2797971

Series:	--
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Obsolete
Moisture Sensitivity Level (MSL):	--
Voltage - DC Spark Over (Nom):	110V
Impulse Discharge Current (8/20µs):	10000A (10kA)
Tolerance:	--
Number of Poles:	2
Fail Short:	No
Mounting Type:	--
Package / Case:	--

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Gas Discharge Tube Arresters (GDT)

Gas Discharge Tube Arresters, also known as GDT, are primarily used in electrical applications where overvoltage or voltage surge protection is required. GDTs are composed of an electrode pair arranged within a gas-filled discharge tube, and they have the ability to protect sensitive electrical equipment from overvoltages.

Overview

GDTs were first developed in the 1920s and have since become an essential component in many electrical systems. They are most commonly used to protect sensitive components and circuits from potential damage due to voltage surges. Overvoltage events can occur due to causes such as lightning, electric arcs, switching transients, and capacitive coupling, and it is essential that electrical systems be equipped with a protection device designed to minimize the risk of such events. GDTs are ideal for this purpose because they are able to rapidly handle large overvoltage transients that may cause electrical components to fail if not properly addressed.

Working Principle of GDT

A GDT is a passive device composed of one or two electrodes placed within a gas-filled discharge tube. When an overvoltage condition occurs, the GDT provides a path for the current to be dissipated. This is accomplished by gas molecules in the discharge tube that become ionized when the voltage exceeds a certain level. The ionized gas molecules form a conductive path that allows the current to flow and thus dissipate the energy of the overvoltage.

Applications of GDT

GDTs are used in a variety of applications, including telecommunications, industrial control systems, automotive electronics, medical equipment, and military systems. They are commonly used to protect sensitive components from electrical overloads caused by lightning strikes, electric arcs, capacitive coupling, and other voltage surges. GDTs can also protect against short duration high-voltage transients that can cause permanent damage to other components, such as capacitors and inductors.GDTs are relatively inexpensive and easy to install, making them a cost-effective solution for providing protection in a wide range of applications. Additionally, GDTs are relatively small and lightweight, making them suitable for applications where physical size and weight are important considerations.

Conclusion

Gas Discharge Tube Arresters (GDTs) are a type of electrical component used for protection against overvoltages. GDTs are composed of an electrode pair in a gas-filled discharge tube and are capable of handling large transients caused by lightning, electric arcs, and capacitive coupling. They are commonly used in telecommunications, industrial control systems, automotive electronics, medical equipment, and military systems. GDTs are relatively inexpensive and easy to install, making them a cost-effective solution for providing protection in a wide range of applications.

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