CME375-8-B

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Common Mode Chokes (CMCs) are an important component of electrotechnical products used to filter out unwanted electrical interference or noise in a device. The CME375-8-B is one such type of CMC designed to suppress Common Mode Noise (CMN) in electronic applications. This article will discuss the application field and working principle of the CME375-8-B.

The CME375-8-B is specifically designed for applications requiring both high impedance and high current-handling capability. It is ideal for use in switching mode power supplies (SMPS), automotive and industrial applications, as well as signal integrity applications. It is also suitable for applications involving high-frequency switching signals, which require a high level of suppression of unwanted interference.

The CME375-8-B consists of a single ferrite-core, shielded inductor, and two windings with a filtering capacitor. It is designed to filter out high frequency or common-mode noise by suppressing differential-mode noise. The shielding also ensures that the noise is contained within the device and does not cause further interference. The capacitor, combined with the inductor and windings, forms a low-pass filter, which suppresses common-mode noise and allows only the desired signal to pass.

In operation, the CME375-8-B filters the resulting current to the desired level, eliminating any interference or noise. The amount of current filtered depends on the equivalent series resistance (ESR) of the capacitor and the inductance of the inductor core. The inductor core is specially designed to provide a much higher level of suppression than other types of common mode chokes. This is especially important when dealing with high-frequency or high-power applications such as automotive or industrial use.

In terms of performance, the CME375-8-B can achieve insertion loss of up to 80 dB and offers a frequency range of DC to 10 MHz. The device is also capable of operating over a wide temperature range of -40 to 125 oC. Additionally, the CME375-8-B has a rated current of 15 A and an impedance of 60 ohms, making it an ideal choice for use in a range of different applications.

In summary, the CME375-8-B is an effective, high-performance Common Mode Choke designed for use in SMPS, signal integrity and other types of applications. It is capable of providing high impedance and high current-handling capability, as well as excellent frequency response. The device is also durable, as it is designed to operate in a wide range of temperatures, allowing it to be used in a variety of different environments.

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