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Characteristics of Film Materials for Film Capacitors

Characteristics of Film Materials for Film Capacitors

2024-01-05

The electrical characteristics, temperature and frequency characteristics of a film capacitor depend primarily on the type of material forming the capacitor dielectric. The table below lists the most important characteristics of the main plastic film materials used today. The properties of the mixed membrane material are not listed here. The data in this table is taken from specifications published by various manufacturers of film capacitors for industrial electronic applications. A wide range of values for the dissipation factor includes typical and xxx specifications from various manufacturers' data sheets. Typical electrical values for power supplies and large AC capacitors are not included in this table.

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Film Capacitor Introduction

Film Capacitor Introduction

2024-01-05

Film capacitors, plastic film capacitors, film dielectric capacitors or polymer film capacitors, collectively referred to as film capacitors and power film capacitors, is a kind of insulating plastic film as the dielectric, sometimes with paper as the electrode carrier of the capacitor. According to the required dielectric strength, the dielectric film is drawn to an extremely thin thickness by a special process, and then equipped with electrodes. The electrodes of the film capacitor can be metallized aluminum or zinc, applied directly to the surface of the plastic film, or a separate metal foil. Two of these conductive layers are wound into cylindrical windings

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Types of Film Capacitors

Types of Film Capacitors

2024-01-05

The terminals are all located on one side of the capacitor body. To facilitate automatic insertion, radial plastic film capacitors are typically constructed with a standard distance of terminal spacing, starting with a 2.5mm pitch and increasing in 2.5mm steps. The radial capacitor may be encapsulated in a plastic housing or dipped in epoxy to protect the capacitor body from the environment. Although the transient heat of reflow soldering will cause high stress in the plastic film material,

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Overview of the structure and characteristics of film capacitors

Overview of the structure and characteristics of film capacitors

2024-01-05

The film capacitor is made of two plastic films covered with metal electrodes, wound into a cylindrical winding, connected to the terminals, and then packaged. In general, the film capacitor is not polarized, so the two terminals are interchangeable. There are two different types of plastic film capacitors, made from two different electrode configurations:

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Standardization of film capacitors

Standardization of film capacitors

2024-01-05

All standardization of electrical and electronic components and related technologies follows the rules set by the International Electrotechnical Commission (IEC), a non-profit, non-governmental international standards organization. The IEC standard is harmonized with the European standard EN. Procedures for the definition of characteristics and test methods for capacitors for use in electronic equipment are specified in the General Specification:

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