3EZ20D10E3/TR12

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3EZ20D10E3/TR12 Application Field and Working Principle

As a single Zener diode, 3EZ20D10E3/TR12 is a semiconductor device used to provide precision voltage regulation control for electronic circuits. It also provides electrical component protection when incorporated into low-voltage circuits, particularly when used to protect circuits from transient voltage conditions. This article will discuss the application field and working principle of 3EZ20D10E3/TR12.

Application Field

3EZ20D10E3/TR12 is often used in circuits that need to regulate voltage. It can provide excellent voltage regulation and component protection in a wide variety of circuits, such as automotive and industrial applications, laptop power supplies, cellphone power supplies, battery chargers, RCIMs, and I/O protection applications. Its forward voltage drop is low (1.2V) and is suitable for automotive applications. Its small size is also suitable for use in handheld gadgets.

Working Principle

Zener diodes, such as 3EZ20D10E3/TR12, are more specialized than ordinary rectifier diodes. When the input voltage attains the diode\'s breakdown voltage, the device passes current in the opposite direction of the regular diode\'s flow. This occurs because the electric field, which was once opposing the electric current, suddenly changes direction and supports it. The voltage at which this condition occurs is called the Zener voltage.

The current-voltage characteristics of a Zener diode functions like a combination of a normal diode and a voltage regulator. When the voltage across the diode is below its breakdown voltage, the diode works as a normal diode and behaves as a one-way valve, allowing electricity to flow in a single direction, like a standard rectifier diode. When the voltage rises beyond the Zener voltage, the reverse leak current increases exponentially, and the voltage across the diode remains almost constant. This leads to a stable output voltage, which helps in preventing system problems caused by power fluctuations.

Conclusion

3EZ20D10E3/TR12 is a widely used single Zener diode for regulating voltages in various electronic applications. Its application field is broad and includes automotive, industrial, and handheld applications. Notably, its low forward voltage drop is suitable for automotive use. Its working principle is similar to that of a combination of a normal diode and a voltage regulator, where, when the voltage across the diode is below its breakdown voltage, it behaves as a regular one-way diode and, when above, the reverse leaking current goes up exponentially and the voltage remains roughly constant.

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