CD42FD363GO3F

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Mica and PTFE Capacitors

CD42FD363GO3F is a type of capacitor that is a combination of both mica and polytetrafluoroethylene, otherwise known as PTFE. Mica is traditionally used in capacitors due to its high dielectric strength, and PTFE is added to the construction to improve electrical properties. As a three layer capacitor, CD42FD363GO3F combines a mica dielectric, a PTFE layer that acts as a spacer and contact closure, and a metalized polyethylene layer that serves as the outer layer. When placed within any type of electromagnetic field, these capacitors prove to be extremely effective.

Application Field

CD42FD363GO3F capacitors have numerous applications. One key use is in the aerospace industry. These capacitors are used to filter high frequency signals in order to prevent interference and maintain accuracy. In the automotive industry, CD42FD363GO3F capacitors can be used as stabilizers for on-board electrical systems. Additionally, they can be used in the medical industry for applications such as ECG machine monitoring or imaging circuit interference. Finally, CD42FD363GO3F capacitors can be used in telecommunication equipment for signal attenuation of certain frequencies.

Working Principle

The working principle of CD42FD363GO3F capacitors is essentially identical to any other electrical capacitor. An important factor in the efficacy of these components is the low dissipation factor. The electrical field within the dielectric causes an additional current, and this current is the dissipation factor. The combination of mica and PTFE in the construction of CD42FD363GO3F capacitors ensures that the dissipation factor remains low. Additionally, the use of PTFE also improves the dielectric strength and insulation resistance of the overall component.

In a two-terminal capacitor configuration, CD42FD363GO3F capacitors operate by storing charge within the conductor, also known as the plates. As a three layer capacitor, CD42FD363GO3F electrodes consist of two thin metalized electrodes — the inner electrodes provide the various electrical connections — separated by the mica/PTFE spacer layer, and the outside electrodes are connected to the metalized polyethylene layer as a contact. Thus, whenever a DC voltage applied across the capacitor, a displacement current will flow between the two plates.

Conclusion

CD42FD363GO3F capacitors are a great solution for numerous applications. These three-layer capacitors are able to dissipate a smaller amount of heat and offer excellent EMI performance when compared to similar components. By combining the traditional mica dielectric with more modern PTFE layers, the CD42FD363GO3F capacitors can operate within multiple applications with high levels of efficacy.

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