Zener diode is heavily doped than the normal p n junction diode. The doping level of the zener diode is somewhat higher than the normal pn junction diode.
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Negative charges electrons can easily flow through the junction from n to p but not from p to n and the reverse is true for holes.
Pn junction diode and zener diode. So that it can give a sharp breakdown voltage. Diode has two terminals known as the anode the p type layer and cathode the n type layer. A normal diode if operated in reversed biased will get destroyed.
A special type of pn junction diode that operates in reverse biased mode more specifically in breakdown region is known as zener diode. Summary of p n junction diode and zener diode p n junction diodes are made of two p and n semiconductor layers permitting current to flow in only in one direction thus being used as rectifiers. Zener diodes acts like normal p n junction diodes under forward biased condition.
This direction of current is marked on its symbol with an arrow head. A zener diode is a semiconductor device which conducts in forward biased as well as reversed biased. A pn junction diode is one of the simplest semiconductor devices around and which has the characteristic of passing current in only one direction only.
A p n junction diode is two terminal or two electrode semiconductor device which allows the electric current in only one direction while blocks the electric current in opposite or reverse direction. Therefore diode is a pn junction. When forward biased voltage is applied to the zener diode it allows large amount of electric current and blocks only a small amount of electric current.
Diode allows current to flow through it only in one direction that is anode to cathode. Hence it has very thin depletion region. They are differentiated by their property of current conductionthe pn junction is lightly doped and having large depletion region which is only eliminated by forward biasing.
Difference between diode and zener diode. A pn junction diode allows electric charges to flow in one direction but not in the opposite direction. The behaviour of the pn junction with regards to the potential barriers width produces an asymmetrical conducting two terminal device better known as the pn junction diode.
The pn junction diode and the zener diode both are made up of semiconductor material. Thus a normal pn junction diode is considered as a unidirectional device. What is p n junction semiconductor diode.
Zener diodes are specifically doped being able to transmit current in both directions. If the diode is forward biased it allows the electric current flow. The forward bias and the reverse bias properties of the pn junction imply that it can be used as a diode.
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