Technical Data June 2014 3M EMI Absorber AB7000 Series Product Description 3M EMI Absorber AB7000 Series consists of a flexible polymer resin loaded with soft metal flakes. An acrylic pressure-sensitive adhesive allows for easy application. Features and Benefits Flexible, high permeability magnetic sheets One-sided acrylic pressure-sensitive adhesive Easily die cut into complex shapes Applications 3M absorber AB7000 series is typically used for applications requiring EMI control and signal integrity improvement in the 50MHz to 10 GHz range. It is a broadband EMI absorber designed to work in near-field applications inside and around electronic devices and assemblies. Common applications include reduction of noise and crosstalk inside mobile electronics, reduction of crosstalk and EMI on ribbon cables and flex cables, reduction of radiated IC noise (applying absorber directly to the noisy IC), damping of radiation and oscillations inside shields and cavities, and increasing signal integrity on high speed data lines through crosstalk reduction. Attenuation and Power Loss Many factors determine the true attenuation of an electromagnetic interference absorbing material, including shape and thickness, intimacy of substrate contact, smoothness of application surface, strength and frequency of the EMI signal, etc. Since 3M absorber AB7000 series is a near field absorber, attenuation characteristics tend to be very application specific. Power loss characteristics are measured using a 5cm x 5cm square of 3M absorber AB7000 series placed on a 50 microstrip line. The attenuation and noise dampening attained generally increases as the thickness of the material increases. 3M EMI Absorber AB7000 Series 3M EMI Absorber AB7000 Series Typical Physical Properties Note: T he following technical information and data should be considered representative or typical only and should not be used for specification purposes. Property (Test Method) Typical Value Adhesive Acrylic non-conductive pressure-sensitive adhesive (PSA) Type of Backing Polymer resin with magnetic metal flake filler Product Number AB7010 AB7020 AB7030 AB7050 Backing Thickness 0.10mm 0.20mm 0.30mm 0.50mm Adhesive Thickness 0.03mm 0.05mm 0.05mm 0.05mm Standard Packaging 210mm x 297mm Temperature Range -25 ~ 85C 6 Surface Resistivity (ASTM-257) 1 x 10 (min) 1 Initial Permeability 110 2 Typical Performance Refer to S attenuation and power loss graphs 11 1 T his value measured at 1MHz 3M TM K RD-EMC-AB-02. 2 A ttenuation is measured by 7mm coaxial verification kit under short fixed condition. Power loss is measured by a 50 microstrip line method. 3M TM K-RD-EMC-AB-01. Permeability 120 100 80 60 40 20 0 1 10 100 1000 3000 Frequency MHz 1.0 (2) 0.8 0.6 0.4 AB7010 AB7020 AB7030 0.2 AB7050 0.0 45 100 1000 6000 Frequency MHz 0 -1 -2 -3 AB7010 AB7020 -4 AB7030 AB7050 -5 45 100 1000 10000 Frequency MHz Reection Loss dB Power Loss (P /P ) Permeability Loss In