Diode arrays are composed of multiple discrete (usually unconnected) diodes on a single silicon chip.

Diode lasers use light-emitting diodes to produce stimulated emissions in the form of coherent light output.

Diodes are electronic components that conduct electric current in only one direction, functioning as a one-way valve.

RF diodes are designed to handle high-power radio frequency (RF) signals in stereo amplifiers, radio transmitters, television monitors, and other RF or microwave devices

High voltage diodes are designed for use in high-voltage applications

Gunn diodes or transfer electron devices (TED) exhibit a negative resistance region.

Light-emitting diodes (LED) are PN junction devices that give off light radiation when biased in the forward direction.