This is a quartz crystal unit specification sheet, its model is C6S-12.000-12-3030-X, the frequency is 12.000MHz, the frequency stability is ±30ppm, the working temperature range is -40℃ to +85℃, the storage temperature range is -55℃ to +125℃, the annual aging is ±3ppm, the load capacitance is 12pF, the parallel capacitance is maximum 7, the equivalent series resistance is 80 ohm, the maximum drive level is 100 typical-500 maximum uW, the soldering reflow characteristic is +260℃, the duration is 10 seconds.