Series:	2017
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Voltage - DC Spark Over (Nom):	420V
Impulse Discharge Current (8/20µs):	10000A (10kA)
Tolerance:	±20%
Number of Poles:	2
Fail Short:	No
Mounting Type:	Surface Mount Horizontal
Package / Case:	Disc 8.00mm Tabbed SMD

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Introduction to Gas Discharge Tube Arresters (GDT)

Gas discharge tube arresters (GDT) are electrical surge protection devices used to protect components and systems, such as computers, from induced transients or energy surges. GDTs act as low voltage switches that disconnect the affected equipment from the power source when the energy surges reach their maximum level of tolerance.

What are Gas Discharge Tube Arresters (GDT)?

GDTs are tubular devices filled with a gaseous mixture that contains an inert gas, such as nitrogen, and metal or a metal compound. The gas is ionized when the electrical discharge is greater than the tolerance level of the device, which creates a low resistance pathway for the currents to follow. The GDTs can then absorb the energy without damaging the equipment it is protecting.

Applications of Gas Discharge Tubes (GDT)

GDTs are generally used in power systems such as telecommunication networks, data centers, industrial plant, airports, and other sensitive electronic equipment. GDTs are used to protect these systems from voltage surges such as lightning strikes, power outages, and static electricity. GDTs act as proper arc recognition and reduce the risk of power system damage, while also providing an economical protection solution.

Working Principle of Gas Discharge Tube Arresters (GDT)

GDTs work by limiting the current flow through the arresters to a predetermined value. This current flow is called the breakdown current and it is determined by the gap between the two electrodes inside the arrester. When subjected to an overvoltage, the gap is bridged by the ionized gas inside the tube, allowing the majority of the surge to be discharged through the GDT.The ability of the GDT to protect the equipment is determined by its combination of breakdown voltage, voltage tolerance, peak inverse voltage (PIV), pulse energy capacity, and the magnitude of the discharge currents that flow through it.

Conclusion

Gas Discharge Tube Arresters (GDT) are an effective tool for protecting electronic equipment from electrical surges and overvoltage. GDTs are economical, reliable, and easy to install, making them a popular choice for surge protection applications. Additionally, GDTs can accommodate a wide range of applications and system requirements.

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