48-CBSA-2.25X3.0X0.4

Series:	40-CBS
Packaging:	Bulk
Part Status:	Active
Type:	Shield, 2-Piece
Height - Overall:	0.400" (10.16mm)
Length - Overall:	3.000" (76.20mm)
Width - Overall:	2.250" (57.15mm)
Ventilation:	Vent Holes in Pattern
Mounting Type:	Through Hole

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48-CBSA-2.25X3.0X0.4 Application Field and Working Principle

RF Shields are physical barriers, such as enclosures or metallic masses, that are used to shield equipment or devices from electromagnetic (EM) interference or contamination. They are designed to block, absorp, or reflect unwanted radiation in order to protect the device or equipment from being affected by irrelevant external signals or emissions. RF shields can provide an adequate level of protection for a variety of applications, such as near or far-field shielding, as well as high or low frequency shielding. The 48-CBSA-2.25X3.0X0.4 is a RF shield that is designed to provide an effective near-field shielding solution for various types of RF emitted devices. It is an aluminum-based, hermetically sealed enclosure with a 2.25X3.0X040 dimensions. It is an open construction design, which makes it a suitable option for applications where space is limited. The enclosure is composed of an aluminum shell, an integrated RF absorbing material, a flux-sheet, and two removable aluminum covers. The 48-CBSA-2.25X3.0X0.4 can be used in a number of applications where electromagnetic interference and/or contamination is a concern, such as communications, audio/video, industrial control, medical and scientific instrumentation, computer systems, automotive systems, broadcasting, and military applications. The main purpose of the 48-CBSA-2.25X3.0X0.4 is to reduce or eliminate unwanted RF noise from entering the protected device or system. This is accomplished by creating a shielded enclosure which absorbs or reflects the signals. The combined properties of the aluminum shell, the integrated RF absorbing material, and the flux-sheet work together to provide an effective RF shielding solution for nearby RF emitted devices. The aluminum shell of the RF shield is designed to provide adequate electrical conductivity and shielding against incident RF fields. The aluminum shell of the RF shield must have a continuous lightning tight seal all the way around the device in order to ensure an adequate level of electromagnetic shielding protection. The integrated RF absorbing material, also known as EMI absorber, is designed to absorb any unwanted RF signals that may enter the enclosure. The EMI absorber is designed to reduce the radiation level that is both inside and outside the shielded enclosure. It is made up of layers of metallic material that have been laminated together and formed into a “honeycomb” structure. This type of absorber is highly effective in absorbing EMI signals from both low and high frequencies. The flux-sheet, which is placed between the aluminum shell and the EMI absorber, is designed to provide an effective AC and DC lightning protection. This sheet is made up of a conductive material and is designed to provide both a physical barrier as well as a conductive path to ground for any stray RF emissions or leakage.The two removable aluminum covers provide additional shielding protection and also act as a secondary cage to help ensure the enclosure is secure and airtight. The covers are important in keeping out dust particles and other foreign objects that may interfere with the functioning of the shielded enclosure. In conclusion, the 48-CBSA-2.25X3.0X0.4 provides an effective and reliable near-field RF shielding solution for a variety of applications. The integrated RF absorbing material, the flux-sheet, and the two removable aluminum covers ensure an adequate level of protection from outside RF signals and emissions. With its hermetically sealed construction and its open design, the 48-CBSA-2.25X3.0X0.4 can be used in spaces with limited room for effective near-field shielding.

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