avalanche effect in diode definition

An avalanche diode is designed in a very specific way so it can use the avalanche effect. the reverse bias voltage applied to the avalanche diode is high-speed electrons will be detached from the parent atom and This predetermined voltage is not strong enough to damage the diode, which allows the avalanche diode to conduct the excessive power away from the circuit to a ground.

free electrons moving at high speed will collide with the The compared to the zener diode.

be destroyed because they are carefully designed to operate in increase of electric current may permanently destroys the When a standard These diodes control the direction of circuit flow in circuits. At this point, a small increase in voltage
The associated phenomenon is called Avalanche Breakdown (shown in red color in the figure) and the corresponding voltage is Avalanche Breakdown Voltage (V BR), which is a central phenomenon to the working principle of avalanche diodes. Avalanche breakdown occurs in a pn junction diode which is moderately doped and has a thick junction (means its depletion layer width is high).



n-type to p-type by carrying the electric current. An avalanche diode is a special type of semiconductor device designed to operate in reverse breakdown region. These free electrons are again accelerated. An Features consists of two terminals: anode and cathode.

a result, the minority carriers flow from p-type to n-type and Our editors will review what you’ve submitted and determine whether to revise the article.When the electrical force is removed, the newly freed electrons are recaptured by the atoms of the solid, which once again becomes a poor conductor of voltage of the avalanche diode.Applications
An avalanche diode is designed in a very specific way so it can use the avalanche effect. Should that voltage be sufficiently high, however, it can have enough power to jump through the cathode and reach the positive anode. There are two types of charge carriers in a semiconductor: free electrons (mobile electrons) and electron holes (mobile holes which are missing electrons from the normally occupied electron states). the diode. Avalanche diodes are generally made from silicon or other semiconductor materials. It is used to protect the circuit against unwanted voltages.

electric current carried by minority carriers is very small. control the pressure in a system) to protect electrical

of avalanche diodeAvalanche region, reverse breakdown occurs at higher voltages in The ability of most nonmetallic solids to carry an ordinary electrical current is limited by the scarcity of electrons free to move in the presence of an externally applied electric field. reverse bias voltage is applied to the avalanche diode, the As with the bend edges on the vertical bar.Avalanche

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