3M CN3490 6" X 1.25"-25

The 3M CN3490 6" x 1.25"-25 is a Radio Frequency Interference (RFI) and Electromagnetic Interference (EMI) shielding and absorbing material which possess application field and working principle. It is designed for shielding electronic components and assemblies from interference and radiative fields, and provides a combination of EMI and RFI shielding performance.

This particular product is a woven silvered glass/tin alloy cloth laminated with a permanent acrylic pressure sensitive adhesive. It is flexible and lightweight, making it convenient for use in various applications, and suitable for hand and machine application. The laminate also features improved flexibility and crease resistance.

The CN3490 provides 3M™ EMI Shielding and Absorbing Performance and superior adhesion strength, and is suitable for use on flat or curved surfaces. It is easy to install, can be cut to fit irregular shapes and sizes, and resists burning or melting. The product also offers 80 dB shielding effectiveness at 10 GHz, and is designed to shield up to 15 GHz.

The application field of this product includes electronic components, computer cabinets, shielding components, instrumentation, equipment, generators, motors, power electronics, amplifiers, heath care equipment, medical devices, enclosures, and other electrical assemblies. Additionally, it is used in the manufacturing of radios, television receivers, industrial apparatus, telecommunications equipment, and defence systems.

The 3M CN3490 adheres firmly to most metal and non-metal surfaces, and can be installed quickly and easily. It is designed to provide EMI/RFI electromagnetic shielding and absorption of electromagnetic signals. It is optimised to reduce interference from sources as diverse as radio, telephone, microwave transmitters, and video surveillance systems.

The product works by absorbing and shielding electromagnetic interference that would otherwise interfere with the performance of sensitive electrical circuits. The mesh of metal strands laminated to the acrylic glue form a Faraday cage around the object or device to be protected from electromagnetic pulsations. This cage is created by the alternating layers of alternating positive and negative charges, which when combined, neutralises the disruptive electric fields that would otherwise interfere with the item or circuit.

The 3M CN3490 6" x 1.25"-25 is designed for use in a range of applications and industries, and offers superior EMI/RFI shielding performance. It is easy and quick to install, offers strong adhesion, is flexible and lightweight, and is designed to resist burning and melting. It provides a combination of EMI and RFI shielding performance, enhancing the performance of sensitive electronic components and assemblies.