This Fair-Rite 7878400121 Toroid Core is a crucial component for electronic circuit design, offering excellent performance in applications such as inductors, transformers, and filters. Supreme Components International is an authorised distributor of Fair-Rite, ensuring you receive genuine, high-quality components. The core's Material 78 provides specific magnetic properties, enabling efficient energy storage and minimizing core losses. Its dimensions (4.75mm OD, 2.36mm ID, 1.52mm H) allow for compact designs. This toroid core is particularly effective in reducing electromagnetic interference (EMI) and radio frequency interference (RFI). Trust Fair-Rite and Supreme Components International for reliable electronic components.