ECQ-E2393KFB

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Film capacitors are essential components in many electronic and electrical applications, providing the "stored energy" required for most digital applications. This article examines ECQ-E2393KFB film capacitors to provide deeper insight into their application field and working principle.

ECQ-E2393KFB film capacitors, also known as polyethylene naphthalate (PEN) film capacitors, are low-ESL plastic film-dielectric capacitors which are popularly used in various electronic and electrical applications due to their superior performance. These capacitors are made of polyethylene terephthalate (PET), polybutylene terephthalate (PBT) and PEN, the polyester film being covered with a layer of aluminium to provide electrical conduction. They are known for their low dissipation factor, low leakage current and high stability.

ECQ-E2393KFB film capacitors are mainly used in electronic circuits to store electrical energy. In these electronic circuits, the capacitors act as a kind of "flywheel" for electrical energy, allowing for the control and easier release of stored energy when needed.

These capacitors have a wide range of application fields. They can be used in AC/DC power supplies, digital signal processing, automotive electronics, audio and video systems and telecommunication equipment. They are common devices in musical instruments, loudspeakers and computer sound cards too.

When the ECQ-E2393KFB film capacitors are subjected to an AC voltage, the electric field created between the electrodes produces a polarization current – a current that is responsible for moving the charged particles and ions in the material and for directly replenishing the internal polarization of the dielectric material. This electric field interacts with the electric field of the external applied voltage, leading to an oscillation of the internal electric field and a consequent variation of the capacitance. This phenomenon is known as electrical polarization and it is the major principle on which the working of ECQ-E2393KFB film capacitors is based.

To reduce losses in the circuits, the ECQ-E2393KFB capacitors are designed using materials that have specific dielectric constants and permittivity values. These values determine the capacitance and voltage ratings of the capacitors and affect their performance. High dielectric constant materials (such as Polypropylene, PEN and Ceramics) are generally used to create low loss capacitors with higher capacitance per volume. On the other hand, materials with high permittivities (such as Polyethelene, Polyamide and Nylon) are used to increase the total capacitance of the capacitors.

EQC-E2393KFB film capacitors offer a unique solution to the capacitance needs of a variety of applications. With their low dissipation factor, low leakage current and high stability, these capacitors are suitable for a wide range of applications. Moreover, their ability to store electrical energy makes them particularly useful for digital applications.

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