Light Emitting Diode SMD

SMD LED means surface mount Light Emitting Diode, SMD chip helps to improve production efficiency, as well as application in different facilities. It is a solid-state semiconductor device that can directly convert electricity into light. Its voltage is 1.9-3.2V, the red light and yellow light voltage are the lowest. The heart of the LED is a semiconductor chip. Encapsulated with epoxy resin. The semiconductor wafer is composed of two parts, one part is a P-type semiconductor, in which holes dominate, and the other end is an N-type semiconductor, which is mainly electrons. But when these two semiconductors are connected, a P-N junction is formed between them. When the current acts on the chip through the wire, the electrons will be pushed to the P area, where the electrons and holes recombine, and then emit energy in the form of photons. This is the principle of LED Light emission. The wavelength of light is also the color of light, which is determined by the material forming the P-N junction.