The FAIR-RITE 431178281 is a Ferrite Toroid Core, a crucial component in many electronic circuits. Supreme Components International is an authorised distributor of FAIR-RITE, ensuring you receive genuine, high-quality parts. This core is made from Material 78, known for its specific magnetic properties. Its dimensions include an outer diameter (OD) of 11.7mm, an inner diameter (ID) of 7.3mm, and a height (H) of 4.7mm. Toroid cores are commonly used in applications such as inductors, transformers, and noise filters due to their efficient magnetic flux containment. Choose FAIR-RITE for reliable performance.