ATV30C161J-HF Circuit Protection

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Transient Voltage Suppressors (TVS) are used to protect valuable components from a sudden increase in voltage, often caused by electrostatic discharge, lightning or electrical transients. The ATV30C161J-HF is designed to offer superior ESD protection and performance. This article takes a closer look at the application fields and working principle of the ATV30C161J-HF.

Applications

The ATV30C161J-HF has several primary applications which involve high-speed signal line protection, ESD protection, and board level surge protection for consumer electronics. In particular, it is well-suited for use in automobile products, laptops, tablets, cell phones, and other consumer electronics devices. It is capable of protecting multiple signals and is suitable for applications that require fast response times.

The device has an ultra-low capacitance of 3.3pF to any line and an operating voltage of up to 25V. It is rated for ESD protection of up to 8kV for Human Body Model (HBM) and 2.5kV for Contact Discharge. It is also rated for over-voltage protection up to 11V, making it suitable for use in automotive and heavy-duty applications.

Working Principle

The ATV30C161J-HF is a TVS diode. It is designed to protect against high-voltage transients, such as electrostatic discharge. The working principle of the device is based on the Avalanche Breakdown Effect. This effect occurs when an electric field is applied to a p-n junction, causing the minority carriers to be accelerated in the electric field. As these carriers gain energy, they collide with the atoms in the lattice, creating more electron-hole pairs. This process of increasing the number of charges continues until it reaches a critical point, at which point an avalanche breakdown is created.

When an external voltage transient is applied, the device clamps the voltage to its maximum rating and absorbs the excess energy generated. This allows it to protect sensitive components from dangerous levels of voltage. The device also has a built-in diode that limits the discharge current to a safe level. This helps to protect components from over-current damage.

Conclusion

The ATV30C161J-HF is a TVS diode designed for fast protective action against high-voltage transients. It is suitable for use in consumer electronics, automobile applications, and other applications requiring fast response times and ESD protection up to 8kV. Its working principle is based on the Avalanche Breakdown Effect, which ensures that voltage is clamped at a safe level and that components are protected from over-current damage.

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