SM5S28HE3/2D

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Transient voltage suppressors (TVS) are widely used for protection of electronic circuits in many applications. Specifically, SM5S28HE3/2D is a bidirectional unidirectional voltage suppressor that is designed for protecting sensitive electronic components from electrostatic discharge (ESD) events. This article outlines the application field of SM5S28HE3/2D as well as its working principle.

Application Field

SM5S28HE3/2D can be used in a wide variety of applications, ranging from laptop and computer motherboards to industrial control systems and automotive circuits. The device is able to withstand ESD events up to 8kV without damage, making it suitable for high-voltage applications. It also features a low leakage current design, which ensures that there will be minimal heat dissipation. The device is also able to quickly respond to high current transients, making it suitable for use in applications with high levels of electrical noise.

Working Principle

SM5S28HE3/2D uses a diode array to protect the circuit from ESD events. The device consists of a number of back-to-back Zener diodes connected in parallel. When there is an overvoltage on the circuit, the Zener diodes will conduct and clamp the voltage to a safe level. The device also features a reverse ESD protection diode, which prevents current from flowing backwards from the protected load and into the device. The low capacitance of the device also ensures that it has a fast response time, making it suitable for use in high speed applications.

In addition to ESD protection, SM5S28HE3/2D can also provide protection against voltage transients. The device can be used to limit the magnitude of voltage spikes on the input of a circuit, ensuring that the connected components are not damaged by any overvoltage events. The device also features a low reverse leakage current, which means that the device will not draw any power when it is in operation. This makes the device suitable for low power applications.

Conclusion

SM5S28HE3/2D is a bidirectional unidirectional voltage suppressor that is designed for protecting sensitive electronics from ESD events. The device can also provide protection against voltage transients, making it suitable for many different applications such as laptop and computer motherboards, industrial control systems, and automotive circuits. The device is also able to quickly respond to high current transients, making it suitable for use in high speed applications. The device features a low capacitance and low leakage current design, making it suitable for low power applications.

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