PEMI6QFN/WG,132 Filters

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The EMI/RFI filters are used to reduce and stop conducted and radiated electromagnetic interference which can be the result of EMI from outside sources, as well as "noise" and harmonic distortion from inside the system producing unnecessary emissions. This aim can be achieved by installing LC, RC networks, such as the PEMI6QFN/WG,132.

PEMI6QFN/WG,132 Application Field

The PEMI6QFN/WG,132 is used for preventing ESD (electrostatic discharge) and EFT (electrical fast transition), as well as unwanted high frequency conducted noise to enter the system and for further preventing any emissions from radiating outside the system. This makes it suitable for various applications where safety, accuracy and stability are of great importance, such as medical and industrial equipment, computers, consumer goods, aeronautical and military equipment, theatrical and communications equipment.

PEMI6QFN/WG, 132 Working Principle

The PEMI6QFN/WG,132 is a combination filter that includes passive elements as inductors and capacitors to limit the current. It also includes a gas discharge tube in order to clamp the voltage. It is suitable for both Common Mode and Differential Mode noise.

The inductors have the capability to limit the current as they act like a narrow “pipe”, allowing a certain amount of “flow”, but restricting larger amounts of “flow”. The capacitors, on the other hand, limit the voltage as they act like a wide open “pipe”, allowing large “flow”, but naturally unable to maintain steady amounts of current. The Gas Discharge Tube, which is connected in parallel with the capacitors, allows for voltage clamping.

The operation of the combined filter can be described in this way: the input signal is first filtered by the inductors and capacitors. The signal then passes through the gas discharge tube, which acts as a voltage clamp. It reduces the voltage of the signal by “clamping” or limiting the voltage of the signal so that it is not affected by any external voltage changes. The combination of the filter and the clamp allows for the most efficient noise reduction.

Conclusion

The PEMI6QFN/WG,132 is a combination EMI/RFI filter with passive elements such as inductors and capacitors, as well as a gas discharge tube, that is designed to reduce and stop conducted and radiated noise in various applications where safety, accuracy and stability are of utmost importance. It is suitable for both Common Mode and Differential Mode operation. With the combination of the filter and the gas discharge tube, the PEMI6QFN/WG,132 offers maximum efficiency and noise reduction.

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