The Fair-Rite 3061990861 is a high-quality Ferrite Toroid Core, available through Supreme Components International, an authorised distributor of Fair-Rite components. This core is made from Material 61, known for its excellent performance in a wide frequency range. Its dimensions include an outer diameter (OD) of 9.9mm, an inner diameter (ID) of 6.35mm, and a height (H) of 3.18mm. Toroid cores are commonly used in applications such as inductors, transformers, and EMI/RFI filters. The toroidal shape provides a closed magnetic path, minimizing flux leakage and improving efficiency. The 3061990861 is suitable for various electronic circuits and offers reliable performance. Choose Supreme Components International for your Fair-Rite component needs.