The 5977001121 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 versatile performance characteristics. As an authorised distributor of Fair-Rite electronic components, Supreme Components International ensures that you receive a genuine product backed by Fair-Rite's reputation for excellence. Toroid cores are widely used in inductors, transformers, and other electromagnetic devices due to their efficient magnetic flux containment. The 5977001121 offers a reliable solution for applications requiring stable inductance and minimal electromagnetic interference. Trust Supreme Components International for all your Fair-Rite component needs.