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A brief introduction of metal film capacitors|Focus on manufacturers of high-end brand capacitors

by:Shenmao     2021-03-23
The film capacitor has many excellent characteristics, so it is an excellent capacitor. Its main equivalences are as follows: 1. No polarity, high insulation resistance, excellent frequency characteristics (wide frequency response), and low dielectric loss. Based on the above advantages, film capacitors are widely used in analog circuits. Especially in the signal cross-connection part, capacitors with good frequency characteristics and extremely low dielectric loss must be used to ensure that the signal will not be too distorted when it is transmitted. 2. Among all plastic film capacitors, polypropylene (PP) capacitors and polystyrene (PS) capacitors have the most significant characteristics. The usual method of making metallized film capacitors is to use aluminum and other metal foils as electrodes and plastic films to be overlapped and wound together. However, there is another manufacturing method for film capacitors, called Metallized Film. The method is to deposit a thin layer of metal on a plastic film by vacuum evaporation to serve as an electrode. In this way, the thickness of the electrode foil can be omitted, and the volume of the capacitor per unit capacity can be reduced. Therefore, the film capacitor can be easily made into a small and large-capacity capacitor. For more details, please call the toll-free hotline 4006299138. For example, the common MPP capacitor is the name of the metalized polypropylene film capacitor (Metailized Polypropylene Film Capacitor), and the MPE is the name of the metalized Polypropylene Film Capacitor (Metailized Polyester). Films used in metallized film capacitors include polyethylene, polypropylene, polycarbonate, etc. In addition to winding types, there are also laminated types. Capacitors of this type of metallized film have a so-called self-healing action, that is, if the tiny part of the electrode is short-circuited due to the fragile electrical boundary, the electrode metal around the short-circuited part will be affected. Due to the electrostatic energy or short-circuit current carried by the capacitor at that time, a larger area of u200bu200bmelting and evaporation is triggered to restore the insulation, so that the capacitor returns to the role of the capacitor.
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