The 2643540202 is a round cable core intended for EMI suppression applications. Constructed from 43 material, this ferrite core provides a typical impedance of 48 Ω at 10 MHz, 74 Ω at 25 MHz, and rising to 106 Ω at 100 MHz to attenuate high-frequency noise. It features an outer diameter of 14.3 mm, an inner diameter of 6.35 mm, and a length of 13.8 mm. All cores are burnished to remove sharp edges, facilitating safe handling and installation on cables in various electronic systems to improve signal integrity.