The 2643806402 is a high-quality Ferrite Toroid Core from FAIR-RITE, a leading manufacturer of magnetic components. Supreme Components International is an authorised distributor of FAIR-RITE, ensuring you receive genuine products. This core, made from Material 43, is designed for optimal performance in a wide range of electronic circuits. Its toroidal shape provides excellent magnetic flux containment, reducing electromagnetic interference (EMI). The core's dimensions are 6.35mm outer diameter (OD), 3.18mm inner diameter (ID), and 3.18mm height (H). It is suitable for applications such as inductors, transformers, and filters. Material 43 offers a good balance of permeability and saturation flux density. Trust Supreme Components International for all your FAIR-RITE component needs.