The 2644666611 Ferrite Core is a Solid Round core from Fair-Rite. Supreme Components International is an authorised distributor of Fair-Rite components, ensuring authenticity and quality. Constructed from Material 44, this core is designed for optimal performance in a range of applications. Its dimensions include a 6.6mm outer diameter, a 3.3mm inner diameter, and a height of 11.1mm. Ferrite cores are commonly used to suppress electromagnetic interference (EMI) and radio frequency interference (RFI) in electronic circuits. They also serve as essential components in inductors and transformers, enhancing their efficiency and performance. This solid round core offers reliable and consistent performance.