LS431050 Discrete Semiconductor Products

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The LS43105 is one of the simplest and most common of the SCR (Silicon Controlled Rectifier) modules. They are ideal for use in switch mode power supplies, DC motor speed control, and battery charging/discharging. In this article we will discuss how the LS43105 works and its applications.

Overview

SCR modules are solid state switching devices that are used to control the flow of electrical current. They are the most precise, solid state components available for switching today. SCR modules, like the LS43105, contain a semiconductor material and an internal gate circuit. The semiconductor material allows the current to flow in one direction only, while the internal gate circuit controls when the current flows. The LS43105 features a blocking voltage of 400V, reverse blocking voltage of 200V and a maximum current rating of 43A.

Working Principle

When the gate circuit of the LS43105 receives a short voltage pulse, the semiconductor material switches on and allows current to flow. When the voltage pulse is removed, the SCR type module simply turns off and blocks all current from flowing. This allows current to be turned on or off very quickly, making these devices ideal for fast, precise switching. The LS43105 also has a built-in crowbar circuit that helps protect the electrical device that it is connected to from excess current.

Applications

The LS43105 is most commonly used in switch mode power supplies and DC motor speed control. The precise feedback control of the LS43105 makes it ideal for use in such applications. The LS43105 is also suitable for battery charging and discharging applications. With its blocking voltage of 400V and reverse blocking voltage of 200V, the LS43105 is perfect for higher voltage applications. Additionally, the internal crowbar circuit helps protect the electrical device that is connected to the LS43105 from excess current.

Conclusion

The LS43105 is one of the most popular SCR modules available today. Its precise control and blocking voltage of 400V makes it ideal for switch mode power supplies, DC motor speed control, and even battery charging and discharging applications. The internal crowbar circuit also protects electrical devices from excess current. For these reasons, the LS43105 is one of the most widely used SCR modules in the industry.

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