SMD Capacitor

ultraviolet and infrared wavelengths, with very high brightness.When a light-emitting diode is forward biased (switched on), electrons are able to recombine with electronholes within the device, releasing energy in the form of photons. This effect is called electroluminescenceand the color of the light (corresponding to the energy of the photon) is determined by the energy gap of thesemiconductor. LEDs are often small in area (less than 1 mm2), and integrated optical components may beused to shape its radiation pattern.[4] LEDs present many advantages over incandescent light sourcesincluding lower energy consumption, longer lifetime, improved robustness, smaller size, and fasterswitching. LEDs powerful enough for room lighting are relatively expensive and require more precisecurrent and management than compact fluorescent lamp sources of comparable output.Light-emitting diodes are used in applications as diverse as replacements for aviation lighting, automotivelighting (particularly brake lamps, turn signals and indicators) as well as in traffic signals. LEDs haveallowed new text, video displays, and sensors to be developed, while their high switching rates are alsouseful in advanced communications technology. Infrared LEDs are also used in the remote control unitsof many commercial products including televisions, DVD players, and other domestic appliances.