/learn/learning-center/the-tech-connection/b/blog/posts/how-to-choose-an-emi-filter-for-your-electronics-productElectromagnetic interference (EMI) is unwanted noise or interference in an electrical circuit caused by an electromagnetic field (EMF). EMI can be radiated from sources such as radio transmitters, or conducted through wires or cables due to the flow en-USTelligent Community 12