BFC2370EC273

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Film Capacitors

Film capacitors are capacitors that are composed of thin film dielectric material which has been deposited on a substrate and the electrodes have been applied. The dielectric chosen will depend on the type of application as they are available in various materials

The most common type of film capacitor available is the BFC2370EC273. This type of capacitor utilizes a polyester film – also known as PET – as the dielectric material. The PET film is coated with a metallized layer of aluminum on one side and with tin on the other.

Application Field

The BFC2370EC273 film capacitor comes in a wide range of values from 0.01µF to 0.47µF. This variety of values gives them a wide application field. They are suitable for many applications such as DC/DC converters, AC/DC power supplies, signal filtering, precision circuits, RF interference suppression and audio crossovers.

The BFC2370EC273 are rated for a temperature range of -55 to +125 degrees Celsius and can operate at frequencies up to 10 MHz. They also have a high amount of insulation resistance and a self-healing dielectric.

Working Principle

The working principle of the BFC2370EC273 film capacitor is based on electrical charge storage. When an electric field is applied to the capacitor, electrical charges start to accumulate on each of its plates. This displacement of charge creates an opposing voltage that counteracts the applied voltage. The sum of the two voltages is what is known as the capacitance of the device. As the voltage increases, the charge stored on each of the plates increases and the capacitance of the film capacitor also increases.

Once the capacitor has reached its maximum charge capacity, the voltage will begin to decrease. This phenomena is known as “dielectric saturation”. If the voltage is increased further, the capacitor will become less effective and will be unable to store electrical charge. This is because the dielectric film has become saturated with charge and is no longer capable of accepting charge.

The BFC2370EC273 is an effective and reliable film capacitor for many different applications. Its wide range of values, temperature range and low-loss performance make it a great choice for many circuits and applications.

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