CDV30FK181JO3

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Mica and PTFE Capacitors

CDV30FK181JO3 belongs to the family of mica and PTFE capacitors which are also known as polytetrafluoroethylene film capacitors or polyfilm capacitors. These capacitors are noted for their small size, long life, and ability to tolerate high temperatures. They are used in a range of applications, such as in computer technology, avionics, automotive and industrial electronics, and telecommunications.

Application Field

Mica and PTFE capacitors are used in many different applications such as communication, audio, lighting, automotive, industrial, and medical systems. Most importantly, they are used in radio frequency (RF) applications, where their excellent electrical properties make them ideal for microwave circuits. The CDV30FK181JO3 capacitor can be used in high frequency applications up to 400MHz.

In industrial applications, these capacitors are ideal for high-power AC control circuits by providing the necessary surge protection. In medical electronics, they can be used for decoupling, signal conditioning, and filtering circuits due to their low resistive and self-resonant frequency characteristics.

In automotive electronics, they are often used in automotive ignition systems as well as in power supply applications. They are also commonly used in various audio and video electronics, power supplies and digital control systems.

Working Principle

A mica and PTFE capacitor works on the principle of an electrostatic field, whereby the charge carriers (electrons) are forced to move from one plate to another, when a potential difference is applied between them. This movement of electrons creates an electric field that is used to store energy. In mica and PTFE capacitors, the electric field is isolated from its environment by a polymer layer (PTFE) which acts as the dielectric material.

The CDV30FK181JO3 capacitor is constructed of mica wafers that are evenly spaced and held in place by a burnable paper or epoxy plate. The burnable plate is pierced with an annular slot to allow for voltage access. The electrodes are all arranged in one plane and the polarity is marked on the component. The component is then impregnated with PTFE resin for insulation and additional stability.

The PTFE resin used in the construction of mica and PTFE capacitors offers exceptional performance characteristics such as high dielectric strength, low dissipation factor, shielded construction, and high temperature tolerance. These characteristics make it an ideal choice for many types of applications in the fields of communication, automotive, industrial, and medical electronics.

The CDV30FK181JO3 capacitor has a wide range of temperature characteristics, ranging from -55°C to +125°C, which makes it well suited for use in demanding environmental conditions. It is also a highly reliable component, with an expected lifetime of more than 200,000 hours at full rated temperature.

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