The 2661665702 is a high-quality Ferrite Toroid Core manufactured by Fair-Rite. Supreme Components International is an authorised distributor of Fair-Rite components, ensuring you receive genuine products. 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 16.6mm, an inner diameter (ID) of 9.65mm, and a height (H) of 6.35mm. This toroid core is commonly used in applications such as inductors, transformers, and noise filters. Its toroidal shape provides excellent magnetic flux containment, minimizing electromagnetic interference (EMI). Choose this core for reliable and efficient performance in your electronic designs.