21-CBSA-0.75X1.5X0.225

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RF shields refers to a type of metallic cover that encloses electronic components in order to protect them from electromagnetic interference, or EMI/RFI. Since EMI can cause disruption in performance or cause data errors, RF shields provide a necessary protection in many settings. At the same time, the shielding also helps to contain the RF emitted from the device and maintain compliance with local regulations. The 21-CBSA-0.75X1.5X0.225 is one type of RF shield with particular application fields and working principles.

Application Field

The 21-CBSA-0.75X1.5X0.225 is a rectangular shield with a height of 0.75 inches, a width of 1.5 inches, and a thickness of 0.225 inches. This shield is made of brass and is hollow in the middle, allowing wires and components to pass through the center of the shield. It can be used to shield a variety of parts or devices such as power supplies, oscillators, and amplifiers, as well as in military and defense applications. This type of RF shield is especially suited for applications that require a higher level of EMI/RFI protection, such as those in aerospace, telecommunications, and IT industries. Additionally, these shields can be used to protect device components from extreme temperatures and environmental conditions.

Working Principle

The inner wall of the RF shield works by reflecting the incident electromagnetic radiation, while the outer wall absorbs the incident energy in the form of heat. This means that the device components within the enclosure are not exposed to the electromagnetic waves which could cause interference or failure. The shielding itself is highly effective, providing protection up to 80 dB of shielding effectiveness in the frequency range of 30 MHz to 1GHz. Additionally, the hollow center of the shield ensures that the components receive ventilation, reducing the heat buildup which can occur inside a non-ventilated enclosure.

Conclusion

The 21-CBSA-0.75X1.5X0.225 RF shields are an excellent choice for applications requiring higher levels of shielding performance and environmental protection. Due to its construction, it is particularly ideal for delicate components and devices as it provides both reflectivity and absorption, helping to reduce the risk of disruption and allowing for better performance. As such, it is widely used in a variety of settings, especially in the military, aerospace, and telecommunications industries.

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