Company news about Is the mutual inductance value of the common-mode inductor always better when it is larger?

Is the mutual inductance value of the common-mode inductor always better when it is larger?

2026-01-28

Common-mode inductors are electrical inductor devices used to suppress electromagnetic interference (EMI). Their main function is to prevent common-mode noise signals from entering the system. The magnitude of the inductance of a common-mode inductor is not necessarily the larger the better; instead, it needs to be selected based on the specific application scenario and system requirements.
If the inductance of the common-mode inductor is too small, it may not be able to effectively suppress the common-mode noise signal, thereby affecting the performance and stability of the system. However, if the inductance of the common-mode inductor is too large, it may cause the frequency response of the circuit to deteriorate, thereby affecting the transmission performance of the system. Moreover, an excessively large common-mode inductor will also increase the cost and volume of the system.
Therefore, when selecting common-mode inductors, it is necessary to determine the appropriate inductance based on the specific application scenario and system requirements. Generally speaking, the suitable common-mode inductors can be selected based on factors such as the system's operating frequency, noise environment, output load, etc. At the same time, the quality factor, DC resistance and other parameters of the common-mode inductors also need to be considered to ensure their performance and stability in the system.

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