21L-CBSA-1.25X3.75X0.225

Series:	20-CBS
Part Status:	Active
Type:	Shield, 2-Piece
Height - Overall:	0.225" (5.72mm)
Length - Overall:	3.750" (95.25mm)
Width - Overall:	1.250" (31.75mm)
Ventilation:	Non-Vented
Mounting Type:	Surface Mount, Through Hole

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RF Shields

Radio Frequency (RF) shields are used to keep electromagnetic radiation from entering sensitive electronic equipment. RF shields can be made from a variety of materials, including aluminum, copper, and steel, and the method of shielding used is typically dependent upon the frequency and power of the radiation it needs to block. In some cases, a combination of two or more different shielding materials may be employed to achieve greater protection.One type of RF shield that is widely used is the 21L-CBSA-1.25X3.75X0.225. This is a low profile RF shield designed for use in mobile devices and radio frequency-based applications. It offers excellent protection against interference in applications that require a tight RF radiation pattern. The 21L-CBSA-1.25X3.75X0.225 shield has a tight tolerance that is designed to effectively block high-power radiation, while maintaining its low profile structure. The 21L-CBSA-1.25X3.75X0.225 shield’s primary application field is in cellular phones, media players, and digital cameras, as well as other RF-based electronic devices. The shield is also used in electronic equipment located in public areas such as airports, where it helps to protect equipment from RF radiation leakage from other sources.In order to achieve its shielding capabilities, the 21L-CBSA-1.25X3.75X0.225 utilizes a combination of materials and techniques. It combines aluminum, copper, and steel shielding layers to provide maximum protection against harmful interference and leakage. The three layers are arranged in such a way that allows the shield to efficiently reject RF waves at multiple angles of incidence. In addition, the shield can also be customized for specific applications by altering the thickness of its layers in relation to the radiation frequency and power.The working principle of the 21L-CBSA-1.25X3.75X0.225 shield is based on the Faraday Cage principle. The shield acts like a Faraday Cage, which is a sealed area that is lined with a conductive material that blocks external static and electrical fields and conducts them away from the equipment. This means that the shield offers an effective barrier against harmful interference and radiation from entering the electronic device. Additionally, this also allows the device to maintain a better signal quality, as it is not being interfered with from excessive radiation.In summary, the 21L-CBSA-1.25X3.75X0.225 shield is used to provide protection from undesirable radiation and interference in mobile devices and other RF-based applications. The combination of aluminum, copper, and steel shielding layers create a Faraday Cage which blocks external static and electrical fields. The shield also provides a tight tolerance, allowing it to effectively block high-power radiation while also maintaining its low profile structure. In addition to its uses in cellular phones and digital cameras, this RF shield is also beneficial in environments where there is a risk of RF radiation leakage from other sources.

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