B32521C3334M189

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Film capacitors are electronic components capable of storing electric charge. Named after their construction material, they use a dielectric, usually a thin plastic film, in between metal plates or metalized layers on the plastics. Film capacitors offer great insulation properties in small packages, excellent long-term stability and very good self-healing properties. Those features have made them a popular choice across various industries.

B32521C3334M189 Application Field and Working Principle

The B32521C3334M189 is a polyester film capacitor which is commonly used to filter input and output signals within electronic circuitry. It has a capacitance range of 0.033µF and, working at a low temperature of 85℃, it has a rated working voltage of 50V. Since it is highly resistant to high and low temperature, humidity, and vibration, it can be used in all types of environmental conditions.

The basic working of all capacitors is the same, where two conductors or plates are separated by a dielectric material, creating an electrical field between the two. The thickness of the dielectric and distance between the two plates largely determines the capacity of the capacitor to hold charge. When a voltage is applied, the battery electrical field in the dielectric causes the positive and negative charge carriers from each plate to move through the dielectric towards the opposite plate. In this way, a capacitor works like a tank with two walls and a depth to hold charge.

A unique feature of the B32521C3334M189 is its self-healing properties. This happens by means of the electrical sparks that cause localised decomposition of the dielectric. This leads to the formation of a conducting path, which dissipates the charge on the impacted plates. As the charge dissipates, the dielectric repairs itself and the breakdown voltage increases again.

The B32521C3334M189 is widely used in various industries due to its versatile nature. Its applications range from filtering low-frequency signals in medical equipment, such as EEGs and ECGs, to regulating the AC voltage in audio and video systems, such as TVs and home theatres. Additionally, the B32521C3334M189 is often found in switching power supply, battery-powered circuits and in power-line communication links. It is also a great choice for DC-DC converters and frequency converters since its low dielectric absorption makes it ideal for use in converter applications.

In conclusion, the B32521C3334M189 is a film capacitor with excellent characteristics. It offers extremely high insulation and stability, as well as self-healing properties. With its wide-ranging applications, it is a popular choice for many industrial markets.

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