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there is difference between doping levels.In normal PN junction diode we add 1 impurity for 108 atoms where as in tunnel diode we add 1 impurity for 103 atoms.there is a probability that electrons may penetrate through barrier.So will not disappear
in tunnel diode we get maximum current before barrier disappear where as we get maximum current after break down(there is no barrier)
this effect lies within a certain voltage limit of 0.4V.
When we consider the energy band structure in case of PN junction diode the fermi level lies inside the forbidden energy gap.In case of tunnel diode,the fermi level lies outside the forbidden energy band.
In tunnel diode, there is a topic about negative resistance region where as we cannot discuss it in PN junction diode.
ur friend,
uma.
Wiki User
∙ 12y ago
Wiki User
∙ 12y agoThe recombination energy is converted to heat energy(phonons) in junction diode and light energy (photons) in led.
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What does 1N stand for in 1N4148 diode?
It is one junction i.e. P-N junction diode.
What is the opposite of diode?
another name for diode is "pn" junction.
Difference between gunn diode and pin diode?
gunn diode is transfered electron device & PIN diode is semiconductor device
Difference between 1N4007 and 1N4005 diode?
THE 1n4000 series are classified as rectifiers for low frequency use having a big capacitance at the junction the other are diodes that have a very small capacitance therefore a quick disconnect time from conducting to off.
PN junction diode made of silicon is the value of voltage depends exponentially on the current through the diode.?
No, the voltage across a silicon PN junction diode does not depend exponentially on the current through the diode. The relationship between voltage and current in a PN junction diode is described by the diode equation, which is an exponential relationship between current and the voltage across the diode. However, this relationship depends on factors such as the temperature and doping levels of the diode, in addition to the material used.
What is tunnel diode?
A thin junction diode which exhibits negative resistance under low forward bias condition is known as tunnel diode.
What is the tUnnel diode?
A thin junction diode which exhibits negative resistance under low forward bias condition is known as tunnel diode.
What is the difference between an ideal zener diode and practical zener diode?
Zener diode is heavily doped pn junction diode.
Reverse characteristics graph of pn junction diode?
what is the difference between reverse characteristics of zener diode and a practical diode ?
Why tunnel diode are used in negative resistance region?
because that the tunnel diode is a standard pn junction diode in many respect except its highly doped pn junction so it has some characteristics in the negative resistance region another that its a standard diode
What is the difference between p n junction and zener diode?
The difference between the pn-junction diode and the zener diode is that the pn-junction diode is used for rectification while the zener diode is used for rectification and stabilization. Also, the zener diode can function in the breakdown region while the pn-juntion diode can not function in that regime.
Difference between Schottky Barrier Diodes and PN junction diodes?
Difference between Schottky Barrier Diode and P-N Junction Diode is as following...Schottky Diode1) Usually using the aluminum metal which is trivalent element. 2) Depletion layer is thinner than the p-n junction diode.3) Forward threshold voltage is smaller than p-n junction diode(0.1V).4) The junction capacitance is lower than p-n junction diode.P-N Junction Diode1) Trivalent impurity is added to the pure silicon structure. 2) Depletion layer is wider than Schottky diode.3) Forward threshold voltage is higher than Schottky diode(0.6V)4) The junction capacitance is higher than Schottky diode.
What is the primary difference between a zener diode and PN-junction Diode?
ZENER DIODE IS MADE TO REVERSE BREAK OVER AT A CERTAIN VOLTAGE the break over knee is not exactly sharp especially in low voltage zeners. and p-n means positive and negative junction
What are the essential differences between a semiconductor junction diode and a tunnel diode?
A: The essential difference is while it will behave like a normal diode at some at .6 forward voltage it has a negative impedance area before this point is reached it is not a very stable area to maintain and has the tendency to switch from one mode [low level] to the other .6v and very fast endeed.
What is the difference between detector and diode detector?
difference between detector and diode
Difference between zener diode and junction diode?
Zener diodes and ordinary junction diodes are similar, except that zener diodes have additional doping to bring their reverse breakdown voltage into a more usable value, and to allow them to not destructively avalanche when they do conduct in the reverse direction.
Why tunnel diode differ from the rectifier diode?
tunnel diodethe doping level of the tunnel diode is high when compared with the rectifier diodeit exhibits negative resistancerectifier diodethe doping level of rectifier diode is low when compared with the tunnel diode
