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Mu-ferro foil & tape

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Series

Specify the width of MuFerro (max. 50 mm) in mm. MuFerro-SD max. width is 470 mm
Length of the tape in meters.

Mu-ferro foil/tape is a thin foil; its thickness is only 0.023 mm. It combines excellent soft magnetic properties with unusual mechanical hardness and flexibility. This means that tight bends can be realised with only very slight impairment of permeability. The fine strip thickness and comparatively low electrical conductivity permit effective shielding even of higher-frequency fields. The roll can be ordered ordered up to 100 meter in length and a width up to 50 meter.


Applications

The primary applications of Mu-ferro foil/tape are flexible shielded cables with small diameters and rapid, flexible solutions to problems at low field strengths. 

Other applications
  • Magnet heads
  • Magnetic field sensors
  • Chokes
  • Transformers
  • Electronic article-surveillance tag

Advantages
  • Very high permeability
  • Low losses

Characteristics

Mu-ferro foil works well for shielding low-frequency magnetic fields. Due to the low electrical resistance it shields both low-frequency electric fields (LF) and high-frequency fields (HF). Comparable with Mu-Metal specifications.

Properties
  • Easy to bend
  • Easy to fold
  • Can be cut with scissors
  • Good corrosion resistance in a normal environment
  • Bending, folding, cutting does not cause major loss of attenuation
Grounding

Due to the highly conductive surface this material can be grounded easily to shield low-frequency (LF) electric fields. For professional grounding please contact us.


Technical data
Properties Values
Width Any width up to 50 mm
Length By the meter; rolls of up to 100 m
Attenuation LF magnetic field 14 dB = 80 % (for more shielding, use multiple layers); Attenuation HF: 100 dB at 1 GHz
Permeability µ4
Saturation induction Bs 0.58 T
Density 7.7 g/cm3
Curie temperature °C 200
Crystallisation temperature Tx °C 530
Specific electrical resistance 1.4 µΩm
These values are measured under laboratory conditions.
In other situations results may differ; please read our Guarantee.

Mu-ferro foil (3284)
Mu-ferro tape versions

Technical drawing
Mu-ferro tape with conductive adhesive (3208)
Mu-ferro tape versions

Technical drawing
Mu-ferro tape with standard adhesive (3305)
Mu-ferro tape versions

Technical drawing
Mu-ferro foil with 0.15 mm thick, white insulation layer (3408)
Mu-ferro tape versions

Technical drawing
Mu-ferro foil with 0.22 mm thick, black insulation layer (3468)
Muferro tape foil with 0.22 mm thick black insulation layer

Technical drawing
Mu-ferro SD
Mu-ferro tape versions

Technical drawing

Standard part numbers
Specification Part number  
3284 3208 3305 3408 3468 Mu-ferro SD
Structure mu-ferro foil construction mu-ferro foil construction mu-ferro foil construction mu-ferro foil construction mu-ferro foil construction mu-ferro foil construction
Product description Mu-ferro foil Mu-ferro tape with conductive adhesive Mu-ferro tape with standard adhesive Mu-ferro foil with 0.15 mm thick, white insulation layer Mu-ferro foil with 0.22 mm thick, black insulation layer Mu-ferro foil 0.12 mm
Foil material Mu-ferro Mu-ferro Mu-ferro Mu-ferro Mu-ferro Mu-ferro 
Surface Silver colour Silver colour Silver colour Silver colour Silver colour Silver colour 
Foil thickness 0.023 mm 0.023 mm 0.023 mm 0.023 mm 0.023 mm 0.12
Total thickness 0.023 mm 0.048 mm 0.048 mm 0.175 mm 0.243 mm 0.12
Adhesive No adhesive Synthetic conductive resin Synthetic conductive resin No adhesive No adhesive No adhesive (on request)
Adhesive performance - 4.5 N/cm 4.5 N/cm - - -
Tensile strength - - - - - -
Temperature resistance - - - - -  
El. resistance through adhesive - 0.003 ohms 0.003 ohms - - -
Standard roll widths (mm)* max. 50 mm max. 50 mm max. 50 mm max. 50 mm max. 50 mm Max. 470 mm
Roll lengths* max. 100 m max. 100 m max. 100 m max. 100 m max. 100 m max.100 m
These values are measured under laboratory conditions.
In other situations results may differ; please read our Guarantee.
 

*Other roll widths/lengths on request


For a larger width we can recommend the tape the Mu-ferro shielding foil. The foil is a magnetic shielding sheet and made of a high permability material laminated on a PET film. The sheets are easy to handle and because of the thinness of 0.12 mm the material is very flexible.
The Mu-ferro SD shielding foil can be made on roll or sheet. Standard without adhesive but optional on request

  • On roll of max. 470 mm and a max. roll length of 100 m.
  • Sheets of max. 610 x 460 mm

More information about the Mu-ferro shielding foil.

Mu-ferro HD shielding foil
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