The 2631801202 is a round ferrite core made from 31 material, specifically designed for EMI suppression on cables. It exhibits a typical impedance of 36 Ω at 10 MHz, which increases to 83 Ω at 100 MHz and 105 Ω at 250 MHz, effectively attenuating high-frequency noise. This burnished core has an outer diameter of 29 mm, an inner diameter of 19 mm, and a length of 13.85 mm. It is commonly used by placing it over round cables in electronic devices to reduce common-mode interference and ensure signal integrity.