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Electronic Knowledge | Light-emitting diode

一、Definition

LEDs (Light Emitting Diodes) are semiconductor light sources that combine a P-type semiconductor (larger hole concentration) with an N-type semiconductor (larger electron concentration). Applying a sufficient forward voltage will cause the electrons and holes to recombine at the P-N junction, releasing energy in the form of light.

 

二、Function

It has high efficiency, long life, not easy to break, fast response, high reliability, etc.. Advantages of non-traditional light source.

 

三、How to order?

Key points: Appearance, shape? SMD or DIP? size? Colloid color? Color and wavelength nm? Brightness mcd? Current and voltage? Multiple or single use? Application?

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