The Fair-Rite 5977001901 is a high-quality Ferrite Toroid Core, designed for optimal performance in a wide range of electronic applications. Manufactured by Fair-Rite, a leading name in ferrite technology, this core boasts exceptional magnetic properties thanks to its Material 77 composition. Supreme Components International is an authorised distributor of Fair-Rite, ensuring you receive genuine components. Key specifications include an outer diameter (OD) of 19.1mm, an inner diameter (ID) of 9.5mm, and a height (H) of 6.35mm. This toroid core is commonly used in the construction of inductors, transformers, and noise filters, providing excellent inductance and impedance characteristics. Its toroidal shape minimizes flux leakage, making it suitable for applications where electromagnetic interference needs to be minimized. Trust Supreme Components International for your Fair-Rite component needs.