（SMD3225-4PIN晶体谐振器尺寸及引脚说明）

关于晶体谐振器(晶体)的使用说明

Since the crystal unit is a passive component, it is important to have appropriate circuit conditions. Please be sure to check the circuit conditions before using the crystal units, and ensure the necessary circuit margin, and confirm that the desired frequency is output.
由于晶体谐振器是无源元件，因此为其提供合适的电路条件尤为重要。在使用晶体谐振器前请务必检查电路情况，以确保电路满足晶振起振条件，且所需频率已输出。

Moreover, please check the circuit conditions when using an existing crystal unit for another model or board. If the circuit conditions are not appropriate, there is a risk of oscillation stop or frequency deviation.
此外请注意：若在其他电路板上使用该型号晶体谐振器，请重新检查电路条件。如果电路振荡条件不适用，则存在振荡停止或频率偏差的风险。