Crystal Resonator

A crystal resonator is an electronic component that utilizes the piezoelectric properties of quartz crystals to create stable and accurate oscillations at specific frequencies. It consists of a precisely cut quartz crystal wafer mounted between electrodes within a hermetically sealed package. When an electric field is applied, the crystal vibrates at its natural resonant frequency determined by its physical dimensions and cut orientation, providing exceptional frequency stability and low phase noise for timing and frequency control applications.

The crystal resonator operates on the piezoelectric effect where mechanical stress on the quartz crystal generates an electrical charge, and conversely, an applied electrical field causes mechanical deformation. When connected in an oscillator circuit, the crystal vibrates at its natural resonant frequency, creating a stable reference signal. The frequency is determined by the crystal's physical dimensions, cut angle, and temperature characteristics, with AT-cut crystals being most common for fundamental frequencies between 1-30 MHz.