SG300

Series:	SG
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Voltage - DC Spark Over (Nom):	300V
Impulse Discharge Current (8/20µs):	1000A (1kA)
Tolerance:	--
Number of Poles:	2
Fail Short:	No
Mounting Type:	Surface Mount
Package / Case:	1812 (4532 Metric)

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Introduction to SG300 Application Field and Working Principle

SG300 is a Gas Discharge Tube (GDT) arrester, which is commonly used in various applications such as telecommunications and power distribution systems. Its unique design and technology make it a reliable choice when it comes to protecting against electrical and static surge arrester applications.

Gas Discharge Tube Arresters

Gas Discharge Tube Arresters (GDT) are devices used in power distribution and communication systems to reduce normal and transient overvoltages. GDTs are designed to provide instantaneous protection against a wide range of damaging surges and transients. GDTs are an integral part of the surge protection systems used in power and communication systems.GDTs are designed to contain a noble gas in a sealed container. When the voltage exceeds the design limit of the GDT, it ionizes the noble gas and establishes a low resistance path for current to flow, which protects the equipment by diverting it from hazardous voltages. The GDT then quickly recovers and remains ready to activate its protection function in the event of another surge.GDTs are made of metals or dielectric materials and can be used in areas where space is limited. They are available in various sizes, shapes and voltage ratings and are typically mounted in a device box or on a board.

SG300 Application Field

SG300 GDTs are used in a variety of applications, including power supply systems, industrial control systems, communications systems, ground antenna systems, and medical systems. They are also used in high voltage switching circuits such as lightning protection systems. In these applications, the GDTs are used to prevent damage caused by lightning and other transient overvoltages. In power transmission and distribution systems, GDTs are used to protect substation equipment from short circuits, network unbalance, and other power system transients such as surges. In communication systems, GDTs are used to protect data transmission lines, equipment, and power supplies from damage caused by electromagnetic interference.

SG300 Working Principle

The SG300 gas discharge tube is designed with a noble gas-filled tube that can withstand a wide range of voltages. When a surge or a transient voltage exceeds the design limit of the valve, the noble gas ionizes, allowing a low resistance path for current to flow. This diverts the excessive energy away from the protected equipment. The gas will quickly recover to its original state, ready to activate the protection function again, if another surge occurs.The SG300 GDT works by establishing an electrically conductive path for current when triggered by an overvoltage or surge. This path crosses a combination of metals and dielectric layers, depending on the application. The number and thickness of the layers determine the voltage rating and the amount of current that can flow through the tube.The SG300 GDT is designed to operate in a range of temperatures from -40℃ to +55℃ and can withstand shock, vibrations and accelerated aging. It also features low contact resistance, excellent mechanical strength and reliable operation.

Conclusion

The SG300 Gas Discharge Tube is a reliable and durable GDT that is designed to protect power supplies, communication systems and other sensitive equipment from transient overvoltages. Its unique design, features and advanced technology provide reliable protection from damages caused by surges and transients.

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