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What is EMI Shielding?

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What is EMI Shielding?

You may be asking what exactly is EMI shielding and why is it important? Well, EMI Shielding in electronic devices and equipment is the use of materials to aid in protecting signals from being disrupted by external electromagnetic signals, as well as preventing component-generated signals from interfering with surrounding pieces.

Why is EMI Shielding Important?

Electromagnetic interference (EMI) can disrupt electronic devices, equipment, and systems that are used in critical applications around the world and across many industries. Some examples include medical, military, and transit are some industries as well as common things down to the computers we use on a daily basis. 

What causes electromagnetic interference varies and can include both man-made and natural sources. The results can range from temporary disturbances and data losses, all the way to complete system failure and even loss of life in more vital applications.

So what causes EMI? It can be caused in two ways. It can be caused by direct physical contact with a conductor, called conducted EMI, or by induction (without physical contact), called radiated EMI. While nearly every electrical device creates emissions that can cause EMI, (i.e. Bluetooth devices, cellphones, electronic motors) electric power cords and high-speed cabling are the most common sources of radiated EMI.

Seal & Design is a provider of electrically and thermally conductive materials which offer a wide range of EMI shielding to global electronics companies. Typical EMI shielding gasket materials include ferrites, silicone, fluorosilicone, and EPDM. 

We a large range of Halogen Free EMI (Electromagnetic Interference) and RFI (Radio Frequency Interference) shielding products. EMI is any frequency of electrical noise and RFI is a subgroup within EMI frequencies. Our products range from Fabric Over Foam (equivalent to discontinued chromerics 5000), conductive foams and tapes. Contact Us for more information and a quote.