SFT44T70J391B-00DU

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Film Capacitors

Film capacitors, also known as plastic film capacitors, are electronic components that use a thin film substrate as the dielectric layer between two electrical conductors. They are available in a wide range of form factors, styles and shapes, making them ideal for high-precision and industrial applications -from car audio to communications technology, medical instruments to measuring instruments. One of the most popular and versatile film capacitors of modern times is the SFT44T70J391B-00DU.

Application Field and Working Principle of SFT44T70J391B-00DU

The SFT44T70J391B-00DU is a low ESR (Equivalent Series Resistance) film capacitor with a capacity of 0.47μF and a working voltage of 250V AC/ DC. Its stylish and compact design makes it ideal for applications where there is limited space and improved performance characteristics are desired. It is commonly used in telecommunications equipment, industrial automation, and various types of instrumentation.

This device consists of a metallized polypropylene film that acts as the core insulation and dielectric layer, a thickness layer of pure aluminum foil and a layer of organic material that provides the necessary adhesion for the two layers. When an electric field is applied to the capacitor, the free electrons on the outer surface of the Aluminum film become mobile, causing an electric current to flow. This current passes through the foil and creates a potential difference between the two contacts, thereby generating an electric field across the dielectric material and creating the necessary capacitance.

The SFT44T70J391B-00DU is a reliable, long life film capacitor that is capable of delivering superior performance for critical applications. Its operation is extremely stable, with low distortion and low noise levels, providing superior sound and voltage stability. Additionally, these capacitors have excellent heat dissipation, high frequency response, and low dielectric absorption, making them an excellent choice for demanding industrial environments and applications.

The SFT44T70J391B-00DU is one of the most versatile film capacitors available, and it has a wide range of applications due to its robust construction, durability, and low ESR rating. This film capacitor is ideal for applications in telecommunications, industrial automation, and instrumentation, due to its superior performance and reliability. It is also well-suited for automotive audio applications, due to its low noise level and excellent sound quality characteristics.

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