is available. FEATURES 21 .827 3.5 .138 12.5 .492 Power PhotoMOS (AQZ10❍, 20❍) TYPICAL APPLICATIONS • High-speed inspection machines • IC checker • NC machine, Robots • Office machines • Telecommunication • Automotive • Industrial control mm inch – 1 + 2 3 4 AC/DC type – 1 + 2 – 3 + 4 1. High capacity PhotoMOS Relay in a compact and slim 4-pin SIL 2. Extremely low ON resistance 3. Control low-level signal Power Photo MOS relays feature extremely low closed-circuit offset voltage to enable control of low-level analog signals without distortion. 4. Low-level off state leakage current 5. High I/O isolation voltage 2,500 V 6. Eliminates the need for a counter electr [ ... ]

AQZ202 PDF Datasheet Download