3M CN3490 CIRCLE-0.813"-250

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Shielding and Absorbing Materials are essential components in the manufacture of electronic components and products. RFI (Radio Frequency Interference) and EMI (electromagnetic interference) Shielding and Absorbing Materials are designed to protect electronic products from the interference of these high frequency signals.

3M CN3490 CIRCLE-0.813"-250 is a type of RF/EMI Shielding and Absorbing Materials. It is designed to protect electronic products from interference by shielding and absorbing harmful high frequency signals. It can also be used as an anti-static and sound insulation layer.

3M CN3490 CIRCLE-0.813"-250 consists of an outer layer of EMI-shielding Mylar film and an inner sheet of conductive elastomer. The outer layer is coated with aluminum or copper to provide electromagnetic screening and RF shielding. The inner sheet is made of flexible conductive elastomer designed to absorb or shield EMI. Combined with an adhesive backing or film, the 3M CN3490 CIRCLE-0.813"-250 creates a strong bond to the product surface for maximum sealing and conductive protection. The adhesive layers ensure a good electrical contact between the foil and the product or PCB.

3M CN3490 CIRCLE-0.813"-250 has applications in a wide range of industries, such as automotive, aerospace, communications, computer and medical industries. It can be used in the manufacture of electronic components and products, including backplanes, circuit boards, motherboards, microprocessors, memory chips, and LED lighting.

The working principle of 3M CN3490 CIRCLE-0.813"-250 is to shield the product from EMI emissions by absorbing energy from the electromagnetic wave. The shielding material absorbs the energy from the wave, preventing it from entering the product and thus minimizing the interference. The adhesive layer ensures a strong electrical contact between the product and the shielding material, allowing it to absorb and dissipate the electromagnetic waves more effectively. The conductive elastomer layer absorbs some of the energy from the wave, dispersing the remaining energy.

Overall, 3M CN3490 CIRCLE-0.813"-250 is a reliable and effective shielding and absorbing material that can be used to protect electronic products from EMI and RFI emissions. It is easy to apply, provides good electrical contact and ensures maximum sealing. Its strong adhesive layer and conductive elastomer layer makes it an excellent choice for a wide range of applications.

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