CMR04F391FPAM

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Mica and PTFE capacitors are used for a variety of marketing roles, ranging from audio applications to hazardous area commercial products. This article examines the application field and working principle of the CMR04F391FPAM model.

Description

The CMR04F391FPAM is a type of mica and PTFE capacitor manufactured by AVX Corporation. It is a molded multilayer capacitor with a perforated top and bottom metalization. The capacitor consists of multiple layers of PTFE and mica material with a silver or an alloy of silver and palladium metallisation sandwiched between them. The capacitor is made from mica with the PTFE insulation layer, giving it the ability to operate in temperatures up to 125℃. The capacitor\'s design has low inductance, making it ideal for use in applications that require high speed and high accuracy.

Application Field

The CMR04F391FPAM mica and PTFE capacitor is ideal for use in a wide variety of applications that need a high level of performance from a capacitor due to its low inductance. These applications include mobile devices, such as cellular phones, personal digital assistants (PDAs), and notebook computers, where space is limited and capacitors must have the ability to respond quickly and accurately to voltage changes. Other applications for the CMR04F391FPAM include the automotive industry, medical devices, TVs and monitors, security systems, and military/aerospace.

Working Principle

The CMR04F391FPAM capacitor uses a combination of mica and PTFE materials as the dielectric, which means that the capacitor can operate in temperatures up to 125℃ without failure. The mica and PTFE layers are then separated by a metallised layer of silver or an alloy of silver and palladium. This layer allows the capacitor to store energy and to direct current through it. When a DC voltage is applied to the capacitor, the charges gather on the plates causing the current to increase. The current then passes through the metallised layer and is stored on the other side. When the voltage is removed, the capacitance gradually decreases, until the capacitor reaches a steady state. This steady state is called the capacitive reactance and is a measure of the capacitance of the capacitor.

Conclusion

The CMR04F391FPAM mica and PTFE capacitor is a reliable and effective choice for a variety of applications where performance and reliability are of the utmost importance. Its low inductance design ensures that it is suitable for high speed and high accuracy applications, while its mica and PTFE construction makes it able to withstand temperatures of up to 125℃, making it suitable for use in hazardous area applications. Its application field is broad and includes cell phones, medical devices, automotive industry, TVs and monitors, security systems and military/aerospace. The working principle of the CMR04F391FPAM is one of simple storage and conduction of current, with its metallised layer acting as a barrier between the two media.

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