SM8S26ATHE3/I

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TVS (Transient Voltage Suppressor) diodes are an important kind of electronic components since they provide protection in high voltage cases. The SM8S26ATHE3/I is one such TVS diode and it is used to protect electronic devices from voltage transient events. This article provides an overview of its application field and details on its working principle.

What is the SM8S26ATHE3/I?

The SM8S26ATHE3/I is a TVS diode developed by Semtech. It is a part of their Low capacitance and low clamping voltage range and is designed for ESD protection of high speed datalines such as USB and USB-C applications. The device is also suitable for protecting low voltage (LV) digital signals, analog signals, and power rails. It is available in the small and compact Low Profile SMA Surface Mount Package and is RoHS compliant.

Application Field of SM8S26ATHE3/I

The SM8S26ATHE3/I is best used for low-voltage applications such as personal computers, mobile phones, and tablets. It provides protection against voltage transients and helps prevent overvoltage damage. It can also be used in other equipment such as medical devices, automotive electronics, and IoT devices that could be susceptible to overvoltage damage. Additionally, the device is frequently used in noise suppression and ESD (Electrostatic Discharge) protection.

Working Principle of the SM8S26ATHE3/I

The SM8S26ATHE3/I is a Zener diode which is designed to protect devices from overvoltage. It works by sensing when the voltage increases above its rated breakdown voltage. Then, it conducts current to ground in order to limit the voltage to a safe level.

When it detects a voltage transient, it quickly transitions from a high impedance to low impedance state and starts conducting current from the power rail to the ground, similar to a normal diode. The SM8S26ATHE3/I has a fast response time in order to suppress such transients and protect the device from overvoltage damage.

In addition, the device has internal capacitance which helps provide ESD protection. When a transient occurs, the capacitance helps store energy which is then discharged in order to absorb the energy from the transient.

Conclusion:

The SM8S26ATHE3/I TVS diode is a reliable device used to protect electronic systems from voltage transients and overvoltage damage. Its unique design provides both ESD protection and voltage clamping capabilities in a small and compact package, making it suitable for a wide range of applications from low voltage digital devices to automotive electronics.

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