Simple classification of metal film capacitors and other capacitors

There are many kinds of capacitors. Generally, they can be divided into two classification methods

Type I: according to different tamping types of insulating materials (dielectric) used.

① Solid inorganic dielectric capacitor. Such as ceramic capacitor, mica capacitor, and monolithic capacitor.

② Solid organic dielectric capacitor, such as polyester film capacitor, polypropylene capacitor, polyester capacitor and other metal film capacitor.

③ Electrolytic capacitor, such as aluminum electrolytic capacitor (CD) and other electrolytic capacitors.

Category 2: according to the structure of capacitor.

① Fixed capacitor: capacitor whose capacitance cannot be changed.

② Variable capacitor and fine-tuning capacitor: capacitor whose capacitance can be adjusted manually within a certain range and a small range. It can also be divided into filter capacitor, coupling capacitor and bypass capacitor according to the purpose. In short, in general electronic circuits, capacitors are basically divided into fixed capacitors, fine-tuning capacitors and electrolytic capacitors.

The metal film capacitor is a metallized film capacitor that directly evaporates a thin metal layer on the plastic film as the electrode. The metal layer on this evaporation is thinner than the normal metal foil. Metal film capacitors are generally used in low-frequency circuits, while CBB capacitors in metal film capacitors are used in many circuits, and their performance will be better.