NFA21SL287V1A45L

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Electromagnetic interference (EMI) is a type of physical interference created by electrical signals. It often occurs when signals in one circuit are unintentionally received by another circuit, disrupting the normal operation of the latter. Radio-frequency interference (RFI) is a form of EMI that usually results from sources that operate at high levels of power and operate at radio frequencies. In order to protect circuits from the damage caused by EMI and RFI, EMI/RFI filters are used.

One type of EMI/RFI filter is the LC (inductor-capacitor) network filter. This filter consists of two components – an inductor and a capacitor – that are connected in series or in parallel. When connected in series, the inductor-capacitor network acts like a low pass filter, attenuating high frequency signals while allowing low frequency signals to pass through. When connected in parallel, the LC network behaves like a high pass filter, passing high-frequency signals while attenuating low-frequency signals.

The NFA21SL287V1A45L is an EMI/RFI filter based on an LC network and is designed to filter out high-frequency disturbances while bypassing low-frequency signals. It is used mainly for applications where low-frequency signals and high-frequency noise need to be separated. Its small size and wide operating range make it particularly useful in applications such as automotive, consumer electronics, industrial robotics, and medical imaging.

The NFA21SL287V1A45L filter works by having two inductors and a capacitor connected in series. The inductors, L1 and L2, can be made from various materials, such as ferrite, iron powder, or bobbins. This helps to reduce the filter’s size while allowing it to have a wide operating range. The capacitor, C1, serves to block high-frequency noise while allowing low-frequency signals to pass through.

The NFA21SL287V1A45L filter is designed to be used in applications with a wide range of frequencies, from DC up to 18GHz. It can be used for both single-ended and differential-mode operations, and its small size makes it suitable for use in tight spaces. The filter has a low insertion loss and a high rejection rate, making it one of the most effective EMI/RFI filters on the market.

In summary, the NFA21SL287V1A45L filter is an LC network EMI/RFI filter designed for use in a wide range of applications. Its small size and wide operating range make it ideal for applications such as automotive, consumer electronics, industrial robotics, and medical imaging. It has a low insertion loss and a high rejection rate, making it an effective solution for filtering out unwanted high-frequency noise while allowing low-frequency signals to pass through.

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