FCN2420G273J-B Capacitors

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Film Capacitors

Film capacitors, also known as plastic capacitors, are a type of capacitor that uses a plastic film as the dielectric. This type of capacitor employs two pieces of plastic film, which are typically polypropylene or polyester. The plastic film material is often very thin and enables the capacitor to be lightweight and reduce size.

FCN2420G273J-B Application Field and Working Principle

FCN2420G273J-B film capacitors are typically used in high-frequency applications, such as RF and microwave, due to the low dielectric losses they experience. They are also used in applications where a higher peak- to-peak AC voltage rating is required. This product is designed to be used up to a low frequency of 300kHz.

FCN2420G273J-B capacitors consist of two dielectric materials, usually polypropylene or polyester. A metal foil electrode is insulated and aligned between the two dielectrics. The capacitor is made up of two sections. The lower section stores energy and is known as the dielectric, while the upper section supplies the energy and is known as the electrode. The dielectric section is an extremely thin plastic film, while the electrode consists of a thin metal layer.

When FCN2420G273J-B film capacitors come across an AC field, the metal electrode-dielectric generates an electrical bias. This causes the metal plate to interact with the dielectric material and create a varying electric field across the material. As the electric field changes, so does the stored charge. This stored charge is used to develop an electrical potential between the two metal layers.

The voltage built up across the metal layers is directly proportional to the capacitance value. The capacitance of an FCN2420G273J-B capacitor can be adjusted by changing the thickness of the metal layers, the surface area of the metal layers, or the dielectric material between them.

The capacitors are ideally suited for high frequency applications due to the low losses experienced and high temperature stability. Their excellent noise characteristics make them suitable for demanding applications. They are used in a wide range of applications such as decoupling and filtering in applications. They are also used in communication equipment and power supplies.

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