![]() ![]() from Red (620nm to 750nm) to blue – violet (380nm to 490nm). Light Emitting Diodes can be manufactured to emit all the wavelengths of visible spectrum i.e. ![]() of single color and the color is dependent on the energy band gap of the semiconductor. The light emitted by an LED is usually monochromatic i.e. It consists of a PN Junction Diode and when voltage is applied to the LED, electrons and holes recombine in the PN Junction and release energy in the form of light (Photons). SMD LEDs (Surface Mount Light Emitting Diodes)Īs mentioned in the introduction, an LED is a semiconductor light source.Characteristics of LED (Light Emitting Diode).Hence, an article about Light Emitting Diodes, which focuses on different topics like Basics of LED, Types of LED and characteristics of an LED, would benefit all. Electronics Engineers, Electronic Hobbyists and Electronics Enthusiasts often work with LEDs for various projects. Few advantages of LEDs over incandescent and CFL light sources are mentioned below:īecause of these advantages, LEDs have become quite popular among a large set of people. The reason for such wide range of implementation of LEDs is its advantages over traditional incandescent bulbs and the recent compact fluorescent lamps (CFL). You can find LEDs in Cars, Bikes, Street Lights, Home Lighting, Office Lighting, Mobile Phones, Televisions and many more. Light Emitting Diodes are almost everywhere. An LED is basically a PN Junction Diode, which emits light when forward biased. An LED or a Light Emitting Diode is semiconductor device that emits light due to Electroluminescence effect.
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