ATV06B131J-HF Circuit Protection

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TVS (Transient Voltage Suppressor) diodes help protect circuits from surge voltages, typically seen during lightning strikes and electrostatic discharge (ESD) events. The ATV06B131J-HF is a typical variant of TVS diode designed for use in higher power applications providing protection against transient overvoltages up to 3kV. In this document we will look at the ATV06B131J-HF application fields and working principles.

Introduction

The ATV06B131J-HF is a 650W Bi-Directional Unidirectional Transient Voltage Suppressor (TVS) diode. It is designed to protect electronic circuits from over-voltage transients caused by a number of events, such as electrostatic discharge (ESD), electrical fast transients (EFT) and lightning. It features a low clamping voltage, low leakage current, and a high surge current rating.

Applications

The ATV06B131J-HF is specifically designed for use in sensitive applications, where higher power protection is needed from transient overvoltages. Its main applications include power supplies, UPS systems, power conversion systems, and motor control systems. It also can be used to protect data lines, such as USB, in applications where data transfer is required despite transient overvoltage conditions.

Structure

The ATV06B131J-HF incorporates a Zener diode with a tungsten-doped PN junction. This tungsten junction is called the termination layer, and the top and bottom of the layer are connected to the anode and cathode, respectively. The termination layer serves as a barrier to overvoltage conditions, allowing voltage to flow through the device without exceeding the maximum voltage capacity.

Operation

The ATV06B131J-HF works by clamping excess voltage to a safe level when triggered. When an overvoltage event occurs, the voltage at the termination layer rises and triggers a Zener diode action. This causes current to flow through the device and out to the ground circuit, preventing the device from being damaged. The device will then reset itself once the surge has passed.

Conclusion

The ATV06B131J-HF is a powerful TVS diode designed for applications requiring high power protection from transient overvoltages. It is most commonly used in power supplies, UPS systems, power conversion systems, and motor control systems, as well as for protecting data lines such as USB. Its Zener diode and tungsten-doped PN junction structure works to limit the voltage to a safe level, preventing damage to the device.

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