4118R-601-101/201L

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EMI/RFI Filters (LC, RC Networks) are used in a variety of applications and the 4118R-601-101/201L is no exception. In this article, we will discuss the application field and working principle of the 4118R-601-101/201L.

Applications for the 4118R-601-101/201L cover a wide range of different areas. The filter is capable of filtering radio frequency interference (RFI) and man-made noise in the fields of appliance, consumer products, computer, communication, medical, instrument, and industrial systems.

The 4118R-601-101/201L is designed to provide excellent electromagnetic interference (EMI) and radio frequency interference (RFI) rejection. It can be used to protect sensitive electronic circuits from electromagnetic and electrical interference. The filter is composed of two parallel LC circuits. The common mode inductance of the two circuits is chosen to have the same RMS impedance at the frequencies to be filtered, while the differential mode inductance has a larger RMS impedance.

The two parallel LC circuits are connected in series to form a complex filter. The two circuits act as a low-pass filter with a roll-off frequency of about 5Mhz. The filter works by allowing only signal frequencies below 5Mhz to pass through the filter. All frequencies above 5Mhz will be attenuated and filtered out.

The working principle of the 4118R-601-101/201L is based on two parallel LC circuits connected in series. The first LC circuit is a common mode circuit and the second LC circuit is a differential mode circuit. The common mode inductance of the two circuits is chosen to have the same RMS impedance at the frequencies to be filtered. The common mode inductance will reject higher frequency and pass lower frequency signals, while the differential mode inductance will provide additional rejection of EMI/RFI. The other elements in the filter are capacitors and resistors, which are used to provide additional attenuation at specific frequencies.

The filter also includes several bypass capacitors. These capacitors act as high pass filters, allowing only high frequency signals to pass through while rejecting lower frequency signals. Bypass capacitors are also used to reduce the impedance of the filter at higher frequencies, improving its performance.

In conclusion, the 4118R-601-101/201L is an effective EMI/RFI filter designed to protect sensitive electronic circuits from electromagnetic and electrical interference. It is composed of two parallel LC circuits and several bypass capacitors. The filter works by allowing only signal frequencies below 5Mhz to pass through, while all frequencies above 5Mhz will be attenuated and filtered out. The filter also includes several bypass capacitors, which act as high pass filters, allowing only high frequency signals to pass through while rejecting lower frequency signals.

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