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Film Capacitors

Film capacitors, such as the ECH-S1823JZ, are a type of electrostatic capacitor. These capacitors are constructed with a dielectric material, usually a plastic film, between two conducting plates. Film capacitors are non-polarized, meaning they store electrical energy regardless of the polarity of the applied voltage.

ECH-S1823JZ Application Field and Working Principle

The ECH-S1823JZ is a polypropylene film capacitor with a voltage rating of 800Vdc. It has a tolerance of +20%, -10% and a self-healing safety feature that helps protect against breakdown due to high voltage. Its application field can range from power line filters to a snubber capacitor in a motor drive.

The working principle of a film capacitor is based on the creation of an electrostatic field. When a voltage is applied to the capacitor, an electric field forms between the two plates. This electric field polarizes the molecules in the dielectric material, creating a positive charge on one plate and a negative charge on the other. This charge creates an electrostatic field that stores electrical energy in the capacitor.

When the Voltage is removed, the stored energy is released slowly as the electric field between the plates dissipates. This slow discharging process makes the film capacitor ideal for energy-containing applications such as snubber circuits and line filters.

The ECH-S1823JZ is a quality film capacitor with excellent electrical characteristics. It is designed to operate in temperatures ranging from -25°C to +105°C and has a reduced ESR (equivalent series resistance) compared to traditional film capacitors. Its high reliability and long life make it an ideal choice for a variety of applications.

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