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Ceramic gas discharge tube (GDT) is a core component for circuit lightning protection and overvoltage protection, widely used in fields such as communication, power supply, and industrial equipment. At present, the active brands in the market are mainly concentrated in Chinese Mainland and Taiwan. Combining the technical characteristics, product lines and market positioning, the following representative brands can be sorted out:
When selecting ceramic gas discharge tubes (GDT) as circuit protection components, multiple key factors need to be systematically considered to ensure their reliable and effective performance in applications. The following are the core considerations summarized based on design requirements and actual application scenarios:
To judge the quality of discharge tubes (such as gas discharge tubes, varistors, etc.), it is necessary to combine their working principles and common failure modes. Here is a set of original, logically clear, and fluent language judgment methods:
As an important overvoltage protection device (mainly used for lightning and surge protection), discharge tubes have various packaging forms, which mainly depend on their working principles (gas discharge, semiconductor discharge, etc.), power capacity, application scenarios (circuit board level, equipment inlet end, line protection, etc.), and installation requirements. Here are some common and key types of discharge tube packaging:
Gas Discharge Tube (GDT) is a device that utilizes the principle of gas discharge for overvoltage protection, widely used in fields such as communication, power, and security. Its core function is to quickly conduct when overvoltage occurs, clamp the voltage within a safe range, and protect subsequent circuits from damage caused by lightning strikes, electrostatic discharge (ESD), or power surges. Here are the technical details and application analysis:
Gas discharge tube is a device that uses the principle of gas discharge for overvoltage protection, widely used in communication, power, security and other fields. Its core function is to quickly conduct when overvoltage occurs, clamp the voltage within a safe range, and protect subsequent circuits. The following is a detailed classification and technical analysis of gas discharge tubes:
The reasons for generating surges are multifaceted, and surges are a type of spike pulse with high rising speed and short duration. Overvoltage in the power grid, switch ignition, reverse voltage, static electricity, and motor/power supply noise are all factors that cause surges. And surge protectors provide a simple, economical, and reliable protection method for power surge protection of electronic devices.
