3EZ39D2E3/TR8

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Zener diodes are one type of single diodes, typically used for shunt voltage regulation. They have a greatly different working principle than the normal p-n junction diodes. 3EZ39D2E3/TR8 is a series of Zener diode produced by ROHM semiconductor. This series of diode provides an various range of breakdown voltage from 3.3V to 45V. In this article we will discuss the application field and working principle of 3EZ39D2E3/TR8 Zener diodes.

Applications

The 3EZ39D2E3/TR8 series Zener diodes are very suitable for many applications. They are commonly used to provide a source of constant voltage and transient protection. Additionally, they can also be used as a voltage reference for high input resistance. Because of their low noise and excellent switching current characteristics, they are used in many communication and audio applications.

Furthermore, Zener diodes can be used to clamp unwanted voltage transients, which may be caused by lightning or other sources, as well as for the protection of circuits on the board. Moreover, one of their most important applications is when they are used in circuits to provide over-voltage protection.

Zener diodes are also used in circuits to provide power management and provide power-on reset signals in circuit variation-sensitive equipment.

Working Principle

An ideal Zener diode has a negative resistance characteristic, This is in comparison to a normal diode which has a positive ability and conducts only in forward bias. Under the reverse bias of 3EZ39D2E3/TR8, the diode’s ability is greatly reduced, creating a region across the junction which behaves like a resistor. As the bias voltage reaches the breakdown voltage, the current increases rapidly. This voltage, which is known as the Zener voltage, remains fairly constant, even if the input voltage increases.

When the voltage across the Zener diode reaches the breakdown voltage, further increase in voltage will cause the device to enter a breakdown region. An avalanche of electrons moves from the heavily doped n-side to the heavily doped p-side, generating a large current. The reverse resistance of the 3EZ39D2E3/TR8 group of Zener diodes is low, which means that a small change in current will create a large change in voltage. This allows the 3EZ39D2E3/TR8 series to maintain its constant voltage characteristics even with large changes in its input current.

The ability of the diode to act as a voltage regulator relies on its unique negative resistance characteristic. The Zener diode maintains a constant voltage across its terminals, regardless of the current flowing through it. This makes it an ideal component for creating a regulated power supply and preventing damaging voltage spikes.

Conclusion

3EZ39D2E3/TR8 is a series of Zener diodes produced by ROHM semiconductor. These diodes have a wide range of breakdown voltage from 3.3V up to 45V and can be used for a variety of applications. They are used for voltage regulation, transient protection, as power-on reset signals, and for over-voltage protection. Their working principle is based on the fact that they have a negative resistance characteristic when the diode is operated in a reverse bias.

3EZ39D2E3/TR8 Zener diodes have proven to be a reliable and inexpensive choice for many common applications. They can be used in any situation where constant voltage regulation or over-voltage protection is needed.

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