RSEV EMC Filters TDK-Lambda RSEV 6A to 30A, 250VAC EMC Filters are integrated terminal blocks with captive screws. RSEV EMC Filters offer 60Hz frequency and reduced size compared to other TDK-Lambda filters. The recessed screws require no terminal cover. The captive connection screws protect the hardware. Applications include telecom/datacom, industrial, and test and measurement.