EMI Shielding Fundamentals
Electromagnetic interference, otherwise know as EMI, is an inadvertent, undesired electronic signal, or signals, radiating from an electronic device. These emissions may manifest themselves as harmless, annoying static on your radio, or possibly as a much more serious interference, such as with an aircraft or in military equipment. Typically most electronics are enclosed in a metal housing, such as computers, where the metal housing acts as the primary shield. However, even the smallest seam or opening in the enclosure may allow for the escape or entry of EMI. That’s where our electro magnetic shielding products come in. Our range of products - including EMI gaskets, and conductive foam and fabrics - fill the gaps and holes in electronic enclosures essentially making the enclosure a complete, seamless shield, thereby containing or blocking the EMI.
One of our first product lines, that continues to remain a significant focus of our production, is our "fabric-over-foam" product line. Fabric-over-foam EMI gaskets consist of an electrically conductive fabric wrapped around and bonded to a foam core. These types of EMI gaskets are available as both continuous profile gaskets and I/O backplane gaskets. The conductive foam is resilient and compensates for tolerances and variations within the seams and opening of the enclosure. The electrically conductive fabric is, of course, the EMI shielding. The fabric is modified to be electrically conductive throughout a metal plating process. Commonly plated with copper, silver and nickel, or combinations thereof, the fabric is highly conductive and remains flexible.
In addition to our EMI Profile Gaskets and I/O backplane gaskets, JEMIC Shielding Technology offers EMI shielding tapes, EMI cable shielding and EMI shielding laminates. We also have extensive in-house capabilities in the areas of assembly and value-added capabilities.
We appreciate your interest in our company and invite you to continue viewing our web site of electro magnetic shielding products. For more product information, details and specifications please visit our Contact Us page, or call us toll free at 866.882.0588.
Our Request for Quote page is available to place an online quote request or you can contact us toll free at 866.882.0588 to speak with a JEMIC Shielding Technology representative.