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Film Capacitors

Film capacitors are a type of dielectric capacitor that utilizes thin polymer films.Film capacitors are categorized by the type of film they use in their construction, with materials ranging from polyester and polypropylene through to higher quality films such as polystyrene. Film capacitors typically offer excellent capacitance stability, low loss, low ESR, good self-healing properties, and superior reliability, making them ideal for a variety of applications.

167472K400A Application Field and Working Principle

The 167472K400A film capacitor is part of the K4 Series from KEMET and is designed for use in snubber circuits and power supplies. It offers good frequency and temperature characteristics, as well as an extended operating temperature range from -55°C to 155°C. The film used is polypropylene and the capacitor is non-inductive, making it ideal for use in circuits that require high stability and low current. The 167472K400A has a capacitance of 0.0015 µF (1500 pF) and a voltage rating of 400 V DC. The working principle of a film capacitor is essentially the same as any other capacitor: two electrodes are separated by a dielectric material. In the case of the 167472K400A, the electrodes are made of aluminum foil and the dielectric material is polypropylene. When a voltage is applied across the electrodes, an electric field is created in the dielectric material. This electric field stores energy, which can then be released upon the removal of the voltage. This stored energy can then be used for a variety of applications, such as filtering, smoothing and snubbing.

The 167472K400A is an excellent choice for a variety of applications due to its low ESR and capacitance stability, as well as its extended operating temperature range. It can be used in snubber circuits, power supplies, and other applications that require high stability and low noise. Additionally, its non-inductive construction makes it highly suitable for use in circuits with high frequency impedances. Overall, the 167472K400A film capacitor is a great choice for a variety of applications, offering excellent performance and reliability in a wide range of conditions. With its extended temperature range and non-inductive construction, it is an ideal choice for power supplies, snubber circuits, and other high-stability applications.

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