NFE31PT152Z1E9L Filters

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EMI/RFI Filters (LC, RC Networks)

EMI/RFI filters are generally composed of inductors and capacitors in combination. The NFE31PT152Z1E9L EMI/RFI filter is a combination of a high-performance ferrite bead and resistor, and is designed to reduce interference or suppress radio frequency signals (RF noise) from electronic device products. The NFE31PT152Z1E9L EMI/RFI filter offers ultra-low impedance across frequency bands from 150kHz - 30MHz and helps reduce high frequency noise. It is designed for use in applications where noise is present and can be easily mounted with headers, terminals, and other various connection structures.

Application Field

The NFE31PT152Z1E9L EMI/RFI filter is ideal for demanding EMI/RFI filtering applications, such as control systems, telecommunications, electronic measurement equipment and communication equipment, automotive electronics, industrial control systems, and other high-performance circuit designs where a high level of interference suppression is required. The EMI/RFI filter is also suitable for reducing EMI flux radiation, which is mainly generated by high-power components such as motors or switches, to meet the electromagnetic compatibility (EMC) requirements of the respective products.

Working Principle

The NFE31PT152Z1E9L EMI/RFI filter works by insertion loss. It is an effective technique for reducing unwanted RFI and EMI generated from within an electronic system. The conductive components form a filter network that attenuates certain frequencies of unwanted signals. Insertion loss occurs when the impedance of the filter is greater than the impedance of the source and load. This difference causes some of the signal to be absorbed by the filter as its energy is expended overcoming the increased resistance of the filter.

The ferrite bead acts as an inductor, blocking the flow of current by providing resistance to high frequency signals and absorbing some of the energy. The resistor within the EMI/RFI filter reduces the signal level and helps to reduce voltage due to its dependence on current. Together, these two components provide a highly effective combination for suppressing radio frequency interference.

Conclusion

The NFE31PT152Z1E9L EMI/RFI filter is an effective and reliable EMI/RFI filter for applications that require high-performance suppression of radio frequency interference. Its combination of a ferrite bead and resistor provides excellent insertion loss for frequencies between 150kHz - 30MHz and helps to reduce high frequency noise. It also provides excellent accuracy and low insertion loss for EMI/RFI suppression in demanding electronic systems.

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