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RFI Shielding

A reliable source for RFI Shielding information and leading RFI Shielding Companies.

Radio frequency interference, or RFI, is radiated electromagnetic “noise,” which travels through the air as radio waves. RFI shielding is a process where interference from external electromagnetic signals is reduced on electronic devices. These external electromagnetic signals are capable of disrupting the function of electronic devices. Engineers create effective RFI shields by selecting materials that attenuate the strength of an electromagnetic signal and placing them around the device’s sensitive areas. Read More…

RFI Shielding 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.
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Leading Manufacturers

San Fernando, CA  |  818-764-8222

Spira Manufacturing Corp. offers the most reliable EMI gaskets & shielding for the electrical / electronic industries to meet required EMC/EMI shielding regulations.

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Spira Manufacturing Corporation $$$

Lancaster, NY  |  716-684-7600

Sealing Devices is a leading North American distributor and fabricator of EMI shielding products, including conductive elastomers, Soft-Shield® low closure force gasketing, windows, conductive adhesives, formed-in-place parts, vents and elastomers.

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Sealing Devices Inc. $$$

Randolph, NJ  |  973-366-0080

Omega Shielding Products is your premier source for high-performance, metal-stamped, fingerstock EMI RFI shielding solutions. An ISO9001:2008 certified manufacturer of EMI shielding and RFI shielding products, Omega offers an extensive line of EMI gaskets, rings and more to meet your specific needs. Omega Shielding Products maintains the highest levels of product quality and customer satisfaction.

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Omega Shielding® Products $$$

West Boylston, MA  |  508-835-6225

Central Coating is the largest applicator of coatings in the Northeast. We specialize in the application of EMI shielding, industrial, textured and conformal coatings; form in place gaskets, pad printing, silk screening and value-added operations. ISO 9001:2015 registered, Central Coating specializes in the custom application of EMI shielding material using robotic and manual application methods.

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Central Coating Company, Inc. $$$
placeholder image Spira Manufacturing Corporation Sealing Devices Inc. Omega Shielding® Products Central Coating Company, Inc.

The Principle of RFI Shielding

There are many RFI producers and RFI-sensitive products in the average household. However, RFI is a problem because the frequency range interferes with the functions of nearby equipment and devices. As an example, radio signals can be blocked in military initiatives by RFI. As a result, these signals can compromise entire missions.

RFI Shielding

Almost every electronic device can produce RFI, but the most common producers of RFI are motors, relays, processors, computers, industrial controllers, and high-tech medical devices. Electronic shielding gaskets are capable of protecting against RFI. In addition, many shielding gaskets are designed to provide complete shielding from radio frequency interference.

These shielding products are available in many shapes, sizes, mounts, materials, and seal types. Protecting modern electronic equipment from radio frequency interference with RFI shielding is very important to improve effectiveness. This is achieved by the simple addition of a shielding gasket. There are many custom-shielding gaskets on the market.

Types of RFI Shielding

The different types of RFI Shielding include:

Metalized Conductive Foam Gaskets

Metalized Conductive Foam gaskets include nickel-copper plated polyurethane foam sandwiched between the electrically conductive polyester fabric. The metalized conductive foam core performs better at higher frequencies than conventional perimeter-conductive products, mostly at higher frequencies.

RF Shielding

Flexible Ferrite Sheets and Magnetic Shielding Materials

These sheets are manufactured by thin, highly porous sintered ferrite with PET film and adhesive tape. Magnetic shielding materials are mostly used for near-field communication, radio frequency identification, and wireless charging applications. They are manufactured in standard ferrite layer thickness sheets and gaskets cut to the requirements.

RFI Shielding Mesh

Spring Finger Contact Strips

Spring finger contact strips are manufactured in stainless steel or beryllium copper. They come in standard coils or lengths and are used for frequent access door seals. They are also used on lids ranging from small hand-held devices to room-sized enclosures.

RFI Absorbers WAM

RFI Absorbers WAM is made from magnetic particles in a polymer resin for producing a composite absorber material. They are manufactured in sheet form or cut gaskets. They reduce RFI noise within enclosures by attaching to flexible connectors, cables, or positioning near LCD.

Board Level Shields

Board-level shields are manufactured as one-piece and two-piece surface mount shields. They minimize crosstalk, provide isolation of board-level components, and they reduce susceptibility without impacting system speed.

Conductive Silicone Elastomer

Conductive silicone elastomer is made from a range of fillers in a silicone elastomer. They are manufactured in sheet form and custom die-cut shapes, gaskets, O-rings, etc.

Conductive Fabric over Foam Gaskets

Conductive fabrics are coated fabrics wrapped over a soft sponge core (the foam gasket). They provide excellent conductivity as well as efficient shielding. They are supplied in the form of custom gaskets or shaped profile strips. They are used on panels, doors, chassis, and enclosures.

Conductive Cloth

Conductive Cloth offers good conductivity and a shielding effect. In addition, they provide high friction, abrasion resistance, and good metal binding.

Applications of RFI Shielding

Almost every industry that uses or produces electronic devices prone to electromagnetic interference can utilize RFI shielding. These industries have direct interests in reducing interference from external signals. These interfering signals have potential complications that range from the low-quality audio transmission to the complete failure of a rail control system. Many industries rely on RFI shielding, including:

  • Medical technology
  • Electric vehicles
  • Satellites and telecommunications
  • Military and defense
  • Aerospace

Benefits of RFI Shielding

RFI shielding tapes can:

  • Reduce signal interactions that cause communication problems.
  • Be cost-effective and highly versatile.
  • Be customized to fit any unique shielding application.
  • Ensure optimal performance of equipment.
  • Ensure the safety of equipment in a broad range of industries.

RFI Shielding Informational Video

 
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