21L-CBSA-2.5X5.25X0.225

Series:	20-CBS
Part Status:	Active
Type:	Shield, 2-Piece
Height - Overall:	0.225" (5.72mm)
Length - Overall:	5.250" (133.35mm)
Width - Overall:	2.500" (63.50mm)
Ventilation:	Non-Vented
Mounting Type:	Surface Mount, Through Hole

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Introduction to RF ShieldsRF Shields play an important role in protection from radio frequency (RF) noise and electromagnetic interference (EMI). They consist of a metal casing which encloses a printed circuit board (PCB) and its components, and an RF absorbing material. They are designed to protect the PCB and its components from RF radiation and other EMI sources. 21L-CBSA-2.5X5.25X0.225 Application Field and Working PrincipleThe 21L-CBSA-2.5X5.25X0.225 is an RF shield commonly used in the defense, aerospace, medical, telecommunications, automotive, and industrial fields. It is a 2.5 mm (0.98") wide and 5.25 mm (2.04") high shield made of aluminum material that is 0.225 mm (0.0089") thick. It is designed to reduce the amount of RF radiation and EMI that reaches the electronic components on the PCB.The working principle of the 21L-CBSA-2.5X5.25X0.225 Shield is based on a combination of materials that absorb and dissipate RF radiation and EMI, thereby reducing the amount of electromagnetic energy that reaches the components on the PCB. This shielding works in two ways: 1. Firstly, the aluminum material acts as a shield, reflecting RF radiation away from its enclosed space. This reduces the amount of RF radiation that reaches the PCB and its components.2. Secondly, the RF absorbing material absorbs and dissipates RF radiation and EMI. This further reduces the amount of RF radiation that reaches the PCB and its components.In addition to this, the shielding structure also improves heat dissipation, as heat is dissipated away from the PCB and its components. This further improves the performance and reliability of the electronics.ConclusionThe 21L-CBSA-2.5X5.25X0.225 Shield is a popular RF shield used in the defense, aerospace, medical, telecommunications, automotive, and industrial fields. It is designed to reduce the amount of RF radiation and EMI that reaches the electronic components on the PCB. The Shield works by combining materials that absorb and dissipate RF radiation and EMI, thereby reducing the amount of electromagnetic energy that reaches the components. Moreover, the shielding structure also improves heat dissipation, as heat is dissipated away from the PCB and its components.

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