1SMA4758-GT3TR

1SMA4758-GT3TR is classified as a single-Zener diode. This type of diode is designed and used to protect devices and circuits from overvoltage. It basically functions as a form of voltage-limiting diode when it is reversed biased, and in a forward bias, it acts as a regular diode. The reverse voltage breakdown voltage of a single Zener diode such as the 1SMA4758-GT3TR typically ranges between 3.3 V to 200 V.

The 1SMA4758-GT3TR application field includes power supplies, electrode PFC rectifiers, bridges, lighting controllers, automotive, DC-DC converters, industrial, personal computer and office electronics, and power distribution. This diode is also capable of ultradissipating high power, so it is also used to protect LED and CFLs in lighting applications.

The working principle of a single-Zener diode is based on the avalanche breakdown effect. That is, when the voltage applied to the diode reaches a certain level, the diode begins conducting in the reverse direction. This phenomenon is reverse current, and it is generated when the reverse voltage increases to the Zener voltage. Under this condition, an avalanche breakdown occurs and the diode will allow a significant amount of current to flow through it.

This then creates a voltage regulator that can reduce voltage fluctuations in the circuit, protecting other components in the circuit against potentially damaging voltage. As an example, when the negative voltage applied would easily destroy the components, the 1SMA4758-GT3TR protects them by limiting the voltage applied to the components.

In order to achieve higher protection levels, the 1SMA4758-GT3TR diode also has additional features. These include temperature compensation, high temperature overload protection, and overload protection. The overload protection feature can prevent damage to the device or the circuit when a high reverse voltage or high forward current is applied.

The 1SMA4758-GT3TR is one of the most commonly used single-Zener diodes on the market today. Its applications have a wide range and its features offer significant protection to any circuit. It is able to accurately regulate the voltage and hence protect the circuit and its components from any potential damage. It is an essential diode used by many electronic engineers in the world.