What are the limitations of forward-bias, if any, on a semiconductor diode? What are the limitations of...

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Physics

What are the limitations of forward-bias, if any, on asemiconductor diode?
What are the limitations of reverse-bias, if any, on asemiconductor diode?
What portion, if any of the volt-ampere characteristic of thediode (when it is forward-biased) is linear?
What can you say about the d-c resistance of the diode over thislinear portion?

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4.1 Ratings (521 Votes)

a b In both cases you are limited by power dissipation For a forward bias the current is relatively high because the voltage drop is a fraction of a volt In the reverse bias case it takes very little current times the Zener voltage to equal the power limit Most diodes make fairly good Zeners just at very high and unpredictable voltage On the low side some diodes have a leakage current under which their behaviors is See Answer

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