3EZ13DE3/TR12

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Diodes - Zener - Single

The 3EZ13DE3/TR12 is a single Zener diode that functions to limit the voltages across an electric circuit. A Zener diode works by utilizing thermionic emission or noise current which is created as a result of the excess current generated when the width of the depletion layer exceeds that of the internal junction width. The principle that the diode relies upon is based on the older Zener diode effect, coined by Clarence Gilbert Zener. This phenomenon is explained by quantum physics and is not yet able to be microscopically explained.

Application Field

The 3EZ13DE3/TR12 diode can be used in many different fields, and the main application field is for voltage regulation. It is widely used in circuits with AC and DC power sources, where the diode acts as a buffer between the two types of power. It is also widely utilized as a protection device in applications such as in telecoms, computing and automotive. Another application field is for static protection which involves using a Zener diode connected directly to the power source.

Working Principle

The 3EZ13DE3/TR12 diode works by using the reverse-biased Zener breakdown. This phenomenon occurs when the voltage applied to the diode exceeds the diode\'s avalanching breakdown voltage. The applied voltage will cause the diode to emit a burst of electron current and the diode will be in a state of Zener breakdown and maintain a constant voltage across the circuit. The phenomenon is also known as a Zener effect. The Zener breakdown current, also known as avalanche current, is dependent on the applied voltage, and when the applied voltage reaches a predetermined level, the Zener breakdown occurs and will limit the voltage to a predetermined level.

The 3EZ13DE3/TR12 diode works by utilizing the diode\'s p-n junction. When external voltage is applied to the diode, the N-type material releases electrons into the P-type material and vice-versa. This electron flow creates a depletion layer that blocks the movement of other electrons and the diode is at the reverse-biased. However, when the applied voltage exceeds the Zener breakdown voltage, the junction will be at saturation and cause an avalanche current to occur. This avalanche current will limit the voltage across the junction, thus maintaining a constant voltage across the circuit and turning the diode into an active electrical component.

Conclusion

The 3EZ13DE3/TR12 diode is a single Zener diode that is used in many fields, mainly for voltage regulation and static protection. It works by utilizing the Zener breakdown effect in which the applied voltage across the diode exceeds the Zener breakdown voltage, causing an avalanche current to flow. This current will limit the voltage across the junction and maintain a constant voltage across the circuit. The diode\'s working principle utilizes the diode\'s p-n junction and the Zener effect.

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