1N5929B

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Part Status:	Active

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Overview

The 1N5929B, also known as a Zener diode, is a single diode for regulating a voltage at a predetermined level. Voltage regulation and regulation over temperature are what define a Zener diode, and the 1N5929B is no different. It is part of the TRU Diode family, manufactured by the ON Semiconductor Corporation, and while it has a maximum voltage range of 5.1V and a Peak Repetitive Reverse Voltage of 10V, its power dissipation is limited to only 500mW, making it appropriate only for low-power applications.

Application Fields

The 1N5929B is well-suited for low-power voltage regulation applications, as its low power dissipation and limiting of current allow it to be used in both low voltage and low current applications. For example, its current is limited to a maximum of about 50mA, making it suitable for low voltage applications, such as controlling analog audio signals or providing low voltage power for a clock or microcontroller. In addition, its temperature regulation prowess makes it a good choice for LED applications, as it can prevent LED burnouts when the temperature gets too high.

Working Principle

The 1N5929B contains two sections inside its case - a series element and a Zener element. The series element limits the current flow through the diode, while the Zener element regulates the voltage of the diode. When forward voltage is applied to the diode, the current will flow through the series element at a restricted level until the voltage drops to the specified breakdown voltage. At this point, the Zener element will take over and maintain the specified breakdown voltage.The breakdown voltage of the 1N5929B is 5.1V, meaning that its voltage will remain at 5.1V/ regardless of the voltage of the signal being regulated. This is done by diverting some of the current flow through the Zener element, thus preventing an increase in voltage above the specified breakdown level.

Conclusion

The 1N5929B Diode is a single Zener Diode from the TRU Diode family, manufactured by ON Semiconductor Corporation. It is well-suited for low-power applications, as it is limited to a maximum voltage of 5.1V, a peak repetitive reverse voltage of 10V and a power dissipation of only 500mW. Its purpose is to regulate voltages at a predetermined level, and this is done by a series element limiting the current flow, and a Zener element regulating the voltage. It is particularly useful for low voltage applications, such as controlling analog audio signals, as well as LED applications where it can prevent LED burnouts due to high temperature.

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