The 2643250302 is a 43 Shield Bead ferrite EMI suppression component manufactured by Fair-Rite Products for controlled impedance filtering applications. This bead features a burnished finish (indicated by the final digit "2" in the part number) and is constructed from 43 material grade ferrite with guaranteed minimum impedance specifications. The bead has outer diameter A of 6.35 mm (0.25 inch), inner diameter B of 2.95 mm (0.125 inch), and length C of 15.9 mm (0.626 inch), with a weight of 1.5 grams. Typical impedance values are 38 O at 10 MHz, 82 O at 25 MHz, and 134 O at 100 MHz, with a DC bias field of 0.91 Oe per ampere-turn. The bead length can be modified to suit specific applications, and Parylene coating is available upon request with a minimum thickness of 0.005 mm. This component is ideal for EMI suppression in signal lines, power distribution, and high-frequency filtering applications where reliable noise attenuation is required.