Bourns® GDTs are designed to provide long, stable impulse life with a high level of lightning protection. The proprietary “Switch-Grade” fail-short design provides unparalleled thermal protection of the GDT during AC faults. The GDT provides low loss protection to broadband applications due to low capacitance and common chamber design. The “mini” tube is surface mount and minimizes board space requirements. Bourns® GDTs have undergone extensive UL reliability testing and are listed for use without an air backup gap for high reliability communications protections.