The Fair-Rite 5978011101 is a Toroid Core designed for superior performance in a wide range of electronic applications. Supreme Components International is an authorised distributor of Fair-Rite, ensuring you receive genuine, high-quality components. This ferrite core, made from Material 78, offers excellent magnetic properties for inductor and transformer designs. Its toroidal shape provides efficient flux containment, minimizing electromagnetic interference (EMI). With dimensions of A = 11.1 mm, B = 6.35 mm, and H = 4.75 mm, this core is suitable for various circuit designs requiring compact and reliable components. Ideal for use in power supplies, filters, and impedance matching networks, the 5978011101 delivers consistent and dependable performance.