Electronic Design - Classification of metal film capacitors and other capacitors

With the more and more applications of metal film capacitors, our use frequency increases gradually. What is the classification of metal film capacitors and other capacitors? For this reason, ipcb makes a brief introduction. You might as well look down with ipcb!

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

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

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

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

Category 2: classified according to the structural form of capacitor.

1. Fixed capacitor: a 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 basically include fixed capacitors, fine-tuning capacitors and electrolytic capacitors.

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