The Fair-Rite 5943000221 is a Ferrite Toroid Core designed for optimal performance in a range of electronic circuits. Constructed from Material 43, this core provides excellent magnetic properties for applications such as power filtering, signal filtering, and inductive components. Its toroidal shape ensures efficient magnetic flux containment, minimizing electromagnetic interference (EMI). The core's dimensions are 9.4mm outer diameter (OD), 4.75mm inner diameter (ID), and 3.18mm height (H). Supreme Components International, as an authorized distributor of Fair-Rite, guarantees the authenticity and quality of this product. This ferrite core is well-suited for use in transformers, inductors, and chokes, offering reliable performance and consistent results. Choose the 5943000221 for your next project requiring a high-quality ferrite toroid core.