How to pay attention to the longer service life of micro buzzer? When purchasing buzzer, many users focus on comparing the price and ignore the electrical performance parameters of the buzzer, which is easy to cause the mismatch between the buzzer and the PCB drive circuit, resulting in various quality problems. Matching the buzzer with PCB circuit is a method of long service life and not easy to break. In addition, the following matters shall be noted during use:
1. If the welding temperature is too high, it is easy to cause the shell of the buzzer to be deformed and the pins to be loose, resulting in no sound or small sound;
2. The starting voltage of the buzzer is low or too high, and it is easy to make a small sound or sand sound during use;
3. The buzzer has a small sound after being stored for a period of time, and becomes normal after being used for a period of time. This situation may be that the buzzer is affected by the humid environment, so attention should be paid to moisture protection.
4. When the buzzer works on the PCB board, there will be tone change or no sound. There is no problem when the unit is removed for test. This situation may be caused by the magnetic field interference of the buzzer.