SA7.0HE3/73

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A TVS diode (also known as a transient voltage suppressor) is a semiconductor device designed to protect electronics from voltage spikes. The SA7.0HE3/73 is a popular device that is commonly used in applications that require a robust power protection solution. Here, we\'ll explain the application field and working principle of the SA7.0HE3/73.

Application Field

The SA7.0HE3/73 TVS diode is commonly used for applications that require a high-current protection solution. This includes automotive, industrial, and consumer electronic applications. The device features a 7V VC breakover voltage and is rated for 73A of working current. It also has a high peak pulse power of 200W and a surge withstand capability of 4500A.

One of the features that makes this device so attractive for high-current applications is the fact that it has a fast response time. This allows it to quickly react to any voltage spikes that may occur, which helps to protect electronics from any possible damage.

Working Principle

The working principle of the SA7.0HE3/73 is quite simple. It consists of two main components, a diode and a resistor. The diode is designed to limit the amount of voltage that can enter the device. The resistor is then placed in series with the diode and is designed to limit the current. When a voltage spike occurs, the diode will drop the voltage and then the resistor will limit the current. This helps to protect any connected electronics from any potential damage.

In addition to limiting voltage spikes, the SA7.0HE3/73 also helps to reduce transients during power switch-on and switch-off. During the power on phase, it limits the inrush current and helps to prevent the circuit from blowing. During the power off phase, it absorbs any stored energy and limits the flyback voltage, which prevents any back-flow current.

Conclusion

The SA7.0HE3/73 is a popular TVS diode that is commonly used for high-current protection applications. It has a fast response time and is rated for 73A of working current, 200W of peak pulse power, and 4500A of surge withstand capability. The device works by limiting voltage spikes and reducing transients during the power switch-on and switch-off phases. This makes it an ideal choice for a variety of applications where robust power protection is required.

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