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Film Capacitors

Film capacitors belong to the category of the most modern capacitor types that exist, offering a number of advantages compared to conventional capacitors, such as ceramic and electrolytic. By the looks of it, film capacitors are created by winding up an alternating-layered film dielectric, mainly PET (polyethylene terephthalate), and are then packaged within an epoxy encapsulation. As the dielectric medium in film capacitors tends to be much thinner than in ceramic capacitors, thereby offering a higher capacitance per given size, film capacitors are much smaller in size, yet powerful enough to be used wherever a high-frequency application or signal filtering is needed.

BFC241912002 Application Field and Working Principle

The BFC241912002 film capacitor provides reliable power with a small size. A 3.0μF capacitance rating makes it an ideal choice for applications in which the user needs high capacitance with a limited size or low ESR (equivalent series resistance). The BFC241912002 has a low resistance of just 0.1ohm (at 100kHz), allowing it to operate in a wide variety of applications, such as portable audio devices, medical equipment and automotive power systems.

The working principle of the BFC241912002 lies in its alternating film dielectric layers and coating material, which together form electrodes that are placed between layers of alternating film. The film layers act as an electrical insulator, preventing electricity from crossing from one layer to another. The alternating layers of film and coating material are separated by a thin electrolyte, allowing electricity to flow between the layers when a voltage is applied to the capacitor.

The BFC241912002 film capacitor is capable of withstanding high voltages and can be used in a range of applications, including portables audio devices and cell phones, among others. Furthermore, it offers low ESR and a stable capacitance even under high temperatures.

Overall, the BFC241912002 film capacitor is a reliable choice for applications in which a small size and a high capacitance are needed. It offers a low ESR and a high voltage withstand capability for a wide range of applications.

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