CD18FD472JO3F

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Mica and PTFE Capacitors

The CD18FD472JO3F capacitor is a type of mica and PTFE capacitor. This type of capacitor is comprised of a ceramic or mica dielectric (an electrical insulator that can be polarized by an electric field to store electrical charge) with a higher resistivity than other capacitors, a thin-film layer made of Perfluoroalkoxy (PTFE) and a precision layer of capacitance foil. This capacitor is most often used in high frequency applications, as mica has superior stability over temperature and frequency and PTFE allows for higher voltage ratings.

Application Field

The higher stability and superior insulation of mica and PTFE capacitors makes the CD18FD472JO3F particularly suitable for several types of circuits, including high-voltage DC and AC power electronics, high-frequency DC/AC inverters, and RF variable frequency applications. The higher temperature rating of mica and PTFE capacitors also make them useful in automotive, industrial, and motor drive circuits. This type of capacitor is also frequently used in wideband radio equipment, alignment equipment, and cell phone base stations.

Working Principle

The workings of the CD18FD472JO3F mica and PTFE capacitor begin with the mica dielectric layer which stores electrical energy between the two metallic plates forming an electric field. The thin-film layer of PTFE deposited between the plates allows for more leakage current and higher voltage capabilities than that of other dielectric materials. This also helps protect the ceramic dielectric from temperature expansion and high voltage breakdowns. Finally, the capacitance foil layer, which consists of an aluminum or copper post interconnected by thin metal leads on the underside of the capacitor, helps mitigate the effect of minor voltage fluctuations. This allows the capacitor to maintain its rating when subject to varying frequencies and voltage.

To sum up, CD18FD472JO3F mica and PTFE capacitors offer a high degree of stability and safe operating conditions in various electronic applications, making them suitable for a wide range of applications. Their higher temperature resistance allows them to be used in high-temperature environments, and the thin-film layer of PTFE increases their voltage ratings and leakage current capabilities, making them ideal for use in high-frequency and variable-frequency circuits.

The specific data is subject to PDF, and the above content is for reference