EMI & RFI Shielding

Electromagnetic shielding, also called “radiation shielding,” is a barrier that covers electronics to prevent electromagnetic interference. RFI shielding is a subtype of EMI shielding that’s specific to blocking radiofrequency electromagnetic radiation.

EMI shielding can prevent:
• Brownouts and blackouts
• Electrical fast transitions or EFTs
• Static on phone lines
• Power faults

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Aluminum — A cost-effective shielding material for ultra- to super-high radio waves. It's high conductivity and strength-to-weight ratio make it an excellent choice for EMI shielding.

Copper — This versatile metal is highly conductive, capable of blocking radio waves and magnetic forces, and is ideal for applications that require all three types of shielding.

Steel — Strong and durable, steel is not very versatile and blocks low-frequency waves only. Its rigidity makes it difficult to work with when used in tight spaces.

Nickel — Both inexpensive and effective, nickel is durable, hard, and conductive; nickel is used as an EMI shield on its own or combined with other metals to form magnetic alloys.

Mu-Metal — A new alloy designed for EMI shielding, mu-metal’s main elements are nickel and iron, making it both soft and magnetic; it blocks both electronic and magnetic fields.

Conductive Rubbers — Silicone has a very high tensile strength, and it’s flexible and resilient; neoprene is compressive and generally useful; these conductive rubbers are used to make EMI shielding gaskets that seal enclosures.

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