These filters are essential in scenarios where EMI control directly impacts safety, security, or precision. In military and defense applications, they protect electronic warfare systems and secure communication networks from electromagnetic reconnaissance threats. In healthcare, they eliminate ground noise in MRI suites and surgical robotics to ensure accurate imaging and patient safety. Industrial applications include EMI suppression for 5G base station cabinets and railway power grids, ensuring compliance with standards like EN 50121-5 for rail transit. They also serve research facilities, such as anechoic chambers and nuclear control rooms, by providing clean power for precision measurements across 10kHz–40GHz frequency ranges.