The 2643163951 is a split flat cable core designed for reducing conducted electromagnetic interference (EMI). Constructed from 43 ferrite material, this core is effective at suppressing noise from 1 MHz up to several hundred MHz, providing a typical impedance of 84 Ω at 25 MHz and 178 Ω at 100 MHz. It is designed to fit over multi-conductor flat cables with a maximum cross-section of 51.00 x 1.30 mm. The split-core design allows for easy assembly onto existing cable harnesses, making it a versatile solution for EMI suppression in a wide range of electronic applications.