BLC140J901B4B

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Film Capacitors

A film capacitor, also known as a plastic film capacitor, or more accurately a film dielectric capacitor, is a capacitor that uses a plastic film as the dielectric. It is one of the most-used forms of capacitor, accounting for more than half of all capacitor production. The thin film, usually polypropylene, gives the capacitor greater stability under varying temperature and humidity conditions, as well as providing a very low dissipation factor.

The BLC140J901B4B film capacitor is a very common film capacitor. It is able to handle voltage ratings up to 10kV, making it suitable for many high-voltage applications. Additionally, thanks to its design and construction, it has excellent temperature and voltage stability, making it ideal for applications where accuracy and reliability are key requirements. The BLC140J901B4B also has a very low equivalent series resistance, making it suitable for high-frequency, low-resistance applications.

The operating principle of the BLC140J901B4B film capacitor is quite simple. This capacitor consists of two metal plates, separated by a layer of thin plastic film. When a voltage is applied to the plates, an electrical field is created between them. This field causes an electrical charge to build up between the plates. The capacitance of the capacitor is determined by the size of the plates, and the thickness and dielectric constant of the film.

The BLC140J901B4B film capacitor has a wide range of application fields. It is commonly used for filtering, resonance, decoupling, and electromagnetic interference (EMI) applications. In addition, it can be used in medical, measurement, telecommunications, automotive, and entertainment systems. It is also often used in the construction of electrical motors and automobile ignition systems, as well as in energy and power supplies.

In conclusion, the BLC140J901B4B film capacitor is ideal for many high-voltage applications, thanks to its excellent temperature and voltage stability and very low equivalent series resistance. It is widely used for filtering, resonance, decoupling, and EMI applications, as well as in the construction of electrical motors and automobile ignition systems.

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