The 7U16384E20UCG with SMD Crystal Resonators SMD-3225_4P RoHS is a surface mounted crystal resonator designed and manufactured by SJK. This device has an operating frequency of 16.384MHz and is made from quartz in a 4 pad package. The package is compliant to the RoHS Directive, which means it does not contain hazardous substances such as lead, mercury, and cadmium. The SMD Crystal Resonator is mainly used in the electronic timing circuits for generating a precise frequency.