3M CN3490 6" X 6"-25

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RFI and EMI - Shielding and Absorbing Materials

3M CN3490 6" X 6"-25 is a special type of shielding and absorbing material that is used to reduce electromagnetic interference (EMI) and radio frequency interference (RFI) from other sources such as signal devices in the surrounding environment. It is made from a combination of aluminum foil and resin-coated freestanding fiber material that is designed to provide shielding against RF and EMI. It has many applications and can be used in a variety of industries, such as the aerospace, automotive, industrial, medical, telecommunications, and consumer electronics fields.

The working principle of the 3M CN3490 6" X 6"-25 is based on its ability to absorb and shield RF and EMI waves at different frequencies. It is designed to provide an electrical barrier that shields against a broad range of frequencies that can range from 10kHz to 30GHz. The specific shielding performance of the material can be tailored to the application by selecting the right thickness of the core material and designing the right geometry of the absorber. The core material forms the bulk of the material and consists of resin-coated freestanding fiber material that can absorb and attenuate RF and EMI waves in different frequencies.

3M CN3490 6" X 6"-25 is also designed to be flexible and easy to use. It can be easily cut and bent to fit the needs of any particular application without interfering with its frequency response. The aluminum foil provides a good electrical shield against EMI and RFI and also provides good mechanical strength to the material. The material can be mounted on a surface by using double-sided tape to ensure good contact with the surrounding environment. It can also be attached to plastic and metal surfaces with screws or rivets, allowing it to be used in a variety of settings. The material is also fire retardant and meets the requirements of UL94 V-0.

3M CN3490 6" X 6"-25 is an ideal solution for a variety of applications that require good RF and EMI shielding. It is easy to install and can provide reliable shielding against RF and EMI signals. It can also be used in other applications such as grounding, impedance matching, and surge protection. The material is available in rolls and sheets, making it a convenient and cost-effective solution for shielding and absorption applications.

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