BFC237517183

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Film Capacitors

A film capacitor, or polyester capacitor, is an electrical component primarily comprising a dielectric film coated on both sides with a metal foil. It is typically used in power supplies, radio frequency circuits, and charger circuits. BFC237517183 is one of the most popular film capacitors used in applications ranging from audio-frequency to ultra-high frequency (UHF).

Application Field

The BFC237517183 is often used in aircraft electrical systems, as it is resistant to harsh environmental conditions such as extreme temperatures. The films used in this capacitor are flame-retardant, enabling it to be used in high temperature environments. Its robust construction also allows it to survive repeated voltage surges, which is why it is favoured in aircraft electrical systems. In addition, due to its metalized construction, which provides greater stability, the BFC237517183 is commonly used in high ripple current and parallel circuits. It is further favoured in these scenarios due to its resistance to temperature cycling and outgassing, which can affect performance in parallel circuits.

Working Principle

The BFC237517183 works in the same way as any other film capacitor, although the specific components and build of the capacitor will determine its specific characteristics. The BFC237517183 film capacitor comprises two metal foils, separated by a dielectric material with a polyester film in between. When a voltage is applied, the metal foils experience screening, where the opposite charge from the end adjacent to it will “cancel out” its charge. In a film-type capacitor, this process occurs in an ultrathin dielectric film, allowing the electric field to be distributed over the total length of the film so that electric current can only pass through the capacitor in one direction. When it comes to the BFC237517183 specifically, the dielectric film used is a flame-resistant polyester film, due to its ability to survive the adverse temperatures associated with aircraft electrical systems. This film also provides the capacitor with excellent temperature characteristics, meaning that its capacitance will remain constant throughout a wide range of temperatures.

Conclusion

The BFC237517183 film capacitor is one of the most popular types of capacitors used in applications ranging from audio-frequency to ultra-high frequency (UHF). This capacitor is favoured in aircraft electrical systems due to its robust construction, flame-resistant properties, and its superior temperature characteristics. Working similarly to other film capacitors, the BFC237517183 uses a thick dielectric film which allows current to only be able to pass through the capacitor in one direction.

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