SLD8S28A

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TVS - Diodes

TVS (transient voltage suppressor) diodes are one of the most important components used to protect electronic and electrical circuits from destructive electrical transients – a very important role in ensuring the robustness and reliability of electronics. As the name implies, these devices are designed to protect electronics from high-voltage transients, but their functionality does not stop there. Beyond just protection, TVS diodes are also used for many other purposes. One of these is a device named SLD8S28A.

SLD8S28A Application Field

The SLD8S28A is a transient voltage suppressor specifically designed for certain semiconductor applications. It is a voltage clamping device with a voltage ratings up to 50V. It provides protection against both ESD (electrostatic discharge) and transient overvoltage events, such as those caused by lightning. The device can be used in various semiconductor applications such as memory modules, LCDs, data lines, and motor control units among others.

SLD8S28A Working Principle

The working principle of the SLD8S28A is based on a Zener diode configuration. This configuration includes two aligned and inter-connected Zener diodes. When there is an electrical transient on the device’s circuit, the two paths start conducting and the stored energy starts dissipating. The transient voltage is then clamped between the two diodes and is directed along the lower Zener diode, thus protecting the circuit from damage. The device features a low capacitance, allowing it to operate even at high frequencies, up to 5GHz.

SLD8S28A provides two additional features for providing better protection. The first one is a low resistance junction between the two Zener diodes. This junction allows a sharper clamping of the transient voltage. The second additional feature is the fact that the two Zener diodes are very closely matched, optimizing the response of the device to transient overvoltages.

The device is also very compact and features an operating temperature range from -55°C to 125°C. The device is also available in some other versions that provide eithe lower or higher breakdown voltage levels.

Conclusion

The SLD8S28A is a transient voltage suppressor designed to protect electronic circuits against electrostatic discharge and transient overvoltage events. Its protection ability is based on the Zener diodes configuration, coupled with other additional features to increase its protecting capabilities. Its working principle, applications and features where discussed in detail in this article.

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