The FAIR-RITE 38M4010AA1212 is a high-quality Ferrite Toroid Core, perfect for a wide range of electronic applications. Supreme Components International is an authorised distributor of FAIR-RITE, guaranteeing you receive genuine components. This core is constructed from Material 38, known for its excellent magnetic properties. Its toroidal shape provides efficient magnetic flux containment, minimizing electromagnetic interference. The core's dimensions are A = 12.1 mm, B = 7.5 mm, and H = 4.8 mm. These precise dimensions ensure compatibility with various circuit designs. Use this core in inductors, transformers, and other magnetic components to enhance performance and reliability. Trust FAIR-RITE and Supreme Components International for your electronic component needs.