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Diodes - Zener - Single

A single voltage zener diode is a very common type of diode, specialized for voltage regulation, such as stabilizing the voltage across a high load. 3EZ27DE3/TR8, as one of the most commonly available single voltage zener diodes, is especially suitable for low power regulation applications. The general application field and working principle of it will be discussed in the following sections.

Application Field

3EZ27DE3/TR8 is a 3.3V Zener diode. It is specially used for low current voltage regulation applications, such as stabilizing the voltage across a high load, providing an optimum voltage level for electronic circuits that require precise operating levels, and protecting sensitive electronic equipment from overvoltage. It can also be used in overvoltage protection, voltage stabilization, and voltage reference of electronic systems. With a working current range of 0.2mA to 75mA, it is suitable for applications of low current, such as mobile phones, digital cameras and other portable devices.

Working Principle

When the voltage across the diode is below the Zener voltage, the diode acts as a normal diode and allows current to flow through it. However, when the voltage across the diode is greater than the Zener voltage, the diode breaks down and allows current to flow in the opposite direction, in order to maintain the desired voltage level. This phenomenon is known as the Zener effect.

The Zener voltage is determined by the voltage rating of the diode. For example, the 3EZ27DE3/TR8 has a Zener voltage of 3.3V. This means that when the voltage across the diode reaches 3.3V, the diode will break down and allow current to flow in the opposite direction. This enables the diode to stabilize the voltage across the load, as any additional increase in voltage will be precisely regulated.

Conclusion

3EZ27DE3/TR8 is a single voltage zener diode with a Zener voltage rating of 3.3V. It is mainly used for low current voltage regulation applications, such as stabilizing the voltage across a high load, providing an optimum voltage level for electronic circuits that require precise operating levels, and overvoltage protection. The diode utilizes the Zener effect to regulate the voltage across the load, ensuring that precise voltage levels are maintained.

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