CM6205

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EMI/RFI filters are integral components in all electrical systems due to the susceptibility of electrical signals to electromagnetic interference (EMI). The CM6205 is a surface-mount EMI/RFI filter designed for use in applications with size and noise-interference constraints. This article examines the application field of the CM6205 and its working principle.

Application Field:

The CM6205 EMI/RFI filter is designed for use in applications requiring an extremely low profile package, high rejection levels, and stable recognition performance over time. This filter is suitable for a wide variety of applications such as communication systems, automotive equipment, consumer electronics, medical equipment, and other signal pathways and devices exhibiting random and/or intermittent EMI. The extremely low profile design of the CM6205 allows it to easily fit into many small form factor applications, while maintaining high EMI rejection performance.

Working Principle:

The CM6205 EMI/RFI filter works by separating EMI and RFI from desired signals, thereby preventing them from being conducted to the protected circuit. The filter consists of a RC-LC network with two capacitors and a series inductor configured in shunt to ground. The capacitor-inductor (CL) combination is designed to attract a wide range of frequencies between the two capacitances. The filter is designed to have a very high Common Mode rejection ratio (CR) of 60dB minimum, over a broad frequency range. As an added advantage, the characteristic impedance of the CM6205 is very low, avoiding additional signal degradation.

In addition, the CM6205 filter utilizes a unique structure, allowing it to be used in high humidity and temperature environments without compromising performance. The filter is designed with a special dielectric insulating material to ensure that it is not affected by changes in the environment. Furthermore, the CM6205 filter is designed to work in both AC and DC power circuits, providing flexibility for a wide variety of applications.

The CM6205 EMI/RFI filter has been designed to provide excellent performance when used in challenging applications where size and noise interference is a concern. It is suitable for many applications which require a low profile, high rejection rate, and stable recognition performance over time. The filter utilizes a RC-LC network which is designed to attract a wide range of frequencies between the two capacitances, providing excellent EMI rejection ratios with a low characteristic impedance. Additionally, its robust design allows it to work in many extreme environmental conditions.

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