21-CBSA-2.25X2.25X0.225

Series:	20-CBS
Part Status:	Active
Type:	Shield, 2-Piece
Height - Overall:	0.225" (5.72mm)
Length - Overall:	2.250" (57.15mm)
Width - Overall:	2.250" (57.15mm)
Ventilation:	Non-Vented
Mounting Type:	Surface Mount, Through Hole

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What Is a 21-CBSA-2.25X2.25X0.225 RF Shield?

A 21-CBSA-2.25X2.25X0.225 RF Shield is an interconnect shield and also a grounded EMI-shielding solution designed to help reduce interference from electromagnetic signals. Made from quality-tested aluminum, the shield features a durable finish and leveraged standoff mounting system for shield insertion.

Applications Fields

These shields are used in a variety of applications, ranging from automotive to military and defense, where it is important to reduce interference from external electromagnetic signals, such as radar transmission or wide-band signals. These shields are also used in cellular phones and other consumer electronics to protect the internal circuits from external sources of EMI. In the case of automotive equipment, the shield also helps reduce the emission of unwanted electrical noise, or electromagnetic interference (EMI), to protect critical onboard systems from electromagnetic radiation.

Working Principle

The 21-CBSA-2.25X2.25X0.225 RF Shield features a two-part shield assembly with one part being an aluminum shell with a flanged bottom lip and an inner lining of K-Flex which helps to provide EMI-shielding. The second part of the shield assembly is a one-piece interconnect shield which is secured to the aluminum shell by leveraged staked or soldered standoffs. The standoffs are then connected together with a soldered lug to ensure a proper ground path and interconnection between the inner and outer shields. The inner shield provides a sealed environment in which signals can travel without interruption.The shielding properties of the shield are achieved due to the conductive K-Flex lining which helps to absorb incoming EMI and RF signals by reflecting or dissipating them away from the panel. The various standoffs also form a ground plane between the shield assembly and the enclosure, helping to reduce the amount of EMI/RF entering the interior of the enclosure. This ground plane also serves to reduce electrical noise generated by the circuits inside the enclosure.

Conclusion

The 21-CBSA-2.25X2.25X0.225 RF Shield is an effective EMI-shielding solution that can be used in a wide variety of applications. The two-part shield assembly with its conductive K-Flex lining and soldered standoffs provides both an electromagnetic shield and a grounding plane which helps to reduce electrical noise and emissions from components in the enclosure. It is a very effective way to reduce EMI/RF interference and protect sensitive components from radiation.

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