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Film Capacitors

BFC238630394, or else known as Film Capacitors, is a type of capacitors which uses polymer films as its dielectrics. The dielectrics is being used to separate the two electrical conductors, which creates a minimal capacitance level. Commonly, this capacitor can be found embedded within small electrical devices, due to its compact form factor and minimal footprint.

Application Field

Unlike other capacitors, Film Capacitors are mainly popular for its wide variety of uses, due to its high-reliability and long-term stability. It is often being used in industrial applications, such as in AC motor starting, in DC circuit, high efficiency chargers, or converter module applications, to perform voltage smoothing, power and energy storage functions.

In consumer products, Film Capacitors can be used in devices such as TVs, computers, and audio systems, etc. as noise suppression components, field effect dampening components, as phase correction components, and voltage attenuation components. It may also be included in automotive equipment for safety protection against electrical interference.

Working Principle

Film Capacitors operate mainly by storing elecric energy between its dielectrics, and then releasing it when needed. Upon receiving the electricity, the material of the capacitor will vibrate its molecules, thus forming an electric field between the conductors, and resulting in an electrical charge. This charge will form a gain signal when for power conversion between the two conductors.

The materials used in Film Capacitors will determine its charge/discharge rate, which can affect the time it takes for the capacitor to complete its cycle. Generally, materials with a higher electrical resistance, such as rubber, wax, or paper, will have a slower discharge/charge rate in comparison to its counterparts.

With its low ESR (Equivalent Series Resistance), high ripple current capability, and low leakage current, Film Capacitors are becoming increasingly popular for its excellent performance in high-voltage situations. Its robust array of features and relative compactness has made the capacitor a staple electrical device in a variety of industries.

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