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.
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
-
Infrared LED, 950nm
Sparkfun
£0.90Infrared 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 -
Infrared IR LED - 850nm, 5mm
Sparkfun
£0.85Infrared 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...£0.85 -
LED - RGB 5mm Square (Piranha) PPCOM-11679
Sparkfun
£1.50LED - RGB 5mm Square (Piranha) PPCOM-11679 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 are...£1.50 -
LED - RGB Programmable, PTH, 5mm, Diffused (5 Pack)
Sparkfun
£4.00LED - RGB Programmable, PTH, 5mm, Diffused (5 Pack) We know this looks like a lot of our other LEDs, but it’s just not the case!These beauties are Pin Through Hole Addressable RGB LED with a WS2812 control IC built right into the LED. This version...£4.00 -
LED - RGB Programmable, PTH, 5mm Clear (Pack of 5)
Sparkfun
£3.60LED - RGB Programmable, PTH, 5mm, Clear (Pack of 5) We know this looks like a lot of our other LEDs, but it’s just not the case!These beauties are Pin Through Hole Addressable RGB LED with a WS2812 control IC built right into the LED. This version...£3.60Qty in Cart: 0Price:£3.60Subtotal: -
LED Green - 3W Aluminum Backed PCB (Pack of 5)
Sparkfun
£8.40LED Green - 3W Aluminum Backed PCB (Pack of 5) So much power and light from such a miniature package. This 5 pack of green 3 Watt aluminum backed PCBs is sure to shed a lot of light on any project you add it to.These LEDs act as any other LED except...£8.40 -
5mm UV LED Clear
Proto-PIC
£0.605mm UV LED ClearT hese 5mm UV LEDs are ideal for many lighting applications and products such as money checkers. The legs are on a standard 0.1" (2.54mm) spacing. Forward voltage drop: 3.4 V Viewing angle: 15 degrees Max forward current: 30...£0.60 -
LED RGB Programmable, PTH, 8mm, Diffused (5 Pack)
Sparkfun
£3.50LED – RGB Programmable, PTH, 8mm, Diffused (5 Pack) We know this looks like a lot of our other LEDs, but it’s just not the case!These beauties are Pin Through Hole Addressable RGB LED with a WS2812 control IC built right into the LED. This...£3.50Qty in Cart: 0Price:£3.50Subtotal: -
WS2812B RGB SMD LED (Strip of 10)
Proto-PIC
£3.50WS2812B RGB SMD LED (Strip of 10) The WS2812B may look like a common 5050-sized (5x5mm) SMD LED, but there’s actually an integrated control circuit embedded inside there too. If you look really hard, you can see the tiny black chip hidden in there,...£3.50 -
LED - 3W Aluminum PCB (5 Pack, Warm White) SparkFun COM-13104
Sparkfun
£10.00LED - 3W Aluminum PCB (5 Pack, Warm White) SparkFun COM-13104 So much power and light from such a small package. This 5 pack of “Warm” white 3 Watt aluminum backed PCBs is sure to shed a lot of light on any project you add it to. These LEDs...£10.00 -
SparkFun COM-13105 LED - 3W Aluminum PCB (5 Pack, Cool White)
Sparkfun
£9.50SparkFun COM-13105 LED - 3W Aluminum PCB (5 Pack, Cool White) So much power and light from such a small package. This 5 pack of “Cool” white 3 Watt aluminum backed PCBs is sure to shed a lot of light on any project you add it to. These LEDs...£9.50Qty in Cart: 0Price:£9.50Subtotal: -
WS2812B RGB Addressable LEDs 1000 per reel
Proto-PIC
£180.00WS2812B RGB Addressable LEDs 1000 per reel This is a reel of 1000 addressable 5050 RGB LEDs commonly known by the name Neopixels.WS2812B_DatasheetFor quantity discounts please contact us, if out of stock the lead-time is usually 7-10 working days.£180.00Qty in Cart: 0Price:£180.00Subtotal: