This part is a kind of semiconductor called ARK111.

Function of this product has High-frequency RK relay.

Manufacturers : Panasonic

Image and pinout :

Some of the text within the PDF file :

șȒȅȓȋǷഽࢹÅୋܹ࢘‫ܩ‬ྈ໤Å ÅSDQDVRQLFGHQNRFRMSDF Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω ΩΩ ΩΩ ΩΩ ΩΩ ΩΩ ΩΩ ΩΩ șȒȅȓȋǷഽࢹÅୋܹ࢘‫ܩ‬ྈ໤Å ÅSDQDVRQLFGHQNRFRMSDF Ω Ω Ω Ω Ω Ω Ω Ω 2.0 1.8 1.6 1.4 1.2 1.0 300 COM-NO COM-NC 1.5 3 Ω 0 0.2 0.4 0.6 0.8 1.0 300kHz COM-NO COM-NC 1.5GHz 3GHz 0 20 40 60 80 100 300kHz COM-NO COM-NC 1.5 3 2.0 1.8 1.6 1.4 1.2 1.0 300 00 COM-NC COM-NO 1.5 3 0.2 0.4 0.6 0.8 1.0 300kHz COM-NO COM-NC 1.5GHz 3GHz 20 40 60 80 100 300kHz 1.5 șȒȅȓȋǷഽࢹÅୋܹ࢘‫ܩ‬ྈ໤Å ÅSDQDVRQLFGHQNRFRMSDF COM-NO COM-NC 3 100 80 60 40 20 0 80 100 130 150 10 8 6 4 2 0 80 100 [ ... ]

ARK111 PDF Datasheet Download