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The Schottky diode (named after the German physicist Walter H. Schottky), also known as Schottky barrier diode or hot-carrier diode, is a semiconductor diode formed by the junction of a semiconductor with a metal. It has a low forward voltage drop and a very fast switching action.
A Schottky diode is a single metal–semiconductor junction, used for its rectifying properties. Schottky diodes are often the most suitable kind of diode when a low forward voltage drop is desired, such as in a high-efficiency DC power supply. Also, because of their majority-carrier conduction mechanism, Schottky diodes can achieve greater ...
A schematic symbol for Schottky diodes 1N5822 Schottky diode with cut-open packaging. The semiconductor in the center makes a Schottky barrier against one metal electrode (providing rectifying action) and an ohmic contact with the other electrode. SS14 schottky diode in DO-214AC (SMA) (SOD-106) surface-mount package version of 1N5819 [1]
Band diagram for Schottky barrier at equilibrium Band diagram for semiconductor heterojunction at equilibrium In solid-state physics of semiconductors , a band diagram is a diagram plotting various key electron energy levels ( Fermi level and nearby energy band edges) as a function of some spatial dimension, which is often denoted x . [ 1 ]
Diagram of a simple circuit with an inductance L and a flyback diode D.The resistor R represents the resistance of the inductor's windings. A flyback diode is any diode connected across an inductor used to eliminate flyback, which is the sudden voltage spike seen across an inductive load when its supply current is suddenly reduced or interrupted.
The inset of the figure shows the circuit schematic symbol of the HBV. From the symbol, one can conclude that the HBV consists of two, back to back, anti-serially connected rectifying diodes (such as Schottky diodes for instance). The gap in the middle of the diode symbol represents the inherent capacitance of the device.
The standard two-diode Baker clamp circuit, which includes the feedback current I 1 that reduces the base current I b Baker clamp alternative in a Schottky transistor. The Baker clamp is named after Richard H. Baker, who described it in his 1956 technical report "Maximum Efficiency Transistor Switching Circuits". [2]
Shockley derives an equation for the voltage across a p-n junction in a long article published in 1949. [2] Later he gives a corresponding equation for current as a function of voltage under additional assumptions, which is the equation we call the Shockley ideal diode equation. [3]