ComponentsPassive ComponentsEMC ComponentsEMC ShieldingMagnetic Shielding

WE-EMIP EMI Patch

WE-EMIP EMI Patch

Characteristics

  • Hybrid material with absorber and metal layers, effective both against magnetic and electric fields
  • Wide frequency range from 100 Hz up to 25 GHz
  • Extremely flexible
  • Very low thickness: 0.072 mm
  • Isolated version with high surface resistance
  • Non-isolated version which allows the connection of the metal layer to ground, housing,…
  • With self-adhesive backing for easy installation
  • Absorber layer with permeability of 100
  • Metal layer: Aluminum
  • Operating temperature: -25 up to +105°C
  • Easy to process
  • Custom designs on request
    • Permeability
    • Shape and size
    • Metal layer
    • Thickness
    • Isolation
    • Adhesive

Applications

  • Alternative to classical Shielding Cabinet solution, providing similar levels of shielding effectiveness
  • EMC noise suppresion
  • Magnetic Decoupling
  • SAR reduction
  • Avoiding cavity resonances
  • Prevention of Electro Static Discharge
  • Housing and openings between PCB's, on IC's, processors and controllers, on cables which need high flexibility and LCD/LED monitors.
  • Useful for any kind of electronic device

Products

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Order Code
Data­sheet
Simu­lation
Downloads
Status
µʹ
@ 1 MHz
L(mm)
W(mm)
H(mm)
Version
Samples
371000
100, 15000 mm, 50 mm
Simu­lation
Downloads3 files

CAD files ZIP

Download all 3 files as zip archive
ZIP

Status Activei| Production is active. Expected lifetime: >10 years.
Complex Permeability100 
Length15000 mm
Width50 mm
Height0.072 mm
VersionNon-Isolated 
371001
100, 105 mm, 74 mm
Simu­lation
Downloads3 files

CAD files ZIP

Download all 3 files as zip archive
ZIP

Status Activei| Production is active. Expected lifetime: >10 years.
Complex Permeability100 
Length105 mm
Width74 mm
Height0.072 mm
VersionNon-Isolated 
371002
100, 297 mm, 210 mm
Simu­lation
Downloads3 files

CAD files ZIP

Download all 3 files as zip archive
ZIP

Status Activei| Production is active. Expected lifetime: >10 years.
Complex Permeability100 
Length297 mm
Width210 mm
Height0.072 mm
VersionNon-Isolated 
371100
100, 15000 mm, 50 mm
Simu­lation
Downloads3 files

CAD files ZIP

Download all 3 files as zip archive
ZIP

Status Activei| Production is active. Expected lifetime: >10 years.
Complex Permeability100 
Length15000 mm
Width50 mm
Height0.072 mm
VersionIsolated 
371101
100, 105 mm, 74 mm
Simu­lation
Downloads3 files

CAD files ZIP

Download all 3 files as zip archive
ZIP

Status Activei| Production is active. Expected lifetime: >10 years.
Complex Permeability100 
Length105 mm
Width74 mm
Height0.072 mm
VersionIsolated 
371102
100, 297 mm, 210 mm
Simu­lation
Downloads3 files

CAD files ZIP

Download all 3 files as zip archive
ZIP

Status Activei| Production is active. Expected lifetime: >10 years.
Complex Permeability100 
Length297 mm
Width210 mm
Height0.072 mm
VersionIsolated 

One for all solution

One for all solution

The EMI Patch is a universal solution with wider frequency range and higher attenuation than conventional absorber sheets and additional heat dissipation.

The combination of absorber and metal layer enables a new level of board level shielding. Stray fields are absorbed whereby nearly same perfomance as with the help of shielding cabinets is achieved.

Available in sheet form or on a roll, it is the perfectly adaptable solution for testing, EMC labs and also final production. With less than 0.1 mm thickness the EMI patch is suitable for applications with limited height.

The diagram shows the magnitude and frequency dependence of an EMI patch compared to a conventional absorber sheet.

How it works

EMI patch floats parallel to a component, with red circular electromagnetic currents drawn in between.

If the magnetic layer is used alone, it attenuates EMI.

EMI patch floats parallel to a component, with red circular electromagnetic currents drawn in between and additional blue horizontal circles on the EMI patch.

With the metal layer, electromagnetic interference is attenuated, but it triggers eddy currents that lead to magnetic leakage.

EMI patch floats parallel to a component, with red circular electromagnetic currents drawn in between and additional blue horizontal circles on the EMI patch.

By combining the metal with the magnetic layer, not only it does not re-radiate, but also this combination decreases largely the level of electromagnetic radiated emissions measured in the near field.

A digital isolator lies on a green plate, which is additionally connected to an EMI patch.

The metal layer in the EMI Patch functions as a ground reference plane when connected to GND.

  1. When installing, make sure that the metal layer is on the top.
  2. Mounting the EMI Patch onto the component is made simple with its adhesive tape layer.
  3. Employing shielding tape (WE-CF) ensures a low-impedance ground connection.
An EMI patch floats above a component and two arrows run through the patch from bottom to top.

Thanks to the metal layer the EMI Patch has a good thermal coductivity and thus helps to dissipate heat. The aluminum layer is able to spread the heat through its whole surface, being more effective in thermal management than a common absorber sheet.