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Diodes - Zener - Single

2EZ4.3D2E3/TR12 is a type of single, Zenner Diodes. This specific diode is designed to be surface mountable and usually used in low power circuit.

Application Field

The 2EZ4.3D2E3/TR12 Zenner Diode is widely used in voltage regulation and reference operations such as controlling switch between different voltage levels (cheap and efficient way), buffering and light load switches in battery systems, and as peak detectors. It finds applications in computers, single-chip microcontroller, peripheral transceivers, embedded systems and communication systems. Apart from these, it is also used as voltage regulator and in microprocessor-based control systems and low voltage radio equipment, battery charger, and power calculation and signal transmission systems.

Working Principle

The 2EZ4.3D2E3/TR12 Zenner Diode works on a simple yet powerful mechanism which allows it to be used as a voltage regulator. As current passes in the reverse bias condition, the voltage between the anode and the cathode will increase until it reaches a special voltage, the “Zener Voltage”, where the junction breakdown occurs. This Zener Voltage will remain constant, regardless of the current passing through the diode. As it is dependent on the characteristics of the diode itself, the exact Zener Voltage can easily and precisely be determined in the design stage.

The breakdown of the Zenner Diode creates a short path for the current to freely flow into the diode\'s junction, causing the reverse bias current to reverse, giving us a constant voltage away from the anode. In general, Zenner Diodes with lower Zener Voltage will be more sensitive to current fluctuations due to the shift of the junction’s “knee”.

Conclusion

The 2EZ4.3D2E3/TR12 Zenner Diode is a type of Zenner Diode that can be used in voltage regulation and reference operations. It is a junction diode which works on the breakdown of the junction and allows a steady Zener Voltage to be obtained. The Zener Voltage is predetermined by the characteristics of the diode and can be easily determined.

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