The 8Y16070019 is an SMD (Surface Mount Device) Crystal Resonator, made by TXC Corporation. It features a SMD-2016 RoHS (Restriction of Hazardous Substances) compliant package, meaning it is compliant with the European Union's mandate on the hazard requirements of certain chemicals used in the manufacture of electronics, and has a miniaturized form factor, providing a high level of integration and functional density. The resonator is a type of electronic component designed to precisely control the frequency of an oscillator, and is widely used in communications, RF, and signal processing applications.