A light-emitting diode (LED) is a two-lead semiconductor light source. It is a p–n junction diode, which emits light when activated. When a suitable voltage is applied to the leads, electrons are able to recombine with electron holes within the device, releasing energy in the form of photons. This effect is called electroluminescence, and the color of the light (corresponding to the energy of the photon) is determined by the energy band gap of the semiconductor.

Diagram of Yellow LED 5mm.

Features of Clear Red LED 5mm

• Energy efficient.
• Environmentally friendly.
• Zero maintenance.
• Safety.
• Long life (50000 hrs to 100000 hrs).

Applications of Red LED 5mm

• Indicators and signs.
• Lighting.
• Data communication and other signaling.
• Sustainable lighting.
• Light sources for machine vision systems.
• 2.5-3.0V Forward Voltage, at 20mA current
• 300+ mcd typical brightness