The 2643540702 is a round cable EMI suppression core made from 43 material ferrite. It provides typical impedance values of 21 Ω at 10 MHz, 32 Ω at 25 MHz, and 44 Ω at 100 MHz, reaching 53 Ω at 250 MHz. This burnished core, which helps remove sharp edges, has an outer diameter of 14.3 mm, an inner diameter of 6.35 mm, and a length of 5.3 mm. It is designed to be placed on round cables to suppress electromagnetic interference, making it ideal for a wide range of electronic applications where signal integrity is crucial.