CM1408-08DE

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The CM1408-08DE EMI/RFI Filter is an advanced near field high-performance common-mode filter. It is specifically designed to provide high suppression of conducted interference in both directions and for providing a high power common-mode noise cancellation. This noise is typically caused by power supply and digital switching noise and can be very difficult to suppress.

The CM1408-08DE is a three-element design which incorporates two near-field inductors and two shielding capacitors. The high performance is achieved through the shielding capacitors which provide low pass filtering and through the two near-field inductors that provide high pass filtering. Together, they enable the filter to provide excellent common-mode suppression, as well as promote differential-mode attenuation.

Applications for the CM1408-08DE include power converters, telecom systems, high frequency data systems/circuits, and other electronic applications. It is suitable for frequencies from a few hundred kilohertz up to several gigahertz in a variety of industries such as medical, automotive, and industrial. This filter is ideal for equipment in challenging EMC environments and for applications where high common-mode suppression is desired.

The CM1408-08DE has a strong working principle which centers around preventing noise from reaching a PCB’s sensitive nodes. This is achieved by creating a Faraday cage effect with the shielded inductors. The shielding capacitors and the near-field inductors will absorb and isolate any conducted noises from the power supply, allowing the PCB to operate within its noise free design constraints.

The filter also has benefits in terms of weight and space savings. It is less bulky and lighter than a traditional filter, making it easier to install and more efficient to use. This is because it can be implemented directly into the PCB design, whereas with a traditional filter, additional hardware would be required.

In addition, the CM1408-08DE has good EMI/RFI protection on both sides of the filter. As a result, it is able to provide excellent common mode suppression, as well as differential-mode attenuation. This demonstrates that the filter is capable of suppressing a wide variety of interference frequencies, from low frequency (e.g. industrial noise) to higher frequency (e.g. PC board level).

Finally, with regards to cost, the CM1408-08DE is an affordable solution when compared to traditional EMI/RFI filters. It is relatively inexpensive and provides good performance for its cost. This makes the filter an attractive option for those looking for a cost effective solution for their EMI/RFI needs.

Overall, the CM1408-08DE is an outstanding EMI/RFI filter that provides excellent common-mode suppression, differential-mode attenuation, and cost efficiency. It is suitable for a wide variety of applications and represents a good balance between performance and cost. As such, it is a great choice for any project that requires an effective and affordable EMI/RFI filter.

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