1. The crystal oscillator is a device sensitive to static electricity, so attention should be paid to anti-static;

2. The working voltage shall not be too high, and the power lead shall not be wrongly connected to avoid damaging the crystal oscillator;

3. The sealed crystal oscillator can only be cleaned with absolute alcohol, not ultrasonic;

4. The crystal oscillator processed by welding will always experience a frequency offset and generally disappear automatically. Therefore, the welding temperature shall not be too high;

5. When bending the pin, a certain distance must be left from the root.