GDT (Gas Discharge Tubes) is a good solution for surge protection. The insulation resistance of GDT is over 1GΩ, which achieves low degradation speed and high reliability. Yageo offers different packages including SMD and DIP type GDT. GDT with two-electrode, three- electrode are both available. If you have any inquiries for circuit protection components, please contact with sales team for more information.