Will ceramic capacitors have a big hazard after the use?

Ceramic capacitors are generally designed for 20 years of use and are generally guaranteed for at least 10 years. Compared with some external capacitors, ceramic capacitors have the advantages of higher operating temperature, larger specific capacity, better moisture resistance, less dielectric loss, and a wider temperature coefficient of capacitance. Widely used in electronic circuits, the amount is very considerable.

Is the ceramic capacitor harmful to the service life? The main thing is which type of capacitor. One effect is welding, which is easy to oxidize for a long time, and there is a problem with welding; then there are quality problems such as a drop in capacitance. Also consider the material of the capacitor and the environment it maintains. Ceramic capacitors in an ideal environment can also be used, but care should be taken to ensure that the pins are firmly welded and not vulcanized.

However, in terms of product quality and reliability, it is recommended not to use, the expired capacitor should not be used, the outer layer of the two poles may be oxidized, the color is black, it is not easy to be welded, and the reliability of welding is reduced. In addition, the leakage current of the capacitor will increase due to moisture, which will affect the normal operation of the circuit.