The Fair-Rite 431173951 is a high-quality Ferrite Toroid Core, designed for a wide range of applications including inductors, transformers, and EMI filters. Supreme Components International is an authorised distributor of Fair-Rite, ensuring you receive genuine components. This core is made from Material 73, known for its high permeability and low core loss. Its dimensions are: Outer Diameter (OD) 11.7mm, Inner Diameter (ID) 7.3mm, and Height (Ht) 5.1mm. The toroid shape provides excellent magnetic flux containment, minimizing external interference. This component is suitable for use in power supplies, signal processing circuits, and other electronic devices where efficient energy storage and noise reduction are critical. Choose Fair-Rite for reliable performance.