BFC238564751

Film Capacitors

Film capacitors, also known as "plastic film capacitors", "Polyester capacitors" or "Green capacitors", are capacitors with a electrostatic insulator made of plastic film as separator. They have a thin plastic film, with a thin metalization layer applied to one or both sides and connected to an electric terminal on each side.

Film capacitors can come in many forms. For example, they can have an axial lead or a radial lead, they can be polarized or non-polarized, they can be surface mount or through-hole mount and they can bear an electrolyte or be dry.

BFC238564751 capacitors are film capacitors designed for use in all types of electronic equipment. They are designed for snap-in or screw mount installation and are available in a variety of capacitance and voltage ratings. They are designed to have a long life, stable performance and good immunity to electromagnetic interference.

Application Field and Working Principle

BFC238564751 capacitors are used in a wide variety of electronic equipment, including radio frequency, audio, and electro-optical equipment. They are designed to provide low cost, reliable performance and a wide temperature range of operation.

The working principle of a film capacitor is based upon the fact that electric charge is stored on a thin dielectric film. This film is made of polyester, polypropylene, polyester-carbon or polylovelyke. The metalized electrode layers are printed on the two sides of the plastic film, and the two layers are insulated from each other. A voltage applied to the system will cause electric charge to accumulate on the electrodes and form an electric field.

The electric field produces an energy storage effect known as the capacitance of the capacitor. The amount of capacitance that can be stored in a capacitor is determined by the thickness and permittivity of the dielectric film used, as well as the area of the capacitor and the distance between the two electrodes.

The majority of film capacitors have a specified maximum rated temperature, temperature shift and voltage. These ratings are determined by the characteristics of the capacitor and the environment in which it is used. Proper selection of a capacitor for use in a particular application is essential. Failure to do so can significantly degrade the performance of the device.