How long does the high voltage ceramic capacitor last?

High voltage generators use many high voltage ceramic capacitors and large capacity high voltage capacitors. Traditionally, guests generally use high-voltage film capacitors, but as the advantages of ceramic capacitors continue to manifest, in the future, film capacitors will appear less and less in high-voltage generators.

Before the work (13549300303) has analyzed the advantages and disadvantages of high-voltage film capacitors and high-voltage ceramic capacitors, mainly the following:

1. Relatively speaking, the voltage of a high voltage ceramic capacitor is higher. The capacitance of the film capacitor is relatively low, and the operating voltage is not as high as that of the ceramic capacitor. This is a consensus;

2. There are advantages and disadvantages, the capacity of ceramic capacitors is small. The capacity of high-voltage ceramic capacitors is relatively small, but now the latest products of Meishi capacitors have been introduced, and high-capacity high-voltage ceramic capacitors such as 30KV20000PF, 40KV15000PF, 50KV 10000PF have been successfully developed.

3. The high-voltage ceramic capacitor has a longer service life. The life of a film capacitor is three or two years, and a good product will not exceed five years. High-voltage ceramic capacitors are different. For example, Meishi capacitors are openly promised: for 20 years, at least 10 years.

4. The internal resistance of the high voltage ceramic capacitor is smaller. This is determined by the respective structural characteristics. The internal resistance of the high-voltage ceramic capacitor is small, and the film capacitor is wound by the winding method, which causes the internal resistance to be large. Another negative effect of this large internal resistance is that the internal resistance of the capacitor will continue to increase during repeated charge and discharge, and the capacitor will be disabled in the circuit at a certain time.