The Gas Discharge Tube(GDT) is a protective device which is filled with certain proportion of noble gas, or mixed gas or other discharge media in the space between metal electrodes and metalized ceramics,and then sealed at high temperature to form a single-gap or multi-gap switch type protective device.When the protected circuit or equipment suffers to surge, GDT will change from high impedance state to low impedance state and release the surge energy to reduce the residual voltage of the circuit, and then protect the equipment or humanbody from the hazard of transient overvoltage.

SETsafe | SETfuse GDT product the voltage range 70 to 4500 V,and surgecurrent (@8/20 μs) range 0.5 to 200 kA. It is widely used in the overvoltage protection of signals, power supplies and various ports; safety regulations Certificates include UL, cUL, TUV, and it meets for RoHS & REACH requirements.