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Film Capacitors

A film capacitor, in its simplest form, consists of a base, film, and electrodes which are sandwiched in between. The thin film acts as the dielectric, which stores electrical energy. This type of capacitor will normally be constructed using polypropylene plastic, a dielectric material. The electrodes on the film capacitor are typically made of aluminium foil and copper. The film capacitor of type 684MHBS70K2H is a non-polarized capacitor, meaning it has no polarity and can be used in both AC and DC circuits.

Application Field and Working Principle

Film capacitors are used in many different applications in the field of electronics. Due to their low ESR, they are often used for applications where low ESR is required such as power supplies, audio circuits, and in high frequency switching. They are also often used for decoupling applications such as LCD televisions, computers, audio systems and power supplies, due to their excellent high frequency properties. The type 684MHBS70K2H capacitor is suitable for such applications.

The 684MHBS70K2H film capacitor is a non-polarized device and works on the same principle as other film capacitors. A dielectric material such as polypropylene plastic is placed between two electrodes, which form the plates of the capacitor. When a voltage is applied to the capacitor, the electric field stores the charge in the form of energy in the dielectric material between the plates. This stored energy is then released back into the circuit. The 684MHBS70K2H film capacitor is able to store a high amount of energy due to its large surface area and high dielectric constant of the polypropylene plastic, making it suitable for applications with high voltage and high frequency.

The 684MHBS70K2H capacitor also has a wide temperature range (from -40°C to +125°C) making it suitable for applications in harsh environments. Its self-healing properties mean that it is not prone to shorting out in the case of dielectric breakdown. It is also very small in size which makes it highly suitable for applications with limited space.

In summary, the 684MHBS70K2H film capacitor is an excellent option for applications where low ESR is required as well as applications in harsh, high-temperature environments. Its self-healing properties and large surface area make it especially suitable for high voltage and high frequency applications.

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