PEMI8QFN/RW,132

EMI/RFI Filters (LC, RC Networks)

The PEMI8QFN/RW,132 is a ElectroMagnetic Interference and Radio Frequency Interference (EMI/RFI) filter. Filters are used to suppress or limit the amount of EMI and RFI noise that can affect electrical and electronic equipment, causing interference on signal lines. Filters are often required to protect sensitive equipment from noise produced in an environment based on government regulations.

Application Field

The PEMI8QFN/RW,132 EMI/RFI filter is applicable to the following areas:

• Industrial signal processing systems
• Computer controlled systems
• Telecommunication systems facsimile, network switch, and instrumentation applications
• Unmanned process control applications
• HVAC systems
• Vehicle networks

Working Principle

The basic principle of an EMI/RFI filter is the use of capacitor and inductor elements, each of which is able to effectively trap those frequencies of interference which are identified as EMI or RFI. This trap action forms an impedance to noise signals over certain frequency ranges, while providing very little impedance to the desired signal. The capacitor elements are used to reduce high-frequency noise, while the inductor elements are tuned to reduce low-frequency noise.

The filter can be configured to accommodate different frequencies, depending on the needs of the application. For example, when a filter is placed on a power line, it will be tuned to block interference that originates above the frequency of the power signal. This blocking action will reduce the amount of noise present on the signal line, providing improved signal clarity.

The combination of capacitor and inductor elements within the EMI/RFI filter allows it to be tuned to provide effective suppression of both EMI and RFI noise. Also, the filter can be designed to provide a high degree of protection against surges and other forms of transient interference.

Conclusion

The PEMI8QFN/RW,132 EMI/RFI filter is an effective way to protect sensitive electronics from interfering electromagnetic and radiofrequency noise. It is well suited for use in industrial signal processing systems, computer-controlled systems, telecommunication systems, HVAC systems, and vehicle networks. The filter consists of capacitor and inductor elements, which can be tuned to provide effective suppression of both EMI and RFI noise. In addition, the filter can also be designed to provide a high degree of protection against surges and other forms of transient interference.