Can someone help me ?
i cant understand why zener diode dont have curent leakage?
It does. Every diode has some leakage.
My lecturer say it dont 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.
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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