The FAIR-RITE 6278420121 is a high-performance Toroid Core made from NI-ZN ferrite material. This core is designed for applications requiring efficient magnetic flux containment, such as inductors, transformers, and chokes. Its dimensions include a 12.7mm outer diameter, a 7.62mm inner diameter, and a 4.75mm height. The NI-ZN ferrite composition provides excellent performance at higher frequencies, minimizing core losses and maximizing efficiency. As an authorized distributor of FAIR-RITE components, Supreme Components International guarantees the authenticity and quality of this product. Choose the 6278420121 for reliable and consistent performance in your electronic designs. This toroid core is suitable for a wide range of applications.