Zirconia ceramic ferrules are the top pick because they last long and do not change with heat in fiber optic networks. Pick the right ferrule type (PC, UPC, APC) for your network to help it work better. Use the. Two common ferrule materials–zirconia ceramic and lower-cost plastic composites–provide comparable performance and achieve compliance with TIA/EIA-568-B. 3 requirements (Insertion Loss <0. However, the ability of each connector type to maintain physical contact can differ. However, with the development of technology, ceramic materials were found to have obvious advantages in terms of precision, stability, and durability, gradually becoming the mainstream. In fiber optic connectors, the fiber end being connected is encased in a 2. 5 mm ferule, typically made of.