21M-CBSA-3.25X5.5X0.225

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RF shields are often used in electrical or electronics equipment to shield against radio frequency (RF) interference, control electromagnetic fields, and limit radiation exposure. 21M-CBSA-3.25X5.5X0.225 is one of the modern shields that is widely used in various industries. This article will discuss its application field and its working principle.

Application Field

21M-CBSA-3.25X5.5X0.225 is an aluminium profile shield with mounting holes which is mainly designed to be used in mixers, servers, laptops, computers and communication systems to protect them from RF interference. The copper filled aluminum material ensures high shielding effectiveness and makes it suitable for a wide range of applications. Other applications include optical instruments, medical equipment, and consumer products.

At the same time, 21M-CBSA-3.25X5.5X0.225 possesses excellent features, including an anodized finish that offers superior corrosion resistance, good heat dissipation, and excellent RF shielding performance. In addition, the profile shield also offers an excellent electromagnetic compatibility (EMC) performance, low electrical loss, low contact resistance, high temperature resistance, and high shock resistance.

Working Principle

The working principle of 21M-CBSA-3.25X5.5X0.225 is based on the concept of absorbing or blocking RF signals. The shield contains a copper foil which is electrically and magnetically conductive that serves as an absorber or blocker to reduce the flow of RF energy. The profile shield is made up of a sheet of aluminium which is encased in a sheet of copper. The copper acts as an electromagnetic shield and reduces the amount of RF energy that is able to pass through the aluminium.

The copper layer also serves as an electrical conductor, allowing a direct current to flow around the aluminium profile. This current serves to dissipate the electromagnetic energy into heat, thus shielding the aluminium profile from the RF energy. In addition, the aluminium profile also has a dielectric strength greater than the RF signal’s strength, allowing it to reject the RF signal before it can pass through the profile.

Finally, the profile shield can also be used to reduce RF interference by preventing RF signals from escaping the product. The profile also limits the spread of RF signals, by providing an isolation barrier between two adjacent components. This reduces the chances of the components being affected by unwanted RF signals, resulting in improved performance.

Conclusion

In conclusion, 21M-CBSA-3.25X5.5X0.225 is a modern RF shield that is widely used in various industries. Its excellent features, such as an anodized finish, good heat dissipation, and excellent shielding performance make it a suitable choice for use in mixers, servers, laptops, computers, and communication systems to protect them from RF interference. The shield works by absorbing or blocking RF signals, allowing direct current to flow around the aluminium profile, and by providing an isolation barrier between two adjacent components. This ensures improved performance and has made it one of the most popular RF shields used today.

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