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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.

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Applications

• 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

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Options

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

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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)

Benefits

• High shielding performance
• Easy to solder (a tinned version is also available, Part number 3285)
• Flame retardant

Examples where Mu-copper foil is used

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Tinned Mu-copper foil (3285)

Technical drawing

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

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Mu-copper foil with paper insulation (3287)

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

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Shielding performance

Field	Frequency	Mu-copper
		0.12 mm thick
E	1 MHz	125 dB
E	10 MHz	101 dB
E	100 MHz	120 dB
E	400 MHz	115 dB
P	1 GHz	110 dB
P	10 GHz	120 dB
These values are measured under laboratory conditions. In other situations, results may differ; please read our Guarantee.

3281 series - Mu-copper foil shielding performance

Please note : These values are measured under laboratory conditions. Results may vary in other situations; please read our Guarantee.

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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 [email protected]

* 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.

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Electrical insulation layer specifications

If you want us to provide an insulating layer on the Mu-copper then there are the following two options.

Specification
Color	White	Black
Material	Thermoplastic polyester	Thermoplastic polyester
Thickness	0.15 mm	0.22 mm
Flammability	UL94 VTM-0	UL94V-0
Technical datasheet	Download	Download