The FAIR-RITE 4078377511 is a high-quality Toroid Core, manufactured using the company's specialized 78 material. This core is designed for optimal performance in a variety of electronic applications, including inductors, transformers, and filters. Its toroidal shape provides excellent magnetic properties and minimizes electromagnetic interference (EMI). Supreme Components International is an authorised distributor of FAIR-RITE components, ensuring that you receive genuine products with full manufacturer support. Trust Supreme Components International for all your electronic component needs. Benefit from our extensive inventory, competitive pricing, and expert technical support. This ferrite core is a reliable choice for demanding applications.