This is a surface-mounted quartz crystal resonator manufactured by SJK, with a model number of 7U13521AE10UCG. It is a four-pad surface-mounted device, compliant with the RoHS (Restriction of Hazardous Substances) environmental protection requirements. The frequency is specified as 3225.0000 MHz ±30ppm. It has a very low aging rate of only 5Ppm/year. The device is 120mil wide, and designed for a maximum working voltage of 16V. Its operating temperature ranges from -20°C to +85°C. This is a high-precision quartz resonator that is often used in many electronic applications, such as Wi-Fi routers, GSM modules, GPS receivers, satellite equipment, and other applications that require an accurate time base reference signal.