CMR05F221JODM

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Mica and PTFE capacitors are widely used in a variety of electronic applications due to their superior electrical characteristics and physical properties. CMR05F221JODM is a multi-layer mica and polytetrafluoroethylene (PTFE) capacitor with superior characteristic performance, high reliability and stability. The product is suitable for use in low and high temperature, high humidity, high vibration and shock-resistant applications.

Applications

CMR05F221JODM is a general purpose mica and PTFE capacitor designed for high-reliability and high-stability applications. The product can be used in a wide range of applications where mica and polytetrafluoroethylene are an effective choice. Common applications include power converters, frequency dividers, radio and TV sets, transmitters, signal processing, power supplies, high voltage rectifiers, television receivers, satellites, computers, digital cameras and other applications requiring high reliability and stability.

Working Principle

Mica and PTFE capacitors consist of two or more layers of interleaved mica and PTFE sheets, which are oppositely charged. When a current passes through the capacitor, an electrostatic field is created between the layers, storing energy in the form of an electrostatic field. This energy is released when the current is removed from the capacitor, and a voltage is then applied across the capacitor.

The working principle of mica and PTFE capacitors can be split into two parts. The first part is the electrostatic part. When a constant voltage is applied to the capacitor, an electric field is formed in the material between the PTFE and the mica sheets, giving an electrical field between the two layers which can be calculated from basic electrostatics. This electrical field will result in an electrical force between the two sheets, which is used to establish a stable electrical connection. The electrical field between the PTFE and mica sheets can be altered by adjusting the voltage applied to the capacitor or by adjusting the capacitor’s capacitance.

The second part of the working principle of mica and PTFE capacitors is the dielectric part. The material between the PTFE and the mica sheets acts as a dielectric and determines the storage of energy between the two layers. The dielectric material slows down the energy dissipation inside the capacitor, controlling the output voltage and power delivery. The capacitance of the capacitor can also be increased or decreased by selecting the right dielectric material.

The working principle of mica and PTFE capacitors makes them suitable for a variety of applications. The high storage capacity and the low dissipation makes them ideal for use in power supplies, voltage multipliers, power converters, high-power rectifiers, frequency dividers, oscillators, and signal processors.

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