This part is a kind of semiconductor called AQG22212.
Function of this product has AQ-G RELAYS.
Manufacturers : Panasonic
Image and pinout :

Some of the text within the PDF file :
AQ-G VDE Slim type SSR for 1A and 2A control AQ-G RELAYS TYPICAL APPLICATIONS • Household appliances such as air conditioners, refrigerators and humidifiers • Healthcare and medical equipment • Industrial machinery such as NC machines, mounters, injection molders, and robots • Microcomputer boards • Amusement and amenity related equipment FEATURES 1. Space saving, Vertical size with a maximum thickness of 4.5 mm. Mounting space has been reduced to 30% (compared to conventional SSR’s) while meeting high density PC board mounting requirements. 2. Snubber circuit preventing malfunction 3. Zero-cross type and Random type available 4. High dielectric strength of 3,000V AC (between input and output) 5. Snubber circuit integrated The snubber circuit is integrated to prevent malfun [ ... ]
AQG22212 PDF Datasheet Download
