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  5. 3M™ EMI Absorber AB7020HF, Gray, 210 mm x 297 mm x 0,25 mm, 50 Sheets/Case

3M™ EMI Absorber AB7020HF, Gray, 210 mm x 297 mm x 0,25 mm, 50 Sheets/Case

  • 3M ID WX300944161

Flexible, high permeability magnetic sheets

One-sided acrylic pressure-sensitive adhesive

Low Halogen version of AB7000 series absorbers.

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PDF (1) Copy 26Tech Data Sheet (PDF, 353KB)
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Details

Highlights
  • Flexible, high permeability magnetic sheets
  • One-sided acrylic pressure-sensitive adhesive
  • Low Halogen version of AB7000 series absorbers
  • Less than 900 ppm bromine and chlorine
  • Less that 1500 ppm total bromine and chlorine
  • Meets guidelines set forth in IEC 61249-2-21
  • Easily die cut into complex shapes
  • Consists of a flexible polymer resin loaded with soft metal flakes
  • Acrylic pressure-sensitive adhesive allows for easy application
  • Improved lower frequency absorber vs. the AB5000 or AB5000S Series (@ < 1 GHz)
  • Reduce EMI and RF noise in electronic systems
  • Apply to noisy traces, IC's and reflective surfaces in an enclosure

The 3M™ EMI Absorber AB7000HF Series is a high-permeability magnetic EMI absorber for near-field applications. It consists of flexible polymer resin loaded with a filler of soft metal flakes for excellent absorption at frequencies from 300 MHz to 4 GHz. Target frequency range– the “sweet spot” for peak performance – is 800 MHz - 2.5 GHz. An acrylic non-conductive pressure-sensitive adhesive on one side makes applying the material easy and efficient. These sheet type EMI absorbers are excellent for absorbing near-field EMI inside and around electronic devices and assemblies.

  • Icon of a sheet of material being peeled off of a stack, the icon is a blue line illustration with a white background.
    Easy Application
  • Icon of an antenna with signals radiating from the top, the icon is a blue line illustration with a white background.
    Improved Signal Integrity
  • Icon of a material with various thicknesses, the icon is a blue line illustration with a white background.
    Multiple Thicknesses
  • Icon of waves stuck between two substrates, the icon is a blue line illustration with a white background.
    Noise Suppression
Cross-section illustration of the product construction showing the three layers of Polymeric resin with magnetic flake filler, acrylic non-conductive adhesive, and poly-coated kraft (PCK) release liner.
Product construction

3M™ EMI Absorber AB7000HF Series is available in five thicknesses. Absorber thickness ranges from 0.03 mm to 0.50 mm. Adhesive thickness ranges from 0.01 mm to 0.05 mm.

  • Product performance

    3M™ EMI Absorber AB7000HF series has an absorbing response to high frequency magnetic noise up to 4 GHz as a result of high magnetic loss (μ’’) peaking at ~ 300 MHz and low stored energy (μ’) at higher frequencies.

  • A graph of product performance, the x-axis is frequency and y-axis permeability. As the frequency increases, the permeability decreases.

Specifications

Resources

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3M™ Magnetic Isolator EM25TP3M™ Flux Field Directional Material EM25TP
Applications EMI Absorbing
Brands 3M™
Overall Length (Metric) 297 Millimeter
Overall Thickness (Metric) 0.2 Millimeter
Overall Width (Metric) 210 Millimeter
Product Usage Display Chip on Flex, Enclosures, Flexible Printed Circuits, Cables, Printed Circuit Boards, Antennas, Semiconductor Chips
Legal disclaimer
*Halogen-free is defined as having maximum 900 ppm bromine, maximum 900 ppm chlorine, and/or maximum 1500 ppm total bromine and chlorine, per IEC 61249-2-21.
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