This is a surface mount crystal resonator manufactured by SJK. It has a model number of 7E27120E08UCG and is RoHS compliant. It is a 2520 size, 4-pin SMD crystal resonator that is designed for use in surface mount applications. It has a frequency range of 9.8MHz to 10MHz and a resisatance of 45ohm. It has an operating temperature range of -20°C to 70°C and an operating current of 6mA. It has a maximum load capacitance of 15pF. It is designed for applications such as mobile communication systems, office equipment, industrial automation, and microcontrollers.