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. • Flexible, high permeability magnetic sheets • One-sided acrylic pressure-sensitive adhesive • Easily die cut into complex shapes Agency Approvals & Self Certifications RoHS 2002/95/EC RoHS Compliant 2002/95/EC” means that the product or part (“Product”) does not contain any of the substances in excess of the maximum concentration values in EU Directive 2002/95/EC, as amended by Commission Decision 2002/618/EC, unless the substance is in an application that is exempt under RoHS. This information represents 3M’s knowledge and belief, which may be based in whole or in part on information provided by third party suppliers to 3M.

Applications
■ AB7000 absorber 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 AB7000 absorber 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 AB7000 placed on a 50Ω microstrip line. The attenuation and noise dampening attained generally increases as the thickness of the material increases. Typical Properties Not for specifications. Values are typical, not to be considered minimum or maximum. Properties measured at room temperature 73°F (~23°C ) unless otherwise stated. Physical 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° to 85° C Surface resistivity (ASTM-257) 1x10 6Ω(min) Initial Permeability1 110 Typical Performance2 Refer to S11 attenuation and power loss graphs Notes: 1. This value measured at 1MHz 3M TM K RD-EMC-AB-02. 2. Attenuation is measured by 7mm coaxial verification kit under short fixed condition. Power loss is measured by a 50Ω microstrip line method. 3M TM K-RD-EMC-AB-01