Diodes

thumb|Various semiconductor diodes. Left: A four-diode bridge rectifier. Next to it is a [[1N4148 signal diode. On the far right is a Zener diode. In most diodes, a white or black painted band identifies the cathode into which electrons will flow when the diode is conducting. Electron flow is the reverse of conventional current flow.]]

diode that allows current to flow in the reverse direction at a specific voltage

diode with a low forward voltage drop, formed by a semiconductor–metal junction

type of semiconductor diode

A varicap diode, varactor diode, variable capacitance diode, variable reactance diode or tuning diode is a type of diode designed to exploit the voltage-dependent capacitance of a reverse-biased p–n junction.

thumb|80px|Three-layer DIAC The DIAC (diode for alternating current) is a diode that conducts electrical current only after its breakover voltage, VBO, has been reached momentarily. Three, four, and five layer structures may be used. Behavior is similar to the voltage breakdown of a TRIAC without a gate terminal.

form of diode

a diode with a wide, undoped intrinsic semiconductor region between a p-type semiconductor and an n-type semiconductor region

four layer semiconductor diode

diode that is designed to experience avalanche breakdown at a specified reverse bias voltage.

electronic component, power diode

early radio receiver component

two-terminal electronic component that limits current to a specified maximum

metal rectifier, invented in 1933, used in power supplies for electronic equipment and in high-current battery-charger applications until the late 1960s

electrical engineering equation

diode with a resonant-tunneling structure

semiconductor diode

standard silicon switching diode

diode connected across an inductor used to eliminate flyback (voltage spikes across inductive loads)

semiconductor diode based upon the p–n junction

active matrix backplane alternative to thin-film transistor technology

limit of flowing current through a device

semiconductor diode

family of low-cost general-purpose silicon rectifier diodes

The stabistor (also called a forward reference diode) is the technical term used to designate a special type of semiconductor silicon diode featuring extremely stable forward voltage characteristics. These devices are specially designed for low-voltage stabilization applications requiring a guaranteed voltage over a wide current range and highly stable over temperature. In these applications, stabistors offer improved dynamic impedance (voltage change vs. current) than low voltage zener diodes where tunneling instead of avalanche current is dominant. Other typical applications include bias sta