SA58A

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SA58A is a kind of transient voltage suppression (TVS) diode, which is used for protecting electronic circuits from high voltage transients. The main use of SA58A is to limit the maximum peak voltage, current and duration of overvoltage transient pulses applied to an electronic circuit. By doing this, the damage from Electrical Overstress (EOS) can be reduced to a great extent.

Typically, a TVS diode is placed between a sensitive electronic component and the external power source. It is designed to act as an uncontrolled short circuit when an overvoltage transient is applied. It is usually connected in parallel (current version) with the sensitive component or the power supply. This allows the current to flow freely through the diode during an overvoltage event, protecting the component or supply from large voltage disturbances.

The working principle of the SA58A is based on the principle of reverse breakdown voltage. It can pass very low level currents (quiescent current) when the applied voltage is below its breakdown voltage, but will become a low-resistance path when the applied voltage exceeds its specified breakdown voltage. When an overvoltage transient occurs, the SA58A will turn into a low-resistance path and clamp the voltage across the protected electronic component to a safe level. As a result, the device protects the component from damage due to overvoltage transients.

The SA58A has a wide range of applications in many different fields. It can be used for protecting sensitive electronic components in industrial and consumer electronic applications such as computers, cell phones, tablets, televisions, and other electronic systems. It is also used in automotive, medical, military, aerospace, and telecommunications applications. It can also be used to protect against voltage overshoots and undershoots in power systems and power supply systems.

In short, SA58A is a highly reliable and cost-effective solution for protecting sensitive electronic systems from overvoltage transients. The working principle of SA58A is based on the principle of reverse breakdown voltage and it carries out its job of protecting the protected electronic component effectively. Its wide range of applications makes it one of the most popular TVS diodes in the market.

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