The 5977001701 is a high-quality Toroid Core manufactured by Fair-Rite, a leading name in ferrite technology. This core is made from Fair-Rite's popular 77 material, 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 chokes due to their efficient magnetic flux containment. The 5977001701 offers superior performance in applications requiring high inductance and low core loss. Trust Supreme Components International for all your electronic component needs.