BZG05C18-HE3-TR

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Diodes - Zener - Single

The BZG05C18-HE3-TR is a widely used single Zener diode, meaning it is made up of a single PN junction in the device. It is smaller, simpler, and easier to implement than other types of diode, such as Schottky, light-emitting, or avalanche. As such, it is ideal for providing protection or assistance in relatively small-scale device or circuit applications.

Application Fields

BZG05C18-HE3-TR is typically used to protect circuits from high-voltage or current pulses. It can also be used as means of voltage regulation, thermal protection, and to provide reference voltages for current sources and logic gates. It is typically used in small-scale applications where low power consumption and space avoidance are important, such as in the automotive, medical, and military industry.

Working Principle

A Zener diode works by undergoing a special type of breakdown, called \'Zener breakdown,\' when the applied voltage is greater than the Zener voltage, Vz. This breakdown then produces an avalanche about the Zener voltage. The number of carriers created in the space around the junction increases exponentially, significantly increasing the conductivity of the junction, thus allowing current to flow in either direction of the applied voltage.

The Zener diode also uses the valence band in the depletion layer of the diode to function. This valence band is the highest energy state in the silicon band gap and prevents the diode from emitting most of the carriers generated during current flow. This in turn prevents the diode from self-heating while in use, allowing for much higher currents to pass through the junction than other types of diode.

Conclusions

In conclusion, the BZG05C18-HE3-TR is a single Zener diode, which is ideal for providing protection or assistance in relatively small-scale device or circuit applications. It has a wide range of applications, from voltage regulation to thermal protection and even current source reference. It works on the principle of Zener breakdown and a valence band in the depletion layer, which allows for efficient current flow without the risk of self-heating.

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