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Film Capacitors

BFC236941823 is a member of the Film Capacitor family. Film capacitors, also known as Polyester Film or Mylar Film Capacitors, consist of a thin plastic film coated with a metal layer. The extremely thin film has excellent insulating properties, allowing very high capacitance values in a very small package. It can also handle high voltage, temperature, humidity, and environmental changes and still remain reliable with long life expectancy. This makes them suitable for many different applications including precision audio equipment, instrumentation, analogue signal processing, automotive electronics, and power supplies.

Application Field

BFC236941823 is a metalized polyester film capacitor which is suitable for a multitude of different applications. It can be used in precision audio and instrumentation equipment, analogue signal processing, automotive electronics, avionics systems, loop powered transducers, and any other application which requires high-accuracy electrical performance. It is also suitable for power supplies, charge pumps, and other general-purpose circuits. Due to its excellent insulating properties, the BFC236941823 is also suitable for applications that need robustness, such as pulse motor control, line matching and sail pitch control.

Working Principle

The basic working principle of a film capacitor is that they act as an electrical insulator, due to the very thin plastic film coating. This thin film is made up of an electrostatic charge. When the capacitor is connected to a voltage supply, this charge is stored on the thin film, creating a potential difference between the two surfaces of the capacitor. This potential difference produces a counteracting electric field, which produces a charge of equal magnitude on each side of the capacitor.

The capacitor stores the charge until it is discharged again. This is done by allowing current to flow through the capacitor, which causes the stored charge to be released, thus changing the potential difference across the capacitor. The amount of charge stored in the capacitor and its potential difference can be changed by controlling the voltage applied to it, and by controlling the length of time during which the voltage is applied. This makes film capacitors extremely versatile, as they can be used to store and release energy in precise and controlled manners.

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