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Zener diode. Answered

What is the voltage drop across a 3v, 0.5W Zener diode?

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AndyGadgetBest Answer (author)2013-08-14

 
When it's forward biassed it will be just like a normal diode - around 0.7V.
When it's reverse biassed it will be 3V, as your question suggests.

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iceng (author)AndyGadget2013-08-14

+1
Zener diodes like resistors have a tolerance variability.

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