Crystal resonator refers to a quartz crystal resonator made of quartz material, commonly known as crystal oscillator. It plays a role in generating frequency, has stable and good anti-interference performance, and is widely used in various electronic products. Main technical indicators: nominal frequency: The center frequency or nominal value of the frequency output by the oscillator. Frequency accuracy: The deviation of the oscillator output frequency from the nominal frequency at room temperature (25 ℃± 2 ℃). Adjusting frequency difference: The maximum allowable frequency deviation of the oscillator output frequency relative to the measured value at 25 ℃ within the specified temperature range. Load resonant frequency (fL): Under specified conditions, when a crystal is connected in series or in parallel with a load capacitor, its combined impedance exhibits resistance (resulting in resonance) at one of the two frequencies. When connecting load capacitors in series, the resonant frequency of the load is the lower of the two frequencies, while when connecting load capacitors in parallel, it is the higher of the two frequencies. Static capacitance: The capacitance in an equivalent circuit that is connected in parallel with the series arm, also known as parallel capacitance, usually represented by C0. Working temperature range: The temperature range that can ensure that the output frequency of the oscillator and its various characteristics meet the indicators
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