Development status of metallized film capacitor

Development status of metallized film capacitors in China: 1960s, metallized film capacitors produced by hand appeared. Since then, China's metallized film capacitor has gone through three development periods. Among them, the 1980s color TV overproduction, China's metallized film capacitor has therefore completed the introduction of technical transformation from manual operations to stand-alone automation.

In the 1990s, the electronic complete machine was developed as "short, small, light , thin". At the same time, the technical transformation of the miniaturization of the metallized film capacitor (wound type and metallized laminated type) was successful. After entering this century, in line with the reliability requirements of the entire electronic machine, the technical transformation mainly based on safety capacitors began. In recent years, the metallized film capacitor has ushered in the fourth development period, mainly in joint-stock system and private investment.

metallized film capacitor advantages: metallized polyester film winding; non-inductive structure epoxy resin encapsulation; CP wire unidirectional lead self-healing performance is good; high insulation resistance; Suitable for DC and pulsating circuits, widely used for filtering, DC blocking, bypassing, coupling and noise reduction of various electronic appliances and electrical equipment, etc.

The metallized film capacitor's ability to withstand ripple current is ten to dozens of times the rated ripple current of an aluminum electrolytic capacitor of the same capacity. In order to achieve higher current resistance, aluminum electrolytic capacitors usually use larger capacity to meet the requirements. Larger capacity is a waste of cost and installation space.

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