40-CBSA-1.5X3.75X0.4

Series:	40-CBS
Packaging:	Bulk
Part Status:	Active
Type:	Shield, 2-Piece
Height - Overall:	0.400" (10.16mm)
Length - Overall:	3.750" (95.25mm)
Width - Overall:	1.500" (38.10mm)
Ventilation:	Vent Holes in Pattern
Mounting Type:	Surface Mount

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RF Shields Application Field and Working Principle

Radio Frequency (RF) shielding is a method of using metal shields to block or prevent the transmission of radio frequencies (RF) from one point to another. These shields are used to protect electronic components and systems from EMI interference. They also reduce the risk of disruption or interference from unwanted RF signals.The basic principle behind RF shielding is that the material used to construct the shield has a low electrical conductivity. This inhibits the passage of RF energy through the material, either by blocking or reflecting it. The thickness and density of the material dictates the amount of shielding that will be provided.RF Shields come in many shapes and sizes and can be used for a variety of applications. Common applications include medical and scientific research centers, military bases, factories, and office buildings. It is also used to help protect electrical equipment from high-frequency radiation and to provide noise isolation and low signal leakage.RF shielding materials are typically constructed from copper, aluminum, steel, tin, or other conductive materials. These materials can be in the form of a solid metal sheet, foil, wire mesh, fabric, or another material. The material used will depend on the type and level of shielding that is needed. In addition to shielding materials, RF shields also come in the form of enclosures, rugs, paint, and window films. Enclosures are metal boxes that contain the sensitive components to prevent them from being exposed to external radio signals. Rugs are special shields that come in mats and can be laid down on the floor to prevent the transfer of RF signals. Window films are made of a special material that blocks RF radiation from entering the window. When selecting an RF shielding material, it is important to consider the frequency of the RF signal and the shielding effectiveness required. Frequency ranges from low (audio) to very high (microwave). The higher the frequency, the more effective the shielding material should be. Also, make sure to select a material that has high conductivity and low permeability. The effectiveness of the shielding can also be increased by using an absorptive material such as foam or foam-lined cabling rather than a metalic shield. This is because absorptive materials absorb the radiated energy instead of reflecting it back to the source.It is important to remember that RF shielding can only reduce the amount of interference. It cannot completely eliminate it. Additionally, it is also important to use suitable materials in order to prevent the build-up of electro-magnetic fields and reduce the risk of interference from external sources.In conclusion, RF shielding provides protection against external RF signals. It works by blocking or reflecting the RF energy, using materials such as copper, aluminum, steel, or other conductive materials. When selecting a suitable shielding material for a particular application, it is important to consider the frequency of the RF signal and the desired shielding effectiveness. Although shielding cannot eliminate all of the interference, it is still an effective way of preventing disruption from external signals.

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