3M CN4490 7" X 7.25"-25

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RFI and EMI - Shielding and Absorbing Materials are becoming increasingly important in the modern technology world. With the need to protect sensitive electronic equipment from harmful radiation and interference, the 3M CN4490 7" X 7.25"-25 application field and working principle is an important focusing topic for the industry. This article will discuss the 3M CN4490 application field, its working principles and how it can effectively protect electronic equipment from interference.

The 3M CN4490 is a special purpose design shielding material which is ideal for applications where conventional shielding is insufficient. The product is mainly used to shield electronic and transmission lines, RF and microwave components, communications systems and medical equipment from the external environment.It contains a specialized array of precious metal particles, which are embedded into a polymer film. This creates a barrier which effectively limits the amount of external interference.

The working principle of the 3M CN4490 is to provide the most effective, uniform and consistent shielding. This is achieved through the precise placement of the precious metal particles in the polymer film which absorbs any interference from the outside. The shielding effect is maximized as the particles are designed to be highly conductive, dissipating the interference and preventing it from reaching the electronic equipment.The product is designed in such a way that it works even when the contact area between the metal particles and the polymer film is small. This increases the efficiency as it prevents the interference from escaping.

Apart from shielding, the 3M CN4490 also provides some additional benefits. It can be used as a thermal shield as it is able to provide heat insulation for electronic equipment and maintain consistent temperatures. The material is also highly flame retardant and has a UL 94 V-0 rating, making it ideal for high temperature use. Finally, the product has a good self-adhesive backing which makes it easy to install in areas where traditional shielding material would be difficult to install.

Overall, the 3M CN4490 is a versatile and effective shielding material which can be used in a variety of applications. It can be used to effectively protect sensitive electronic equipment from interference and maintain consistent temperatures. It is easy to install, flame retardant and cost effective. With its many benefits, it is no wonder it is becoming an increasingly popular choice for shielding and absorption materials in the modern technology world.

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