Ferrites are high electrical resistance, magnetic, and ceramic materials constructed from a mix of metallic oxides, often including Iron (Fe), Zinc (Zn), Manganese (Mn), Nickel (Ni), Cobalt (Co), Barium (Ba), and Strontium (Sr). These metallic oxides exhibit magnetic behavior that allows for their use in RF circuits as inductors, transformers/baluns, isolators, circulators, phase shifters, chokes, ..