The Fair-Rite 3078990851 is a Ferrite Toroid Core, meticulously crafted for superior performance in demanding electronic applications. Supreme Components International is an authorised distributor of Fair-Rite, ensuring you receive genuine, high-quality components. This toroid core, constructed from Material 78, offers excellent magnetic properties. Its dimensions include an Outer Diameter (OD) of 19.1mm, an Inner Diameter (ID) of 12.7mm, and a Height (Ht) of 6.35mm. These precise dimensions make it suitable for creating compact and efficient inductors and transformers. The Material 78 composition provides a balance of permeability and core loss, making it suitable for a wide range of frequencies. Trust Supreme Components International for all your Fair-Rite component needs.