The 9677353509 is a high-quality Toroid Core manufactured by Fair-Rite, a leading name in ferrite technology. This core is made from Fair-Rite's 77 material, known for its specific magnetic properties and suitability for a wide range of applications. As an authorised distributor, Supreme Components International ensures you receive a genuine Fair-Rite product. Toroid cores are commonly used in inductors, transformers, and chokes due to their efficient magnetic flux containment. The 9677353509 offers excellent performance characteristics and is designed to meet demanding requirements. Trust Supreme Components International for all your electronic component needs.