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RFI and EMI - Shielding and Absorbing Materials

Category Introduction

RFI and EMI shielding materials are designed to absorb, reflect or conduct electronic noise away from or around sensitive devices and circuits. Common shielding materials include aluminum, copper, tin, epoxy and ferrite powders, gold fabric, nickel, nitrile and forms of polyester.  They are available in adhesive and non-adhesive sheets, rolls, tapes and die-cut shapes.

Product List

4048 Items
PDF Mfr Part # Quantity
Available		 UnitPrice RFQ Series Packaging Product StatusTypeShapeLengthWidthThickness - OverallOperating TemperatureAdhesiveMaterial
EFF(03)-240X240T0800
EFF(03)-240X240T0800
RF EMI ABSORB SHEET 9.449X9.449"
KEMET
 6 $98.90
EFF Bulk Not For New DesignsAbsorbing SheetSquare9.449" (240.00mm)9.449" (240.00mm)0.013" (0.33mm)-40°C ~ 105°CNon-Conductive, Single SidedPolymer Resin, Magnetic Powder
EFX(05)-240X240T1500
EFX(05)-240X240T1500
RF EMI ABSORB SHEET 9.449X9.449"
KEMET
 5 $101.73
EFX Bulk Not For New DesignsAbsorbing SheetSquare9.449" (240.00mm)9.449" (240.00mm)0.025" (0.64mm)-40°C ~ 105°CNon-Conductive, Single SidedPolymer Resin, Magnetic Powder
10-04-6386-1298
10-04-6386-1298
CHO-SEAL 1298 AG/AL 0.040" 1'
Parker Chomerics
 48 $9.32
CHO-SEAL® 1298 Spool ActiveGasketRound12.000" (304.80mm)0.040" (1.02mm)--29°C ~ 66°C-Silicone Elastomer
IFM16-030EB300X200
IFM16-030EB300X200
EMI ABSORBER 300 X 200MM SHEET
TDK Corporation
 73 $11.58
IFL Bulk ActiveAbsorbing SheetSheet11.811" (300.00mm)7.874" (200.00mm)0.001" (0.03mm)-40°C ~ 85°CPressure Sensitive Adhesive (PSA)-
10-04-1687-1298
10-04-1687-1298
CHO-SEAL 1298 AG/AL 0.070" 1'
Parker Chomerics
 11 $13.66
CHO-SEAL® 1298 Spool ActiveGasketRound12.000" (304.80mm)0.070" (1.78mm)--29°C ~ 66°C-Silicone Elastomer
10-04-W267-1298
10-04-W267-1298
CHO-SEAL 1298 AG/AL 0.090" 1'
Parker Chomerics
 53 $14.30
CHO-SEAL® 1298 Spool ActiveGasketRound12.000" (304.80mm)0.090" (2.29mm)--29°C ~ 66°C-Silicone Elastomer
FFAM06 1*1T1
FFAM06 1*1T1
RF FERRITE SHEET 3.937"X3.937"
API Delevan Inc.
 12 $19.21
FFAM Bulk ActiveFlexible Ferrite SheetSquare3.937" (100.00mm)3.937" (100.00mm)0.024" (0.60mm)-55°C ~ 125°CNon-Conductive, Single SidedFerrite Powder
IFL12-100NB300X200
IFL12-100NB300X200
EMI ABSORBER 300 X 200MM SHEET
TDK Corporation
 10 $18.93
IFL Bulk ActiveShielding SheetSheet11.811" (300.00mm)7.874" (200.00mm)0.004" (0.10mm)-40°C ~ 85°CNon-Conductive, Single Sided-
38M5020AA1212
38M5020AA1212
RF FERRITE SHEET 4.724"X4.724"
Fair-Rite Products Corp.
 6 $22.25
Bulk ActiveFlexible Ferrite SheetSheet4.724" (120.00mm)4.724" (120.00mm)0.009" (0.23mm)-40°C ~ 85°C-Ferrite Powder, Nickel-Zinc (NiZn), PET Film
38M6010AA1212
38M6010AA1212
RF FERRITE SHEET 4.724"X4.724"
Fair-Rite Products Corp.
 27 $22.48
Bulk ActiveFlexible Ferrite SheetSheet4.724" (120.00mm)4.724" (120.00mm)0.005" (0.13mm)-40°C ~ 85°C-Ferrite Powder, Nickel-Zinc (NiZn), PET Film
1181 X 1/4
1181 X 1/4"
RF EMI SHIELDING TAPE 54'X0.25"
3M
 8 $23.97
1181 Bulk ActiveShielding Tape-54.000' (16.50m)0.250" (6.35mm)0.003" (0.07mm)-40°C ~ 130°CConductive, Single SidedCopper Foil
11.5X12-6-1181
11.5X12-6-1181
RF EMI SHLDING SHEET 12"X11.5"
3M (TC)
 26 $29.37
1181 Box ActiveShielding Sheet-12.000" (304.80mm)11.500" (292.00mm)0.003" (0.07mm)-40°C ~ 130°CConductive, Single SidedCopper Foil
2-6-1125
2-6-1125
RF EMI SHIELDING TAPE 18'X2"
3M (TC)
 20 $32.06
1125 Bulk ActiveShielding Tape-18.000' (5.50m)2.000" (50.80mm)0.004" (0.10mm)-Acrylic, Non-Conductive, Single SidedCopper Foil
354003
354003
RF FERRITE SHEET 4.724"X4.724"
Würth Elektronik
 24 $33.45
WE-FSFS Bulk ActiveFlexible Ferrite SheetSquare4.724" (120.00mm)4.724" (120.00mm)0.012" (0.30mm)-40°C ~ 85°CNon-Conductive, Single SidedRubber, Ferrite Powder, PET Film
IFL10M-200NB300X200
IFL10M-200NB300X200
EMI ABSORBER 300 X 200MM SHEET
TDK Corporation
 10 $39.51
IFL Bulk Not For New DesignsShielding SheetSheet11.811" (300.00mm)7.874" (200.00mm)0.008" (0.20mm)-40°C ~ 85°CNon-Conductive, Single Sided-
1181 X 1/2
1181 X 1/2"
RF EMI SHIELDING TAPE 54'X0.5"
3M
 14 $47.00
1181 Bulk ActiveShielding Tape-54.000' (16.50m)0.500" (12.70mm)0.003" (0.07mm)-40°C ~ 130°CConductive, Single SidedCopper Foil
2-6-1126
2-6-1126
RF EMI SHIELDING TAPE 18'X2"
3M (TC)
 3 $55.87
1126 Box ActiveShielding Tape-18.000' (5.50m)2.000" (50.80mm)0.004" (0.09mm)-40°C ~ 130°CConductive, Single SidedCopper Foil
AB5100SHF-210X297
AB5100SHF-210X297
RF ABSORB SHEET 11.693"X8.268"
3M
 13 $68.58
AB50000SHF Box ActiveAbsorbing SheetRectangular11.693" (297.00mm)8.268" (210.00mm)0.039" (1.00mm)-Non-Conductive, Single SidedPolymer Resin, Metal Flakes
1245 X 1
1245 X 1"
RF EMI SHIELDING TAPE 54'X1"
3M
 4 $73.63
1245 Box ActiveShielding TapeRoll54.000' (16.50m)1.000" (25.40mm)0.004" (0.10mm)-Non-Conductive, Single SidedEmbossed Copper Foil
EFW(03)-240X240T0800
EFW(03)-240X240T0800
FLEX SUPPRESSOR / NOISE SUPPRESS
KEMET
 7 $76.31
EFW Bulk ActiveAbsorbing SheetSquare9.449" (240.00mm)9.449" (240.00mm)0.013" (0.33mm)-40°C ~ 105°CNon-Conductive, Double SidedPolymer, Magnetic Powder

About RFI and EMI - Shielding and Absorbing Materials

What are RFI and EMI - Shielding and Absorbing Materials?

RFI and EMI - Shielding and Absorbing Materials

RFI (Radio Frequency Interference) and EMI (Electromagnetic Interference) - Shielding and Absorbing Materials are specialized materials designed to block or absorb electromagnetic waves, preventing them from interfering with electronic devices. These materials function by either reflecting electromagnetic waves away from sensitive components or absorbing them to dissipate their energy as heat. The basic operating principle involves the use of conductive or magnetic materials that create a barrier or absorbent layer, effectively reducing the electromagnetic field's strength and preventing interference with electronic circuits.

Types of RFI and EMI - Shielding and Absorbing Materials

Conductive Coatings

Conductive coatings are thin layers of conductive material applied to surfaces to create a shield against electromagnetic interference. They are often used on plastic enclosures to provide a conductive path that reflects electromagnetic waves. These coatings are versatile and can be applied to complex shapes, making them suitable for various applications.

Metal Foils and Meshes

Metal foils and meshes are commonly used for their excellent shielding properties. They are typically made from copper, aluminum, or steel and can be wrapped around cables or used as a lining in electronic enclosures. Their high conductivity and flexibility make them ideal for applications requiring robust shielding.

Absorbing Materials

Absorbing materials are designed to soak up electromagnetic waves and convert them into heat. These materials are often made from ferrites or specialized polymers and are used in situations where reflection is not desirable. They are particularly useful in reducing emissions from electronic devices and preventing interference in sensitive environments.

Gaskets and Seals

Gaskets and seals are used to prevent electromagnetic leakage at seams and joints in electronic enclosures. Made from conductive elastomers or metal-filled materials, they ensure a continuous conductive path, maintaining the integrity of the shielded enclosure.

How to choose RFI and EMI - Shielding and Absorbing Materials?

When selecting RFI and EMI shielding and absorbing materials, consider the following key parameters:

  • Frequency Range: Determine the frequency range of the interference to select materials that offer optimal attenuation at those frequencies.
  • Material Conductivity: Higher conductivity materials provide better shielding effectiveness, especially for reflective shielding solutions.
  • Thickness and Weight: Consider the space and weight constraints of your application to choose materials that fit without compromising performance.
  • Environmental Factors: Evaluate the operating environment, including temperature, humidity, and exposure to chemicals, to ensure material durability and longevity.
  • Installation Requirements: Assess the ease of installation and compatibility with existing components to streamline the integration process.

To evaluate product quality and reliability, review supplier certifications, customer reviews, and performance test data. Consider working with suppliers who offer customization options and technical support to tailor solutions to your specific needs.

Applications of RFI and EMI - Shielding and Absorbing Materials

Consumer Electronics

In the consumer electronics industry, shielding materials are used to prevent interference between devices such as smartphones, tablets, and laptops. They ensure that devices operate without disruption from external electromagnetic sources, enhancing user experience and device reliability.

Automotive Industry

Automotive applications require shielding materials to protect sensitive electronic systems, such as navigation and infotainment systems, from interference caused by engine components and external sources. This ensures the safety and functionality of modern vehicles.

Telecommunications

In telecommunications, shielding materials are critical for maintaining signal integrity in communication devices and infrastructure. They prevent cross-talk and signal degradation in cables and equipment, ensuring clear and reliable communication.

Aerospace and Defense

The aerospace and defense sectors rely on shielding materials to protect critical systems from electromagnetic interference, which can compromise mission-critical operations. These materials are used in aircraft, satellites, and military equipment to ensure operational security and reliability.

Medical Devices

Medical devices require stringent EMI shielding to prevent interference that could affect their performance and patient safety. Shielding materials are used in devices such as MRI machines and pacemakers to ensure accurate diagnostics and reliable operation.