The 38M4020AA1212 Ferrite Toroid Core, from Fair-Rite, is a crucial component for numerous electronic circuits. Supreme Components International is an authorised distributor of Fair-Rite, ensuring you receive genuine, high-quality parts. This toroid core, made from Material 38, offers excellent magnetic properties for applications such as inductors, transformers, and EMI/RFI filters. Its toroidal shape provides a closed magnetic path, minimizing flux leakage and maximizing inductance. The core's dimensions are 12.7mm outer diameter, 7.62mm inner diameter, and 4.75mm height. Choose this core for its reliable performance and consistent characteristics in your electronic designs. Material 38 is a versatile material suitable for a broad range of frequencies. Trust Supreme Components International for all your Fair-Rite component needs.