The Fair-Rite 444177081 is a high-quality Ferrite Toroid Core, perfect for a wide range of electronic applications. Supreme Components International is an authorised distributor of Fair-Rite components, ensuring you receive genuine products. This core is made from Material 44, known for its excellent performance characteristics in suppressing electromagnetic interference (EMI) and creating efficient inductors and transformers. Its compact dimensions (4.17mm OD, 2.31mm ID, 1.78mm H) make it suitable for space-constrained designs. Use this toroid core in power supplies, filters, and other circuits where high permeability and low core loss are required. Benefit from Fair-Rite's reputation for quality and reliability when you choose this ferrite core.