May. 18, 2022
There are many types of film capacitors, which are classified into polyethylene capacitors, polypropylene capacitors, polystyrene capacitors and polycarbonate capacitors according to plastic films. According to different dielectrics, there are three types of film capacitors: T-type capacitors (polyethylene terephthalate), P-type capacitors (polypropylene) and N-type capacitors (polyethylene). It can also be divided into DC film capacitors and AC film capacitors according to the line ends.
For example, CBB capacitors in film capacitors are familiar to everyone, and they are frequently and widely used, but there is actually a type of film capacitors called CL capacitors. What is a CL capacitor?
CL capacitor is a type of film capacitor, which uses polyester film as the dielectric, metal foil as the electrode, tinned copper-clad steel wire as the lead, and the films are wound into a cylindrical non-inductive structure. CL capacitors are known as polyester capacitors. Commonly used CL capacitors in life are CL21 polyester film capacitors, CL21X polyester film capacitors, CL20 axial polyester film capacitors, etc.
CL capacitors have a wide range of capacitance, from 100pF to several hundred μF, and a wide range of operating voltages, from tens of volts to tens of thousands of volts.
CL capacitors have the following advantages:
1. High insulation resistance and large dielectric constant.
2. Good heat resistance, wide operating temperature range, able to work in the environment of -55℃~+120℃.
3. Good self-healing and excellent frequency characteristics.
4. Small size, suitable for a variety of working spaces.
5. The price is cheap, the cost is low, and it can be mass-produced.
Due to the above advantages of CL capacitors, they can replace paper capacitors and are widely used in DC circuits and pulsating circuits such as filtering, bypassing, and coupling.
JYH HSU(JEC) Electronics Ltd (or Dongguan Zhixu Electronic Co., Ltd.) has engaged in the electronic component industry for many years, and our technical engineers can help you solve related problems. When purchasing varistors, you need to find out whether the products come from regular manufacturers. A good varistor manufacturer can reduce many unnecessary troubles.
JEC has over 30 years of manufacturing experience in the electronic components industry. If you have technical questions or need samples, please contact us.
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