ECQ-E2105KFW

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Film Capacitors

ECQ-E2105KFW is a type of film capacitor that is widely used in a variety of applications in the electronic industry. A film capacitor is an electronic component that stores charges on two electrical conductors separated by an insulating film. Film capacitors are often referred to as polyester film capacitors due to the most commonly used dielectric material, polycarbonate or polyester.

Application Field

Film capacitors are used in a wide range of applications, including audio and video equipment, computers, television sets, automotive systems, lighting systems, and loudspeakers. They can also be used as filtering capacitors in power supplies, as well as in power amplifiers and other AC voltage control circuits.

In motor control applications, film capacitors are often used in small motor speed control (VFD) designs. They provide large capacitance values with high current capacity and low resistance. They are also well-suited for power factor correction applications, because they have a very low ESR (equivalent series resistance), which helps reduce power losses.

Film capacitors are also used in RF applications, such as RF filters and oscillators. These capacitors have very low dielectric absorption and minimal temperature drift, which makes them ideal for high frequency operation.

Working Principle

A film capacitor works by storing electrical charges on two electrical conductors that are separated by a thin layer of insulating film material. When a voltage is applied across the two conductors, an electric field is created, which causes electrons to move from one conductor to the other. The electrons are trapped in the thin insulating layer and build up an electric field, which stores the electrical charges.

The amounts of charge that can be stored in the capacitor depend on the area of the conductors, the distance between the two conductors, and the thickness and dielectric constant of the insulating material. The higher the dielectric constant of the material, the more electrical charges can be stored.

Film capacitors have a very low equivalent series resistance (ESR), which helps to reduce power losses in applications such as power factor correction. The low ESR also helps to reduce the power losses in high frequency applications, such as RF filters and oscillators.

Conclusion

ECQ-E2105KFW is a type of film capacitor, which is widely used in a variety of applications in the electronic industry. The applications include audio and video equipment, computers, television sets, automotive systems, lighting systems, and loudspeakers. They are also used in motor control and power factor correction applications, as well as in RF filters and oscillators. The capacitor works by storing electrical charges on two conductors separated by an insulating film and has very low equivalent series resistance (ESR), making it suitable for high frequency applications.

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