Why Zener Diodes Don't Have Current Leakage

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Discussion Overview

The discussion revolves around the behavior of Zener diodes, specifically addressing the concept of current leakage in reverse bias conditions. Participants explore theoretical and practical aspects of Zener diode operation, including the implications of leakage current in various scenarios.

Discussion Character

  • Debate/contested

Main Points Raised

  • One participant questions the absence of current leakage in Zener diodes, seeking clarification.
  • Another participant asserts that all diodes, including Zener diodes, exhibit some level of leakage current.
  • A third participant references a lecturer's claim that Zener diodes do not have leakage current in reverse bias, suggesting this may be incorrect.
  • Further, a participant argues that while Zener diodes conduct in reverse breakdown, they may not exhibit leakage in that specific state, implying a nuanced view of leakage current.

Areas of Agreement / Disagreement

Participants express disagreement regarding the existence and implications of leakage current in Zener diodes, with no consensus reached on the lecturer's claim versus the assertion that all diodes have leakage.

Contextual Notes

Participants reference practical and theoretical perspectives, indicating potential misunderstandings about the definitions and conditions under which leakage current is considered.

ahjie
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Can someone help me ?
i can't understand why zener diode don't have current leakage?
 
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It does. Every diode has some leakage.
 
My lecturer say it don't have leakage current in revere bias circuit ? (include in pratical)
 
Your lecturer is wrong. All diodes have leakage current. It is their nature.

Here is the first zener diode datasheet I found on Google.

http://www.diodes.com/datasheets/ds18004.pdf

Check out the Electrical Characteristics... it lists the maximum reverse current.
 
I suppose it depends on how you look at it. It won't have leakage when in reverse breakdown since it is conducting and is supposed to be conducting. I would agree with carlgrace in that the lecturer has some wires crossed.
 

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