The FAIR-RITE 9578283402 is a Ferrite Toroid Core crafted from high-quality NI-ZN material. This core is engineered for optimal performance in inductor applications, providing excellent magnetic properties and minimizing energy loss. Supreme Components International is an authorised distributor of FAIR-RITE, ensuring you receive a genuine and reliable component. This toroid core is suitable for a wide range of electronic circuits, including power supplies, filters, and signal processing circuits. Its toroidal shape offers superior magnetic field containment compared to other core shapes. Choose the 9578283402 for your inductor design needs and experience enhanced efficiency and performance. Supreme Components International provides full support and documentation for this product.