The Fair-Rite 5678181221 is a Ferrite Toroid Core, a crucial component in numerous electronic circuits. Manufactured from Material 78, this core offers excellent performance characteristics. Its toroidal shape provides a closed magnetic path, minimizing flux leakage and enhancing efficiency. The core's dimensions are 18.1mm outer diameter, 11.3mm inner diameter, and 6.35mm height. This makes it suitable for applications such as inductors, transformers, and noise filters. As an authorized distributor of Fair-Rite components, Supreme Components International guarantees the authenticity and quality of this product. Trust Supreme Components International for reliable electronic components and expert support.