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Film Capacitors

170823K400GC Application Field and Working Principle

Film capacitors are one of the most common types of capacitors. They consist of one or more layers of insulating plastic films such as polypropylene, polyester, and polyethylene. The two film layers are held in place with a variety of materials, including metal foil, paper, or an acoustic baffle. The layers are electrically separated by a dielectric, which is a material that does not conduct electricity. Since the electrically separated layers are held together by a dielectric, significant levels of electrical energy can be stored.

170823K400GC is a type of film capacitor manufactured by Shanghai Pudong Electronics Group Co., Ltd, which is suitable for various industries such as automotive, electronics, electrical and telecommunications. It is widely adopted for its excellent energy storing capacity, good dielectric properties and outstanding electrical performance.

In general, the capacitor has two terminals and the main parts include two metal plates, a dielectric material and a container. When an external voltage is applied, electric charges of the same amount will accumulate on the two plates, separated by the dielectric material, thus forming an electrostatic capacitance. The electric charge storage capacity is proportional to the area of the baking plates, the dielectric constant of the material and the distance between them.

170823K400GC film capacitor is made of high-purity polymeric film as dielectric material, dispensing of excellent properties with high temperature and humidity, and low temperature aging, consistent energy density and large capacity. The capacitor does not contain any gases, such as halogen, sulfur, etc., so it can be used as a high-voltage power supply device under harsh environment applications.

What are the particular characteristics of 170823K400GC film capacitor? The advantages of this type of capacitor mainly include the following points:

• High pulse current: Its peak current capability is 40kA/μF.
• High insulation resistance and low ESR: Its insulation resistance reaches more than 100MΩ and its ESR is less than 0.2mΩ.
• High-precision capacitance: Its capacitance accuracy is within ±5%.
• Excellent temperature stability: Its capacitance temperature coefficient is about -40~-60ppm°C.
• Good mechanical properties: It is light, small, and has a high mechanical strength.

In summary, 170823K400GC film capacitor is suitable for a wide range of applications, from high voltage to high frequency. Its advantages of high pulse current, excellent insulation resistance, low ESR, precise capacitance and good temperature stability make it well suited for power supplies, electronic wiring boards and other electronic products.

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