3M CN3490 3" X 4"-25

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Introduction

3M CN3490 3" X 4"-25 is a type of shielding and absorbing materials engineered by 3M. It is designed to provide the highest level of RF and electromagnetic interference (RFI and EMI) protection possible and is used by various industries for a variety of purposes. This article will discuss the application field and working principle of the 3M CN3490 3" x 4"-25 product.

Application Field of 3M CN3490 3" x 4"-25

The 3M CN3490 3" x 4"-25 is a shield and absorber designed to provide maximum RF and EMI protection. The material is commonly used in the aerospace, defense, and telecommunications industries, as well as in medical and commercial applications. It is also used in the automotive, medical, and electronics industries to help protect sensitive circuits and components.The shielding material can be easily applied to various surfaces, including glass, metal, plastic, and wood. It is resistant to abrasion, scratching, and chemicals, and can be used in a wide range of temperatures, from -30 to 250 degrees Fahrenheit. The versatile material is also designed to minimize any electrical interference from passing through the material, making it ideal for applications that require high levels of RF and EMI protection.

Working Principle of 3M CN3490 3" x 4"-25

The 3M CN3490 3" x 4"-25 shielding and absorbing material is designed to attenuate RF and EMI signals and reduce the overall interference they cause. The material is composed of a combination of three layers, including a conductive copper layer, a non-conductive foam layer, and a conductive copper foil layer. It is designed to create a strong Faraday cage effect, allowing any RF or EMI signals that enter it to be diverted away from sensitive circuits and components, effectively shielding them from interference.The copper layer and the copper foil layer both act as conductive antennas, allowing for the absorption of RF and EMI signals through the material. The non-conductive foam layer helps to reduce any noise that the copper layers may create, as well as providing extra insulation and cushioning. The combination of the layers provides a high level of RFI and EMI protection, ensuring that sensitive components and circuits are well-protected from any unwanted interference.

Conclusion

The 3M CN3490 3" x 4"-25 shielding and absorbing material combines three layers to provide maximum RF and EMI protection. It is commonly used in a variety of industries, including aerospace, defense, telecommunications, medical, automotive, and electronics. The material is designed to create a Faraday cage effect, allowing for the absorption of RF and EMI signals and the protection of sensitive circuits and components from interference.

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