BFC233868436

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Film capacitors, sometimes known as plastic or polyester capacitors, are a type of capacitor. The term "film capacitor" also includes metallized film capacitors and foil capacitors, both of which are made using the same technology as plastic film capacitors. Film capacitors manufactured with metallized film are usually small and inexpensive, which makes them an ideal choice when space and cost are major considerations.

The BFC233868436 is a series of polyester film capacitors, which are most commonly used for signal filtering and DC blocking applications. The BFC233868436 is designed to operate in temperatures ranging from -55 to +105°C and has a voltage rating of up to 630VAC. The device is available in a variety of capacitance and tolerance ratings to meet the requirements of different applications.

Applications

Film capacitors are used in a variety of applications for noise or interference suppression and AC line bypassing. They are particularly well-suited for applications such as power supplies, signal processing circuits, pulse circuits, and control circuits, where stable operation in harsh environments is required. Film capacitors can also be used as acoustic dampers for preventing audible noise in audio systems.

Working Principle

The construction of a film capacitor makes use of two layers of a dielectric material separated by layers of electrodes. This design allows the dielectric material to be in direct contact with the electrodes, providing a low-loss connection. The dielectric material used in film capacitors is an important factor in determining the characteristics of the device. The choice of the dielectric material is based on the required parameters such as temperature range and current frequency. The dielectric layer must be capable of allowing the desired flow of current while providing sufficient insulation to avoid shorting the electrodes. Once the electrodes are connected, the dielectric material acts as an insulator to prevent current flow between the two ends. The resulting electric field tends to add or subtract charge from one of the electrodes, depending on the polarization of the capacitor.

The BFC233868436 series of film capacitors utilizes polyester film as the dielectric material. This material is capable of providing stable capacitance and low losses over a wide range of temperatures and frequencies. The device is designed to be mechanically stable and vibration resistant. The polyester film is also highly resistant to mechanical and thermal shock, making it ideal for use in applications that require reliable operation in harsh environments.

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