BN274L0684K--

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Film capacitors (also known as film dielectric capacitors) are among the most commonly used capacitors in power electronics, and their applications cut across all types of industries, communications, and consumer products. The BN274L0684K is a film capacitor made by Panasonic, and this article will discuss the application field and working principle of this particular model of film capacitor.

BN274L0684K application field

The BN274L0684K can be used in a wide range of applications, including power supplies, motor drives, lighting inverters, air conditioners, and more. In terms of direct application, the BN274L0684K can be used as an energy storage device, a source of charge injection, or a bypass capacitor. In each of these cases, the ultra-low ESR and excellent heat resistance of the BN274L0684K make it suitable for use in high power electronics systems.

The BN274L0684K also makes a great selection for EMI/RFI suppression, offering both high frequency response and stability over a wide temperature range. As a general rule, the BN274L0684K can be used as an example of film capacitors in applications where stability and performance are of paramount importance.

BN274L0684K working principle

The BN274L0684K is a miniature aluminum thin-film capacitor, meaning it utilizes an aluminum film layer as a dielectric between two conductive plates. This combination creates an electric field between the plates which stores energy, allowing the BN274L0684K to act as an energy storage device. As the voltage across the aluminum oxide film of the BN274L0684K increases, the electric field grows stronger and its capacitance increases.

In terms of construction, the BN274L0684K consists of two aluminium plates covered with a dielectric layer of aluminum oxide. The two plates are connected by a conductor, which is usually made of a combination of copper, silver, and zinc. The aluminum oxide layer provides the BN274L0684K with insulation from the outside environment, making it suitable for use in EMI/RFI suppression and other such applications. Furthermore, the dielectric film can also be tuned to provide the desired performance range.

Conclusion

The BN274L0684K is a film capacitor made by Panasonic, and it is suitable for a range of demanding applications in power electronics. The BN274L0684K makes use of an aluminum oxide film as a dielectric between two aluminum plates, creating an electric field which stores energy and increases as the voltage across the dielectric increases. Furthermore, the BN274L0684K also offers excellent high frequency response, thermal stability, and excellent EMI/RFI suppression, making it a great choice for applications where stability and performance are of paramount importance.

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