This is a surface mount crystal resonator with a center frequency of 8.000 MHz. It has a temperature range of -40°C to 85°C, low power consumption (17µW), low ESR, and high frequency stability (-10 ppm/°C to +50 ppm/°C). The package size is 3225_4P and the part is Surface Mount Device (SMD). It has a RoHS compliant and is manufactured by SJK.