What are the most important factors that effect EMI/RFI shielding?
The following components comprise an effective EMI/RFI management solution: • A complete Faraday Cage over the EMI/RFI transmitting components that are tied to a true ground. • The EMI/RFID shielding cans or lids are the last resort and can always be relied on if the circuit design cannot take care of the EMI/RFI noise. • A good EMI/RFI gasket made of compressible metal springs or a conductive rubber is the solution when a large area inside a cabinet must be addressed. • If a see through window is required, a blackened mesh over a transparent window is a good solution. • If there is still EMI/RFI leakage, a good conductive caulk will take care of it. • Conductivity of the shielding materials is directly related to the shielding effectiveness of the solution, then followed by the thickness of the shielding materials. • Ventilation holes along the top surfaces are currently the only solution when heat must be removed for the components inside the shielding can. Some of the potential pit-
