The Fair-Rite 5977011101 is a high-quality toroid core designed for optimal performance in a wide range of applications. Constructed from Fair-Rite's 77 material, this core provides excellent magnetic properties and is ideal for use in inductors, transformers, and other magnetic components. Its toroidal shape ensures efficient flux containment and minimizes electromagnetic interference. The core's dimensions are A = 11.1 mm, B = 6.35 mm, and C = 4.75 mm. As an authorized distributor of Fair-Rite products, Supreme Components International guarantees the authenticity and quality of this ferrite core. Choose the 5977011101 for reliable and consistent performance in your electronic designs.