The Gaz Discharge Tube (or GDT) are passive components made of two or three electrodes in an enclosure filled with a (non-radioactive) rare gas at a controlled pressure. The enclosure is a ceramic tube with its ends closed off by metal caps that also serve as electrodes. Their main use is to protect telecommunications lines, but other uses are possible.
The main electrical characteristics defining a gas discharge tube are:
CITEL gas discharge tubes are available in several mechanical configurations to adapt to the desired set-up:
CITEL proposes a full line of gas discharge tubes to meet most configuration needs and specifications found on the market: