EIS provides expertise in materials selection and die-cutting for EMC shielding, EMI shielding, and RFI shielding applications in electronics, including consumer electronics. These materials can be die-cut into components to protect sensitive electronics from internal emissions or to protect users from external device emissions.
Electromagnetic interference shielding (known as EMI shielding) blocks the induction of electromagnetic radiation, produced as a normal by-product of electrical circuit operation from interfering with other circuits. An insulating material is typically used as a shield or barrier to separate different circuits. Radio frequency interference (known as RFI shielding) blocks magnetic radiation from traveling from one circuit to another by separating the circuits with a barrier insulation material.
Materials can include gaskets and seals made from highly absorbent elastomers that bridge uneven seams in electronic packaging. EMI shielding and RFI shielding are required in consumer electronics, including televisions, radios, cell phones, computers, and devices used in medical, automotive, and aerospace applications. Shielding is typically provided by Faraday cages that surround components and serve as barriers. These cages can be made of flexible materials supplied by manufacturers such as 3M, Parker Chomerics, Laird Technologies, Saint-Gobain, ITW, and Intertape Polymer Group.
Standard EMI shielding and RFI shielding materials include:
- Foil tapes
- Metal-filled elastomers
- Wire mesh
- Copper foil tapes
- Conductive fabrics laminated with conductive adhesives
- Absorbing materials and pads
In addition, EIS can provide an affordable, easy-to-use EMI/RFI testing kit, complete with:
- Magnetic field probe
- Electric field probe
- EMI/RFI demo fixture
- Material samples
- Cables and probes