V18RA8X2749 Circuit Protection

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TVS - Varistors, MOVs are types of electronic components used to protect electrical circuits from transient overvoltage and surges. The V18RA8X2749 is a Varistor, often referred to as a Transient Voltage Suppressor (TVS). This device is an 18mm radial varistor, constructed from zinc oxide ceramic material, which is encased in a metal oxide varistor shell.The V18RA8X2749 can be used in many types of electrical and electronic applications, ranging from telecom installations, power supplies, security systems, industrial equipment to consumer appliances. It offers excellent surge protection from transient overvoltage, which can be caused by lightning strikes, ESD events, and electrical discharge.Additionally, the V18RA8X2749 is suitable for a wide variety of climates, as it is capable of operating in temperatures ranging from -40°C to +85°C. It is also able to operate in highly humid environments, up to 95% humidity. The V18RA8X2749 also has a low leakage current, making it ideal for sensitive equipment.One of the main features of the V18RA8X2749 is its response time. The V18RA8X2749 has a fast response time, meaning that it can sense and react to surges much faster than many other TVS components. This makes the V18RA8X2749 suitable for applications that require high operational speeds, such as telecom, high-speed computers, and other sensitive equipment.The V18RA8X2749 is also highly reliable, with a long service life. The V18RA8X2749 can handle large surge currents without degrading or burning out. This makes the V18RA8X2749 a wise choice for applications where reliability is critical.In order to understand how the V18RA8X2749 works, it is important to understand the principle of a varistor. A varistor is an electronic component that acts as a voltage-dependent resistor. A varistor is usually constructed from zinc oxide ceramic material, which is encased in a metal oxide shell. When a normal voltage is applied to the varistor, it acts as a very low resistance, allowing for the electrical current to pass through unhindered. However, if an overvoltage surge is applied to the varistor, the metal oxide varistor shell will significantly increase its resistance, which in turn limits the electrical current. By limiting the electrical current, the varistor protects the circuit from damage that could be caused by the overvoltage surge.The V18RA8X2749 is designed with a maximum peak voltage surge threshold of 8kV. This means that it can handle surges up to 8kV in magnitude. The V18RA8X2749\'s surge rating is specified in terms of 8/20 μs, meaning that the maximum voltage surge has a rise time of 8μs and a decay time of 20μs. This makes the V18RA8X2749 suitable for applications that require a high level of surge protection, such as telecom, industrial, and consumer electrical applications.The V18RA8X2749 is also available in a wide variety of models, with different leakage current ratings and maximum peak voltage surge ratings. The maximum peak voltage surge rating of a varistor is usually specified in terms of 8/20 μs. This rating indicates that the maximum voltage surge has a rise time of 8μs and a decay time of 20μs.To summarize, the V18RA8X2749 is an 18mm radial varistor constructed from zinc oxide ceramic material housed in a metal oxide varistor shell. It is a well-suited for many types of electronic applications, including telecom, power supplies, security systems, industrial equipment and consumer appliances. The V18RA8X2749 offers excellent protection from transient overvoltage surge events, with a fast response time and high surge rating. It is also highly reliable and has a long service life. The V18RA8X2749\'s surge rating is specified in terms of 8/20 μs, and it is available in a wide variety of models, with different leakage current ratings and maximum peak voltage surge ratings.

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