Quartz crystal resonators are electronic components that utilize the piezoelectric effect of quartz crystals to achieve high-precision and high-stability frequency output. They are indispensable basic frequency control devices in modern electronic equipment. Quartz crystal resonators are passive frequency components. Through the mutual conversion between mechanical vibration and electrical signals of quartz crystals, they generate stable resonant frequencies. They are usually used in conjunction with external oscillation circuits to form crystal oscillators, providing clock references or frequency references for systems.