The FAIR-RITE 5977001301 is a Toroid Core made from 77 Material. Supreme Components International is an authorised distributor of FAIR-RITE electronic components, ensuring you receive genuine and reliable products. This ferrite core is designed for applications requiring a specific inductance factor and high performance. Its toroidal shape provides excellent magnetic flux containment, minimizing electromagnetic interference. The core's dimensions are A = 13.0 mm (outer diameter), B = 7.5 mm (inner diameter), and H = 5.0 mm (height). The 77 material offers a good balance of permeability and core loss, making it suitable for a wide range of frequencies. Applications include inductors, transformers, and chokes.