The Fair-Rite 3078990831 is a Ferrite Toroid Core designed for a wide range of electronic applications. Manufactured by Fair-Rite, a leading provider of ferrite components, this core offers excellent performance and reliability. Supreme Components International is an authorised distributor of Fair-Rite, ensuring you receive genuine, high-quality components. This toroid core is made from Material 78, known for its high permeability and low core loss characteristics. Its dimensions include an outer diameter (OD) of 78.0 mm, an inner diameter (ID) of 49.0 mm, and a height (Ht) of 13.0 mm. These specifications make it suitable for applications such as power inductors, chokes, and transformers. The toroid shape provides excellent magnetic field containment, reducing electromagnetic interference (EMI).