RFI shielding is a method of protection against any electromagnetic disturbance that is emitted from either an electrical circuit or electronic component that may interfere with the operation of other electrical circuits or components. Radio frequency interference, or RFI, is radiated electromagnetic “noise,” which travels through the air as radio waves.
Spira Manufacturing Corporation
North Hollywood, CA
We are the RFI shielding experts. Since our founding, we have constantly searched for the best ways to create EMI shielding products. Our founder was not satisfied with other products on the market, so we created our own! We still believe in the same spirit of innovation, and we will work with you to find the ultimate solution to your problem. Contact us to learn more!
Compac Development Corporation
Bay Shore, NY
Looking for effective RFI shielding products? You've come to the right place! We are experts in the world of shielding, and have been since 1976. We offer off-the-shelf and customized products to suit all customer's needs. We are the expert at solving shielding problems, and are happy to help you find what you need. Contact us today for more info!
INTERMARK (USA), Inc.
San Jose, CA
At INTERMARK (USA) Inc. they recognize that constantly changing technologies can affect the sensitive electronic equipment you own. Because of this, utilizing RFI shielding methods and materials is crucial to the safe, reliable and long-lived functioning of electronics. To find out all the equipment and services INTERMARK can provide for you, contact them today.
Sytek Enterprises Inc.
North Vancouver, BC
We offer RFI shielding, EMI shielding, EMF shielding, and many other shielding products. Our customers come from the automotive, medical, industrial, and commercial markets. We believe in putting the customer first, which is why we have remained at the top of our field for more than 40 years. Our customers know they can trust us to do the job right. Contact us today to learn more!
Sealing Devices Inc.
Since 1963, we have provided the very best in EMI shielding and RFI shielding to customers around the world. To this day, we remain located in New York and our primary clients are all local residents of the area. However, we also have customers around the world, because our reputation makes us stand out in the sea of competition Contact us to learn more!
KEMAC Technology, Division of Tecomet
Looking for effective RFI shielding? You've come to the right place! We offer a full like of EMI and RFI shield products for industries around the globe. We will always look for the newest and most cost-effective solution to any problem. No matter what you needs are, we will work to make sure you are completely satisfied with our services! Visit our website or give us a call today to get started!
Equipto Electronics Corporation
This premier electronics packaging provider offers heavy duty racks, seismic racks, FCC racks, EMI/RFI shielded racks, seismic shielded racks, electronics desks, instrument cabinets, card cages, sub-racks & relay racks. If your RFI shielding requirements involve heavy duty EMI shielded cabinets, Equipto's superior line of shielded enclosures fits a wide variety of EMI/RFI suppression applications.
RFI ShieldingRFI is identical to EMI, or electromagnetic interference, except that EMI is conducted along wires, electrical circuits and conductors, while radio frequency interference (RFI) travels across "free" air space in the form of radio waves. Electromagnetic interference and radio frequency interference are the magnetic fields which are given off as a bi-product of electrical currents, and both EMI and RFI impede the normal flow of electricity through currents, causing interference and malfunction in electronic devices. Radio frequency interference is high frequency, typically 100 kilohertz or above; RF shielding is especially designed to block these high frequencies with copper, aluminum, galvanized steel, conductive rubber, plastic or EMI coating paints. RFI can be shielded by EMI enclosures, EMI coatings and EMI gaskets. It should be noted that not all of these block ground-conducted electromagnetic interference; EMI enclosures, gaskets and EMI coated enclosures aim to block out RFI signals traveling through the air and are not nearly as effective in trying to block conducted EMI.
EMI and RFI are created, by widely varying degrees, by everything which conducts electrical energy, including electrical wires, electrical appliances, computers and all electronic equipment. Signal-bearing electronic devices such as mobile phones, laptops and GPS devices give off RFI. Normal electrical currents are disrupted when moderate to high levels of EMI or RFI are introduced; un-channeled electromagnetic signals and radio frequency waves can act as "noise", magnetically altering normal flow of electrical currents and impeding the flow of electrical energy. Products such as EMI enclosures, EMI coated interiors and EMI gaskets are necessary to provide full protection from RFI, which continues to increase exponentially as more and more mobile electronic devices are introduced to the consumer market. However, even through RFI products can be used, RFI sprays are the most common form of RFI shielding. An RFI spray, or coating, is often composed of an acrylic base in addition to pure metals such as silver, copper or nickel. Some common applications of RFI shielding include packaging of electronic devices such as printed circuit boards (PCBs), cable assemblies, interconnects and input output filters. Industries that commonly require RFI shielding products include medical, telecommunications, electronics and military.
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