EMC Shielding is any method used to protect a sensitive signal from external electromagnetic signals, or preventing a stronger signal from leaking out and interfering with surrounding electronics. It can cover PCB elements such as IC chips and active components, or connectors and cables between PCBs.
EMC is short for ElectroMagnetic Compatibility, which means that a circuit has been designed with this prevention of disruption by shielding.
Electromagnetic frequencies can affect many sensitive electronics, and can cause a wide variety of different issues from a simple hiss on a communication line, to a total disruption of a safety-critical signal. As such it affects a diverse range of sectors, including all consumer and industrial electronics, and into critical systems for military and emergency services.
