The Fair-Rite 3078990901 is a high-quality Ferrite Toroid Core, designed for optimal performance in a range of electronic circuits. Manufactured from Material 78, this core offers excellent magnetic properties. With an outer diameter of 78.0 mm, an inner diameter of 49.0 mm, and a height of 19.0 mm, it's suitable for creating custom inductors, transformers, and chokes. Supreme Components International is an authorised distributor of Fair-Rite components, ensuring you receive a genuine product. This toroid core is commonly used in power supplies, filters, and impedance matching circuits. Benefit from reliable performance and consistent quality with this Fair-Rite ferrite core. Trust Supreme Components International for all your electronic component needs.