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Diodes - Zener - Single: 2EZ20D2E3/TR8 Application Field and Working Principle

The 2EZ20D2E3/TR8 is a single, bidirectional zener diode. It is typically utilized in applications involving power supplies, AC margin circuits, as well as voltage regulation. Generally, when it comes to zener diode applications, the voltage is clamped to a maximum allowable value in order to protect connected components and circuits from excess power. Its bi-directional current flow allows it to be used with both AC and DC voltages.

Operation Principle

Zener diodes are designed with heavily doped p-n junctions, which allows them to operate in reverse bias. When the current flowing through the diode is small in magnitude, it behaves like a regular diode, with a very negligible voltage drop across the diode. However, when the magnitude of reverse bias voltage generated at the junction exceeds a certain value, electron-hole pairs are formed due to avalanche breakdown. At this point, a large reverse current begins to flow through the diode, and the voltage across it is clamped to a certain value known as the zener voltage.

2EZ20D2E3/TR8 Specifics

The 2EZ20D2E3/TR8 offers superior protection for voltage-sensitive components. It is a single zener diode with a breakdown voltage of 20 V, maximum reverse current of 2 mA, and a power dissipation of 500 mW. It has an operating temperature range spanning from -55°C to 150°C and offers superior levels of reliability and performance when compared to other single zener diodes. Additionally, it is encased in a convenient, tiny SOT-23 package, making it easy to install and use in small, tight spaces.

Conclusion

The 2EZ20D2E3/TR8 single zener diode offers an economical solution for applications in which a voltage limit needs to be established. It is ideal for use in AC and DC power supplies, AC margin circuits, and voltage regulation scenarios. The device is equipped with a range of features that make it reliable and effective, such as a maximum reverse current of 2 mA, power dissipation of 500 mW, and a breakdown voltage of 20 V. As a result, the 2EZ20D2E3/TR8 is an excellent choice for most voltage-limiting applications.

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