SA28A Circuit Protection

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The Transient Voltage Suppressor (TVS) diode is a specialized form of diode typically used to protect sensitive electronics from overvoltage transients caused by lightning, power networks, or electrostatic discharge. The SA28A is a popular TVS diode available in a variety of configurations and packages, and is used in a wide range of applications. This article will take a closer look at the SA28A, including its application fields, working principle, and advantages.

The SA28A series of TVS diodes is available in a range of popular packages such as SMA, SOD-123, and SOD-323. It offers a wide range of clamping voltage values from 6V to 91V, and is capable of handling up to 24A of surge current. This makes it suitable for use in a variety of applications, from consumer electronics to automotive circuitry.

The SA28A is designed to protect sensitive electronics by diverting or limiting overvoltage transients. It consists of a junction of two p-n regions, one of which is connected to an internal protection resistor. When an overvoltage transient is detected, the resistor will limit the current that can flow from the supply to the device, thus protecting it from potential damage caused by the overvoltage. The clamping voltage values of the SA28A determine its protection capabilities, with higher clamping voltage values providing higher levels of protection.

The SA28A also offers higher reliability compared to other TVS diodes due to its superior design and construction. It is designed to withstand extreme temperatures and is rated for up to 1000V. It has also been designed with surge suppression in mind, providing line transients up to 30V with an energy rating of up to 3.5A. This makes it well-suited for a variety of application fields, such as consumer electronics, LCD panels, digital cameras, and automotive circuitry.

In addition to its superior protection capabilities, the SA28A offers a range of advantages compared to other TVS diodes. It features a low capacitance value, which reduces the effect of the diode on the system\'s signal integrity. It also features a low leakage current, ensuring that there is no additional load on the system. Finally, its small and lightweight package makes it easy to incorporate into a design, offering a cost-effective solution.

The SA28A is an ideal solution for protecting sensitive electronics from overvoltage transients. It is available in a wide range of packages and clamping voltage values, making it suitable for a variety of applications. Its superior design and construction make it highly reliable, offering excellent protection capabilities. Finally, its low capacitance, low leakage current, and small package make it a cost-effective solution for any design requiring overvoltage protection.

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