170393K250CB

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Film capacitors, also known as ‘Plastic Film Capacitors’, are non-polarized capacitor systems, built on thin layers of plastic (typically Polyester, Polypropylene or Polycarbonate) that serve as insulation materials on an aluminum foil or copper wire electrode.

In the specific case of the 170393K250CB, the polyester film capacitor is an ideal capacitor for AC applications due to its higher dielectric strength and increased stability over time and frequency. The capacitor boasts a wide operating temperature range and is suitable for use in a number of areas including motor control, lighting, audio and low frequency applications.

The underlying principle of operation of a film capacitor rests on the electrical field generated by a charge stored in two adjacent conductors. In the case of a film capacitor, these conductors are typically layers of metal (foil or wire) that have been isolated from each other by a thin layer of a plastic or dielectric material. This electric field between the two neighboring conductors creates an energy storage medium - in other words, a capacitor.

When a voltage is applied to this film capacitor system, the metal conductors deform slightly, creating a very small distance between the two sides. This separation of the metal conductors triggers the buildup of a charge, which produces a corresponding electric field inside the capacitor. This electric field then affects the charges and builds up electrical energy within the system. As the voltage applied to the capacitor reaches the breakdown voltage, a spark discharges the energy stored between the two conductors.

The high dielectric strength of the polyester film, combined with its moisture resistance and stability over temperature and frequency, makes this particular capacitor ideal for AC applications with high voltage and current ratings. These characteristics and the fact that the capacitor is self-healing make it ideal for applications such as motor control, lighting, audio and low frequency applications.

Additionally, due to its wide operating temperature range, the 170393K250CB is highly tolerant to temperature changes, making it suitable for outdoor environments and long-term use. It is also highly reliable and can withstand vibration, shock, and moisture very well.

Overall, the 170393K250CB is an excellent choice of film capacitor for AC applications due to its high dielectric strength, moisture resistance, and excellent temperature and frequency stability. In addition, the capacitor\'s wide operating temperature range, vibration resistance, and shock resistance make it suitable for a variety of outdoor and long-term applications, and its self-healing qualities make it extremely reliable.

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