Exceeding the breakdown voltage of a diode per se is not destructive. Breakdown voltage is a parameter of a diode that defines the largest reverse voltage that can be applied without causing an exponential increase in the leakage current in the diode.
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Pn junction diodes contain a bandgap through which exchange of charge carriers takes place.
Diode after breakdown voltage. When the voltage across the terminals is reversed and the potential reaches the zener voltage or knee the junction will breakdown and current will flow in the reverse direction a desired characteristic. But ill try and answer from what i have understood your understanding is. A pn junction diode is formed using a p type and n type material.
It was invented by a german physicist walter h. Breakdown voltage and depletion layer width at breakdown versus doping density of an abrupt one sided p n diode. I have not quite understood your concept.
A zener diode does exactly this however it also allows current to flow in an opposite direction once the breakdown voltage for this direction has been reached. Can you elaborate it a bit. Shown are the voltage and width for a planar top curves cylindrical middle curves and spherical bottom curves junction with 1 mm radius of curvature.
Diodes are the semiconductors and their electrical properties lie in between that of conductors and insulators. When the anode is positive with respect to the cathode. Although exceeding its current capacity will be.
Zener breakdown is different from avalanche breakdown in the sense that zener breakdown occurs in heavily doped diodes where the depletion region is very narrow therefore a comparatively small reverse voltage is sufficient to start conduction whereas normal diodes are lightly doped thereby the depletion region is very wide so a very high reverse voltage is necessary to start conduction. I am assuming you are familiar with two breakdown mechanisms that occur in p n junctions avalanche. Note that for the zener for any voltage there is only one value of current associated so the zener isnt a two state device.
A zener diode is a type of diode that allows current to flow in the conventional manner from its anode to its cathode ie. The schottky diode is a semiconductor also known as hot carrier diode. Types of break down diodes and applications.
Yes it does have regions of operation forward biased reverse biased and breakdown but these simply refer to different regions of the iv curve. The types of break down diodes include schottky diode zener diode and avalanche diode. If a zener diode has a.
The forward voltage ranges from 150 450 mv. When a forward bias is applied current flows in the.
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