CB042K0103KBC Capacitors

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Film Capacitors

A film capacitor, or plastic film capacitor, is an electrical capacitor, a hardware device commonly used in electronics and circuitry, consisting of a plastic film as the dielectric, with metallic electrodes on the two sides.

CB042K0103KBC Application Field and Working Principle

The CB042K0103KBC is a film capacitor specially designed for AC mains filtering and DC blocking applications. It features a sink current of up to 300 mA, a dielectric of polypropylene plastic and a capacitance range from 100 pF to 10 μF. Its voltage rating is 250VAC and the leakage current is 1mA or less.

Polypropylene plastic is the chosen dielectric for the CB042K0103KBC, which has the advantage of providing excellent insulation resistance, high volumetric efficiency, low dielectric losses and excellent frequency characteristics. These characteristics allow the CB042K0103KBC to work well in high frequency and high voltage applications, as well as in low frequency, pulsed and DC applications.

The working principle of the CB042K0103KBC is quite similar to other film capacitors. It utilizes a dielectric material to control the flow of charge between the two electrodes. The capacitor’s capacitance will vary depending on the thickness and dielectric material properties of the dielectric. The charge accumulates on the capacitor’s plates and displaces the opposite charge in the form of an electric field. When an alternating voltage is applied to the capacitor, the electric field will constantly change direction, leading to an accumulation of charge on each of the capacitor’s plates. This is what creates the capacitor’s electrical characteristics.

The CB042K0103KBC is mostly used for AC mains filtering and DC blocking applications since it features a voltage rating of 250VAC and high AC ripple current handling capabilities. It has high volumetric efficiency, good temperature stability and low dielectric losses, which make it suitable for high frequency and high voltage applications. It is also used in low frequency, pulsed and DC applications as it has excellent frequency characteristics and low impedance.

In conclusion, the CB042K0103KBC is a film capacitor specially designed for AC mains filtering and DC blocking applications. It has a voltage rating of 250VAC and a capacitance range of 100 pF to 10 μF. It is known for its excellent insulation resistance, high volumetric efficiency and low dielectric losses, making it suitable for high frequency and high voltage applications as well as for low frequency, pulsed and DC applications.

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