This is an SMD (Surface Mounted Device) crystal resonator manufactured by SJK that conforms to the RoHS standard for environmental protection. It has a circular shape with a 7mm length and a width of 2.8mm. This part has four pins, with a very small profile and a low profile package. It provides high stability and low frequency jitter. It is a temperature-compensated oscillator designed for use in communication systems, networking, and other applications requiring high frequency accuracy and stability. It is designed to provide very low cost and excellent performance.