Shenmao Capacitors specialized in aluminum electrolytic capacitors from 1970

Self-healing of axial film capacitors

by:Shenmao     2021-04-12
It is indisputable that axial film capacitors are an excellent film capacitor. This type of axial film capacitor has some advantages such as small size and self-healing. Here we will specifically talk about self-healing. Compared with the metal foil type film capacitors, the self-healing properties of the metalized axial film capacitors should be said to be its biggest advantage. For more details, please call the free consultation hotline 0755-85274135. The so-called self-healing property means that if the dielectric of the axial film capacitor is defective at a certain point or the capacitor is broken down under the action of overvoltage, the capacitor is short-circuited and broken down. The metalized coating of the dots can be instantly evaporated under the action of the arc to form a small metal-free area, so that the two pole pieces of the capacitor can be insulated from each other again and can continue to be used, thus greatly improving the reliability of the axial film capacitor. For more details, please call the free consultation hotline 0755-85274135. However, metal foil type film capacitors do not have self-healing characteristics, and metal foil type film capacitors will have many short-circuit failures. Once short-circuited, the film capacitor no longer has the function of charging and discharging, that is to say, it is damaged. Of course, it is not to say that metal foil-type film capacitors are useless. This perception is wrong. For example, metal foil type film capacitors are more capable of withstanding voltage than axial film capacitors. Therefore, the existence of various types of capacitors has its own value, and what we have to do is to understand them more clearly so that everyone can make full use of them.
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