Diodes are common components in electronics and are used, among other things, to convert alternating current to direct current. LEDs have become incredibly popular because they are much more energy-efficient than traditional incandescent bulbs. Since the LED is a type of diode, it only lets current through in one direction. To indicate how to mount it, one leg is longer than the other. The longer leg is the anode - the leg that should be closest to the positive coil. Depending on the material used to produce LEDs, they get different colors and electrical properties. Classic red LEDs are usually operated with a voltage from 1.8 V to 2.4 V and current from 5 mA to 10 mA. At Botland.store, you will find a large selection of LEDs and accessories at reasonable prices. Check our offer, and buy the high-quality LED diode, LED stripes, and many more! We provide fast shipping and professional guidance.
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SHT31 - digital humidity and temperature sensor I2C - Adafruit 2857
Index: ADA-05415
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BATT-MAN Click - power manager - LTC3586 - Mikroe MIKRO-2901
Index: SPF-23009
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LED diodes
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LED RGB 5mm matte common cathode - 5 pcs
LED RGB 5 mm with common cathode. Lens is matte with better light scattering. 5 pcs.
Index: UCC-01667
Index: UCC-01667
LED RGB 5mm common anode - 5 pcs
LED RGB 5 mm with common anode. Lens transparent. The product is packed in 5 pieces.
Index: LED-00543
Index: LED-00543
LED RGB 5mm common cathode - 5pcs.
A single 5 mm led RGB common cathode. Has a transparent lens and shines at an angle of 30°. The color is transferred in three digit RGB (red, green, blue). With these LEDs, you...
Index: UCC-00547
Index: UCC-00547
LED 5mm white cool clear - 5pcs
5mm cold white LED . Transparent lens. Price per 5 pieces .
Index: LED-03705
Index: LED-03705
The module with a laser emitting light in a red color. Power equal to 5 MW. Voltage supply from 3 to 5 V.
Index: LED-06450
Index: LED-06450
LED 5mm holder - nylon long - 10pcs
Long nylon LED holder 5 mm. The subject of the sale is the holder , the LEDs can be purchased separately. Price of 10 pcs.
Index: LED-03772
Index: LED-03772
5mm 12V LED with resistor and wire - red
5mm red LED with attached resistor and 20cm long cable. It is powered by 12 V DC. Price for 5 pcs.
Index: LED-04754
Index: LED-04754
LED holder 5mm - metal concave - 10pcs
A concave holder designed for 5 mm LEDs. It is made of metal, inside the holder there is an insulating plastic insert . The holders are designed to protect the diode...
Index: DNG-18764
Index: DNG-18764
LED strip RGB WS2812 5050 x 8 LEDs - 53mm
The strip consists of 8 individually addressed RGB LEDs 5050 with integrated driver. To control the module, one microcontroller's pin is sufficient. The module length is 53 mm.
Index: LED-06255
Index: LED-06255
Set of 5mm LEDs - justPi - 30pcs.
A set of LEDs in a 5mm DIP housing. It contains as many as 30 diodes in 3 colours - 10 pieces in red colour, 10 pieces in green colour and 10 pieces in yellow colour....
Index: JUS-19985
Index: JUS-19985
Set of 5mm LED - 160pcs with resistors + organizer
The kit consists of 160 PCs of 5 mm LEDs: 50 of yellow, red and green elements and 10 LEDs in blue color. The kit also includes: 200 pieces of resistors and a handy organizer
Index: LED-11552
Index: LED-11552
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LED holder 5mm - metal convex - 5pcs
LED holder 5 mm, made of metal. The subject of the sale is the holder, the LEDs can be purchased separately.
Index: AKS-03774
Index: AKS-03774
LED diode 5 mm, white. Transparent lens. Brightness: 8 000 mcd. Beam angle: 20 °. Price for 5 pieces.
Index: LED-00542
Index: LED-00542
LED 5mm white warm clear - 5pcs
LED diode 5 mm warm white. Transparent lens. Brightness: 14 000 mcd. Beam angle: 15 °. Price for 5 pieces.
Index: LED-00545
Index: LED-00545
Set of 10 pieces of red LEDs. The diameter of the lens is 5 mm. The diodes emit radiation in the visible light range. The LEDs are designed for THT (through hole) mounting....
Index: JUS-19995
Index: JUS-19995
Set of 5mm LEDs - justPi - 16pcs.
A set of LEDs in a 5 mm DIP housing. It contains as many as 16 diodes in 4 colours - 5 pieces of red, 5 pieces of green, 5 pieces of yellow and 1 piece of blue diode. The...
Index: JUS-19992
Index: JUS-19992
Set of 5mm LEDs 10pcs with resistors
Set of ten 5 mm LEDS with resistors. The kit includes: 10 PCs resistors 1.2 kΩ and 3 PCs green, red and yellow LEDs and 1 blue LED.
Index: LED-04663
Index: LED-04663
Pixel Boost module - 3.3V / 5V voltage buffer for WS2812B diodes
The module is used to control the WS2812B LEDs, in the case of a microcontroller running on voltage 3.3 V. It includes a buffer that allows you to convert voltages. Module...
Index: MSX-08790
Index: MSX-08790
Module 3x LED SMD5050 12V IP65 white cold
Module consisting of 3 LEDs SMD 5050. The strip is taped on the reverse side. Price for 1 PC.
Index: LED-04148
Index: LED-04148
LED 5mm 12V with resistor and wire - green - 5pcs
Led 5mm green with the included resistor and a wire length of 20 cm. It is supplied with the voltage of 12 V. Items are sold in sets of 5 pieces.
Index: LED-03159
Index: LED-03159
Index: LED-04536
Index: LED-04537
5mm 12V LED with resistor and wire - blue - 5pcs.
5mm blue LED with attached resistor and 18cm long cable. It is powered by 12 V DC.
Index: LED-04755
Index: LED-04755
Light-emitting diodes - semiconductor light source
Light-emitting diodes are a very popular electric light source, which in many applications replaces conventional thermal, halogen and fluorescent bulbs - including compact ones, available as energy-saving bulbs. This was not always the case - when introduced to the market, LEDs emitted little light and were only used as a replacement for small incandescent and fluorescent lamps, used, for example, as controls in electronic equipment. Only recently have light-emitting diodes, capable of illuminating the surroundings, become commercially available. This coincided with the introduction of white LEDs, which use special phosphors and multicolor LED structures to emit a wide spectrum of light.
The history of the LED
The first light-emitting diodes appeared on the market in 1962 - they emitted low-intensity infrared light. Over the next six years, HP developed these solutions to create the first red LED. They were characterized by low intensity, which made them suitable only for use as indicators. It was then that seven-segment LED displays, which are still popular today, were created. In the following decades, semiconductor materials and their technology were developed , which enabled the creation of increasingly intense colors in a wider range of operating wavelengths. This also allowed the creation of white LEDs, which are made of materials emitting red, green and blue colors, thanks to which our eye registers their emission as white light. Over 40 years of development, light-emitting diodes have increased their emission efficiency (in lumens per watt) by about seven orders of magnitude. Modern LEDs are available in the visible, ultraviolet and infrared wavelength range and are characterized by very high emission efficiency.
LED diodes - Principle of operation and structure of a light-emitting diode
In LEDs, light is produced by the recombination of electrons and holes in the semiconductor . This process is called electroluminescence, hence the name of these elements. The LED is a junction device. There are natural enriched areas in the PN structure, where there is an excess of electrons (N) and holes (P). Under the influence of the applied current, electrons move from the N region and recombine with the holes existing in the P region. The free electrons are in the conduction band, and the holes are in the valence band. The difference in energy levels must be dissipated to recombine electrons and holes. This energy is emitted in the form of a photon of light. The length of the emitted electromagnetic wave depends on the energy gap - the distance between the conduction band and the valence band - of a given semiconductor.
LEDs and accessories - FAQ
Compared to traditional light sources that convert electricity into heat and then into light, LEDs (Light Emitting Diodes) convert electricity directly into light. They thus ensure efficient light generation with low losses of electricity.
At Botland, we have divided the available diodes into RGB LEDs, LED strips and matrices, laser diodes, IR infrared diodes and all LED accessories such as lampholders and drivers. Diode types differ in parameters such as wavelength, digital control, lens, illumination angle, tightness class, light color and nominal power.
Resistors are most often used before connecting to the battery. A resistor is a basic electronic component used to limit the value of electric current flowing through it. We have a full guide to connecting LEDs on the Botland Blog .
The simplest way to power an LED is to use a constant DC voltage source that already powers other electronics in the circuit. You can regulate the current using an appropriate resistor - do not connect the LED directly to a battery or power supply, as it will be destroyed by excessive current flowing through it.
To calculate the power consumption of an LED, simply multiply its voltage (in volts) by its current (in amps). The result, expressed in watts, is the amount of energy the LED consumes.
Diodes, generally speaking, are made of very thin layers of semiconductor material. One layer has an excess of electrons, while the other has a deficiency of electrons. Manufacturers can now produce such layers as thin as 0.5 microns or even less.