Mu-Copper Foil

Mu-Copper Foil

 Mu-Copper Foil 3281

Mu-copper foil and sheets for EMI shielding can be used to shield plastic housings and enclosures or for complete shielding of existing rooms in buildings, to create a Faraday cage.

Many EMI problems can be solved easily by the use of conductive foils and conductive sheets. Some of the most commonly used materials are Mu-copper foil, reinforced Amucor foil and highly conductive textile.

All of theses materials can be produced with or without (conductive) self-adhesive and an optional insulation layer.


  • Shielding plastic enclosure parts
  • Shielding any non-conductive materials
  • Ground plane
  • Anti-static floor
  • Electrical connection between surfaces (sheets / foils)
  • Die-cuts
  • Shielding in housings
  • Shielding cables
  • Temporary shielding during tests


  • Flame-retardant version
  • With (conductive) self-adhesive backing
  • With insulation layer
  • Cut into the desired shape (possible via CAD drawing)

Mu-copper foil can be easily cut into any desired shape.


Colour of Mu-copper foil

Mu-copper foil can be bent into shape, for example to fit inside plastic electronics enclosures (For more information click here)

Thanks to our automated CNC cutting system we can also cut our shielding foils in large quantities and according to your CAD drawing

Mu-copper foil (3281, 3282, 3283)

Mu-copper foil has superb shielding performance (also at low frequencies), can be soldered, and can easily be folded into the desired shape. Mu-copper foil is used to make small EMI shields like PCB-shielding cans, but also to EMI-shield entire existing rooms (Faraday cages, screen rooms, shielded boxes etc.).

Part numbers

  • 3281 : Mu-copper foil (0.035 mm thick)
  • 3282 : Mu-copper foil (0.12 mm thick)
  • 3283 : Mu-copper foil (0.18 mm thick)


  • High shielding performance
  • Easy to solder (a tinned version is also available, Part number 3285)
  • Flame retardant
Examples where Mu-copper foil is used


Tinned Mu-copper foil (3285)


Mu-copper foil with paper insulation (3287)

Technical drawing

Similar to Mu-copper foil Part number 3281, but with a tin layer for corrosion protection and improved solderability.

Technical drawing

Similar to Mu-copper foil Part number 3281, but with a layer of paper added to insulate the top layer of the foil.

Shielding performance of tapes and foils
■ Amucor foil
Conductive textile
Please note: These values are measured under laboratory conditions. Results may vary in other situations; please read our Guarantee.
Standard part numbers
Thickness (mm) Max. width (mm) Part number Part number with white insulation layer added* Part number with black insulation layer*
Mu-copper 0,035 600 3281 3401 3451
Mu-copper 0.12 1000 3282 3412 3452
Mu-copper 0.18 1000 3283 3418 3458
Mu-copper with paper insulation 0.035 1500 3287
Tinned Mu-copper 0.035 330 3285 3402 3462
Films or tapes with different specifications are available on request. Please send an e-mail to * For more information on the insulating layer, see table below. Note that by the thickness in the above table, the thickness of the insulation layer still needs to be added.
Electrical insulation layer specifications
If you want us to provide an insulating layer on the Mu-copper then there are the following two options.
Color White Black
Material Thermoplastic polyester Thermoplastic polyester
Thickness 0.15 mm 0.22 mm
Flammability UL94 VTM-0 UL94V-0

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