The 2646540002 is a round cable EMI suppression core manufactured by Fair-Rite Products, designed to reduce electromagnetic interference in cable applications. This ferrite core features material grade 46 with burnished edges to remove sharp surfaces, and has a cylindrical geometry with outer diameter of 14.3 mm, inner diameter of 6.35 mm, and length of 28.6 mm. The core exhibits typical impedance values of 92 O at 10 MHz, 140 O at 25 MHz, 225 O at 100 MHz, and 262 O at 250 MHz, with a calculated DC bias field of 0.43 Oe for single-turn, single-ampere conditions. The core weighs 17.7 grams and is suitable for cable suppression applications where controlled impedance characteristics are required, with the core length customizable to meet specific application needs.