3M CN3490 5" X 1.25"-25

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RF and EMI shielding products are used to reduce the electromagnetic radiation emitted from electronic components or machinery and protect against a wide variety of electrical interference. 3M CN3490 is a type of shielding product designed to provide excellent absorption of both static and dynamic signals. It is capable of absorbing a wide range of frequencies and offers excellent protection against both low-frequency and high-frequency interference.

3M CN3490 is a five inch by one and a quarter inch high frequency absorber with an operating frequency range of 0.1 GHz to 2.2 GHz. It is made of a special silver-filled polyurethane foam material with an open cell structure that allows for flexibility and improved performance. This unique material is highly effective at absorbing electromagnetic energy, providing superior shielding properties. In addition, the silver-filled polyurethane foam structure is very light in weight, allowing for easy and convenient installation.

The application field of 3M CN3490 encompasses a wide range of industrial, military and residential applications. It is especially useful for protecting devices from EMI sources such as cell phones, power lines, radio and TV signals, power supplies, and other high power systems. In addition, it is useful for protecting sensitive medical equipment from electromagnetic interference and reducing the risk of harm to users. It is also suitable for use in military aircraft, helicopters, marine vessels and land vehicles, and can be used to protect communication and navigation systems from EMI.

The working principle of 3M CN3490 is based on its design to absorb and dissipate electromagnetic waves. The silver-filled material absorbs the energy by transforming it into thermal energy. This thermal energy is then dispersed to the surrounding environment, reducing the electromagnetic wave emission from the source. In addition, the special construction of the material allows it to provide consistent absorptive properties over a wide frequency range. This ensures that the wave energy is dispersed in a uniform manner, which reduces the risk of interference and prevents potential damage.

3M CN3490 provides superior absorption of RF and EMI signals, making it ideal for a variety of applications. It is lightweight and easy to install, making it convenient to use in many different applications. Its ability to absorb a wide range of frequencies and its unique construction make it highly effective at protecting sensitive electronic components and devices from harmful electromagnetic waves.

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