LEDs

LEDs

LEDs

What is an LED?

An LED (light-emitting diode) is a an electrical component that emits light when current flows through it. Diodes are like one way valves for electricity and consist of semiconductor material which are ‘doped’ with impurity elements to change their chemical structure so that one half of the semiconductor material has a negative charge and the other has a positive charge. These regions are called the n- and the p-region respectably. We stock a variety of LEDs in different sizes and wavelengths to jazz up your project. We also sell RGB LEDs which can be programmed to give output different colours of light.

How does an LED work?

In the n-region of the semiconductor material there are negatively charged free electrons, while in the p-region there is an absence of an electron known as an ‘electron hole’ which is positively charged. When current flows through an LED, free electrons combine with the holes in the p-region to produce photons. LEDs convert electrical energy directly into light which is why they are much more efficient a greener option for lighting your project than incandescent light bulbs which convert electrical energy into heat into light.

led

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  • Large Inductive Coil Charger Module and 10 Wireless Colourful LED Kit-2 Large Inductive Coil Charger Module and 10 Wireless Colourful LED Kit-1

    Large Inductive Coil Charger Module and 10 Wireless Colourful LED Kit - 24V

    Proto-PIC

    £30.00
    Proto-Pic offers high-quality colorful LED kit with 24V inductive wireless charging module. Round shape inductive coil made from best material and its take 24V as a power supply. The coil sensing distance is 0 - 150mm. The Transmitting coil outer...
    £30.00
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  • Small Inductive Coil Charger Module and 10 Wireless Colourful LED Kit-1 Small Inductive Coil Charger Module and 10 Wireless Colourful LED Kit-2

    Small Inductive Coil Charger Module and 10 Wireless Colourful LED Kit - 5V

    Proto-PIC

    £15.00
    Proto-Pic offers high-quality colorful LED kit with 5V inductive wireless charging module. Round shape inductive coil made from best material and its take 5V as a power supply. The coil sensing distance is 0~80mm. The Transmitting coil outer diameter is...
    £15.00
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    £15.00
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  • PPCOM-00760 LED Matrix RGB Main PPCOM-00760 LED Matrix RGB Rear

    LED Matrix - Serial Interface - Red/Green/Blue (COM-00760)

    Sparkfun

    £66.00
    LED Matrix - Serial Interface - Red/Green/Blue - Sparkfun COM-00760 This is a large sized RGB LED Matrix with a backpack that has been designed to take SPI serial input and display any graphics you pass it. All the refreshing and communication...
    £66.00
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  • Super Bright LED Blue 5mm Super Bright LED 5mm dimensions

    Super Bright LED Range - Colored, 5mm and 10mm

    £0.34 - £1.55
    The Super Bright LED Range is exactly what it says on the tin, these light emitting diodes are ridiculously bright! Excellent for illuminating surfaces, we advise not to look directly at them. Please take a look through the product gallery to get an idea...
    £0.34 - £1.55
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  • basic-leds

    LED Range - Diffused, Clear, RGB, 3mm, 5mm and 10mm

    £0.05 - £3.00
    This is our range of basic Through Hole LEDs are available in 3mm, 5mm, 10mm in all the standard colours and can be bought singularly or in 25 or 100 packs.Don’t forget your current limiting resistors, for a 5V circuit we recommend 150 Ohm or 180...
    £0.05 - £3.00
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  • 10mm_LED_Holder 11841-02__947561

    LED Holder Range - Plastic and Chromed

    £0.30 - £0.50
    LED Holders give a great finishing touch to your project.Drill a hole in your panel (each option above will give you the drill diameter) and pop the holder in.Some LED Holder types just clip in, whereas the Chrome effect ones are secured in place with a...
    £0.30 - £0.50
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  • PPCOM-13326_1

    LED Mixed Bag - 10mm

    Sparkfun

    £8.69
    LED Mixed Bag - 10mmSometimes when you have too many choices, it’s hard to make a good decision. In fact, there are times when you just want a bag of LEDs, just one of each, that’s all you want. Well here you go!The LED Mixed Bag contains one each of our...
    £8.69
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  • PPCOM-11120_main PPCOM-11120_main1

    Diffused LED - RGB 10mm

    Sparkfun

    £0.90
    Diffused LED - RGB 10mm Check out these big 10mm through-hole LEDs!The opaque epoxy package causes these LEDs to have a soft, diffused glow.
    £0.90
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  • PPCOM-09349_Infrared_LED__01 PPCOM-09349_Infrared_LED__02

    Infrared LED, 950nm

    Sparkfun

    £0.90
    Infrared LED, 950nm This is a very simple, clear infrared LED. These devices operate between 940-950nm and work well for generic IR systems including remote control and touch-less object sensing. Pair them with any of our IR receivers. 1.5VDC forward...
    £0.90
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  • PPCOM-09349_Infrared_LED__01

    Infrared IR LED - 850nm, 5mm

    Sparkfun

    £0.77
    Infrared IR LED - 850nm, 5mm This is a very simple, clear infrared LED. These devices operate between 840-850nm and work well for generic IR systems including remote control and touch-less object sensing. Pair them with our IR receiver. This device has a...
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  • 11679-04__45246 11679-04__452461

    SparkFun COM-11679 LED - RGB 5mm Square (Piranha)

    Sparkfun

    £0.65
    SparkFun COM-11679 LED - RGB 5mm Square (Piranha) Thanks to their square shape, these RGB LEDs can sit flush against a PCB saving you precious vertical space in projects where space is a luxury. They may not be huge, but these common cathode piranha LEDs...
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