The 9677353508 is a high-quality Toroid Core manufactured by FAIR-RITE, a leading name in ferrite components. This core is made from #77 material ferrite, known for its excellent performance characteristics in a wide range of frequencies. As an authorised distributor, Supreme Components International ensures you receive a genuine FAIR-RITE product. Toroid cores are commonly used in inductors, transformers, and filters due to their ability to provide high inductance with minimal flux leakage. This particular core is suitable for applications requiring stable inductance and low core loss. Its toroidal shape allows for efficient magnetic flux containment, reducing electromagnetic interference. Supreme Components International is your trusted source for authentic electronic components.