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Development status of metallizedfilm capacitors

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Development Status of Metallized Film Capacitors in China: Since the advent of hand-produced metallized film capacitors in the 1960s, China's metallized film capacitors have roughly experienced three development trends; in the 1980s, color TV overproduction was used as an opportunity to complete the process from manual operation to stand-alone automation The introduction of technological transformation.


In the 1990s, the technological transformation of miniaturization (winding type and metallized laminated type) of metallized film capacitors was completed with the "short, small, light, and thin" electronic electronics; since this century, Reliability requirements have undergone a technical transformation focusing on safety capacitors. In recent years, metallized film capacitors have ushered in the fourth wave of development, mainly joint-stock and private investment.


Advantages of metallized film capacitors: metallized polyester film winding, non-inductive structure epoxy resin encapsulation, CP wire has good self-healing performance, high insulation resistance, and stable capacitance. It is suitable for DC and pulsating circuits, and is widely used in filtering, DC blocking, bypassing, coupling and noise reduction of various electronic appliances and electrical equipment.


Metallized film capacitors can withstand ripple current capacity of ten times to dozens of times the rated ripple current of aluminum electrolytic capacitors of the same capacity. In order to achieve higher current resistance, aluminum electrolytic capacitors usually use larger capacity to meet the requirements, and more Large capacity is an unnecessary waste of cost and installation space. Therefore, metallized film capacitors are in great demand in the market.


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