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GATE > Learn GATE Coaching > What is the characteristics of pn junction?
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What is the characteristics of pn junction?

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P-N junction is an electronic device which allows current in only one direction and offers high resistance in other direction. It is having Non-linear characteristics. Initially up to some cutoff voltage, it will not allow sufficient current to pass through it due to barrier potential (for SI 0.7 V and...
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P-N junction is an electronic device which allows current in only one direction and offers high resistance in other direction. It is having Non-linear characteristics. Initially up to some cutoff voltage, it will not allow sufficient current to pass through it due to barrier potential (for SI 0.7 V and for Ge 0.3 V). read less
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Narada

Pn junction has p- type and n-type two substrates connected forming a depletion layer because the majority carriers in them are different. It is used as a diode as forward biased or reverse biased.
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M.Tech,Post B.Sc B.Tech in Radio Physics and Electronics. B.Sc in Electronic science(First class First), Gold medalist. University of Calcutta

It has rectifying capability. It provide very low resistance for current in one direction and restrict flow of current in the opposite direction.
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