As the demand for high-speed, high-frequency, and environmentally sustainable PCBs grows, understanding these materials becomes critical for designers and engineers.The seminar covers high-performance materials like PTFE-based laminates, ceramic-filled composites, liquid crystal polymers (LCPs), and organic alternatives such as biodegradable substrates, conductive polymers, and natural fiber composites. The session also examines how these materials impact signal integrity, thermal management, manufacturability, and PCB design costs.