Gas Discharge Tube Arresters (GDT) are available at Tenco Electronics.A gas-filled tube, also known as a discharge tube, is an arrangement of electrodes in a gas within an insulating, temperature-resistant envelope. Gas-filled tubes exploit phenomena related to electric discharge in gases, and operate by ionizing the gas with an applied voltage sufficient to cause electrical conduction by the underlying phenomena of the Townsend discharge.Tenco offers inventory, pricing, & datasheets for Gas Discharge Tube Arresters (GDT). To know more, please view our large section of Circuit Protection -Gas Discharge Tube Arresters (GDT) below.