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EMI/RFI Shield Machining

Well-designed EMI and RFI shielding is essential in aerospace, defense, consumer electronics and other manufacturing sectors. Preventing unwanted interference requires a combination of skilled fabrication and quality materials.

American Micro Industries provides EMI and RFI shielding machining to tight tolerances, using advanced products and more than two decades of experience to help our customers reach their goals. We can quickly turn around projects to your specifications.

EMI and RFI Shielding Materials

Electromagnetic interference (EMI) and radio frequency interference (RFI) refer to unwanted electromagnetic noise and the effect it can have on a device or cable. RFI and EMI shielding can have several potential applications. Use it to:

  • Prevent an electronic device from producing unwanted interference
  • Prevent an electronic device from being affected by outside interference
  • Contain or exclude RFI/EMI while also pressure sealing an electronic
  • device
  • Ground an electronic device

Any device whose performance would be impacted by interference should include proper shielding. Different shielding materials are better suited to some of the above tasks than others. Some of the more common materials used in commercial and industrial components include:

  • Plastic Compounds: Standard elastomers, such as silicone and polycarbonate, can be impregnated with carbon or stainless-steel fibers to provide immunity from EMI or RFI emissions. Connector gaskets and other components found in automotive, aerospace or other systems typically use these materials. Plastic EMI shielding is flexible, cost-effective and easy to work with, particularly if you’re machining EMI/RFI shielding to a specific shape.
  • Metals: Thin strips of metal can also be used for EMI shielding. Common materials include copper, aluminum and pre-tin plated steel. These provide protection against interference across the RF spectrum, as well as good conductivity and a high strength-to-weight ratio. Potential applications include medical devices and consumer electronics.
  • Laminates: Laminate materials contain an electrically conductive metal layer — typically copper or aluminum foil — and a dielectric base such as PVC, Mylar or PP. Laminate shields are affordable, lightweight and thin. They have a range of potential applications, including consumer electronics and telecommunications devices with flexible printed circuit boards.
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American Micro Industries provides EMI shielding machining services for many different customers. One of the reasons we've been a leader in this field since 1995 is because we can tailor our approach to reflect the needs of every business we work with.

Working With American Micro Industries

Count on American Micro Industries for your next RFI or EMI shielding machining project. We have invested in technology. We offer low tooling costs, no order minimums and exceptional service based on more than two decades of expertise.

Each project begins with a free, no-obligation quote. To get started, call or email our head office directly.