SA7.5AHB0G

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Transient Voltage Suppressors (TVS) are devices used to protect electronic equipment from electrical transients, which are otherwise known as electrical disturbances or surges. The SA7.5AHB0G is a surface-mount, uni-directional, low-capacitance silicon transient voltage suppression diode (TVS). In this article, we will explore the application fields and working principle of the SA7.5AHB0G.

Application Fields

The SA7.5AHB0G is a unidirectional silicon avalanche diode formed by diffusing Zener and avalanche junction in the same monolithic structure. This device can be used for a wide variety of low voltage transient protection applications. It is ideal for ESD, surge, and overvoltage protection in automotive, consumer, and communications applications. The low capacitance (0.3pF) makes it an ideal choice for protecting high-speed data lines that require low capacitance.

The SA7.5AHB0G is characterized for repetitive peak pulse power dissipation of 8.0W at 75°C and clipped sinewave surge current of 5.0A peak. The device is rated for a 7.5A peak pulse current and a maximum breakdown voltage of 5.2V at 75°C. It is available in the form of a SOD-123 package and is RoHS compliant.

Working Principle

The SA7.5AHB0G is based on avalanche breakdown technology, which is a type of breakdown mechanism that occurs when electrons travel through a material at very high velocities and collide with other atoms to form electron-hole pairs. This creates an avalanche effect that can cause a sharp increase in current flow. This device uses a Zener diode to limit the avalanche current and ensure a uniform breakdown voltage.

When a voltage exceeding the breakdown voltage is applied across the device, a majority of the charge carriers (electrons or holes) will move to the other P-N junction. This causes the electrons to cross the barrier at the P-N junction, resulting in a rapid surge of current, which is known as a Zener breakdown voltage. The current peaks, then the diode turns back to its normal state, at which point it is able to limit the amount of current flowing through it.

The SA7.5AHB0G also features low-capacitance, which allows it to protect high-speed data lines. This is because the low-capacitance property of the device allows it to respond quicker to fast transients and voltage spikes. This ensures that the device is able to protect the electronic equipment from damage caused by electrical transients.

Conclusion

The SA7.5AHB0G is an ideal choice for protecting electronics from electrical transients and voltage surges. Its low capacitance and repetitive peak pulse power dissipation make it ideal for protecting high-speed data lines and other electronics that require low capacitance protection.

The device is available in the form of a SOD-123 package and is RoHS compliant. The device is suitable for automotive, consumer, and communications applications. Its Zener and avalanche junction in the same monolithic structure make it a reliable solution for protecting electrical equipment from electrical transients.

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