EMI Shielding Explained
February 11, 2022
EMI stands for electromagnetic interference. EMI is a type of disturbance that can disrupt the performance of an electrical circuit. Also known as radio-frequency interference (RFI), EMI can cause circuits to degrade and ultimately fail. EMI shielding adds protection and stops these critical malfunctions from occurring.
However, it can be difficult to know where to begin when you’re new to circuit protection and EMI shielding. Fabri-Tech is here to help. Our experts have been providing exceptional products and unparalleled industry knowledge since 1993. Today, we look at EMI shielding and answer some of the most common questions about the basics of electromagnetic interference protection.
What is EMI Shielding?
EMI shielding provides protection by preventing disruptions caused by electromagnetic interference. This shielding can take many forms, including EMI shielding foil, gaskets, fabrics, and more. When properly installed, EMI/RFI shielding works by reducing the electromagnetic field in a space by placing barriers that are made of conductive or magnetic materials. The needs of your unique system will determine which type of EMI shielding is best for your application.
Is There a Difference Between EMI Shielding, RFI Shielding & EMC Shielding?
No. EMI and RFI are different terms for the same interference. EMC stands for electromagnetic compatibility, and it describes how well an electric system functions in an electromagnetic setting. While it is different than EMI/RFI, there is no difference between shielding requirements.
Why is EMI Shielding Important?
When EMI levels get too high, critical failures can cause widespread repercussions. These disruptions not only impact your equipment, but they can cause harmful emissions that can hurt users. By including appropriate EMI shielding in your circuit, you are stopping data losses and system crashes before they can occur, allowing workers and vital operations to run as planned.
What Shielding Materials Are Used Against EMI & RFI?
To provide adequate protection against electromagnetic interference, a variety of shielding materials can be applied. These materials include:
- Cement or concrete
- Conductive polymers and associated composites.
However, not all RFI shielding materials are created equal. Metals and carbons will provide the most comprehensive protection. Ceramics, cements, and polymers must be mixed with a metal or carbon to provide adequate EMC shielding and do not work well on their own.
What Are Some Applications for EMC Protection?
Devices impacted by electromagnetic interference are used throughout a vast range of industries. These include:
Where Can I Find High-Quality EMI Protection & RFI Shielding Components?
You’re in the right place. For decades, Fabri-Tech has been an industry leader in manufacturing customized precision electro-mechanical components, including EMI shielding materials and parts. Your best EMI shielding solution may include:
Get Started with Fabri-Tech Today
Contact us with further questions, system specifications, and other concerns to learn more about EMI shielding and our capabilities. Request a quote to begin an order. We’re ready to help you shield your products and safeguard users against EMI and other harmful emissions.