VLZ22B-GS08 Datasheet/PDFThe VLZ22B-GS08 is a single series Zener diode, with an application field that includes switching, rectification, voltage regulation, signal processing and surge protection. These diodes work by using a reverse voltage greater than the Zener voltage and allowing a low-level current to flow, thus creating a reverse bias breakdown. This allows a current to flow without any light being emitted.
When VLZ22B-GS08 is used as a rectifier, it regulates the flow of the current around a specified voltage level. The main purpose of using a Zener diode, in this case, is to filter out the large frequency AC signal and make the output a constant DC voltage. When it is used as a voltage regulator, VLZ22B-GS08 can provide a long-term steady voltage output, regardless of variations in the input voltage.
The working principle for VLZ22B-GS08 is based on Zener breakdown. An electric field causes an increase in the voltage across the diode and the electrons start to move from highest concentration of electrons to lowest concentration. This causes the electrons to escape from the junction resulting in a heavy current flow from the junction to the ground. This is called a Zener breakdown voltage, which is greater than the normal inverse voltage that can be implemented with a normal forward biased diode.
When the VLZ22B -GS08 diode is used in a voltage regulating circuit, the Zener breakdown allows it to function as a voltage regulator because it conducts the current whenever the voltage crosses the Zener voltage level. The diode will then conduct the current independently, thus maintaining a steady voltage output even with fluctuations in the input voltage.
The VLZ22B-GS08 single Zener diode also finds application in switching applications. When a single Zener diode is connected in reverse direction with the supply voltage, it acts as a switch with low-value voltage threshold. This is mainly because when the input voltage reaches the Zener voltage level, the diode is turned on, and then it allows the current to flow and turn the transistor on.
Finally, VLZ22B-GS08 can be used for surge protection applications. The Zener breakdown voltage protects the device from over-voltage and over-current, providing efficient and reliable protection against electric shocks and other disturbances. The breakdown voltage of the diode can be adjusted by either changing the supply voltage or by changing the temperature.
In conclusion, the VLZ22B-GS08 single Zener diode is an efficient device with a range of applications. It mainly finds use in voltage regulation, rectification, voltage switching, signal processing and surge protection applications. Its working principle is based on Zener breakdown and it allows a steady voltage to be output even with fluctuations in the input voltage.