Adafruit
NeoPixel Side-Light RGB LED w/ Integrated Driver Chip - 10-pack - SK6812B 4020
The SK6812B 4020 is a side-emitting NeoPixel-compatible RGB LED with an integrated driver chip. Unlike standard top-emitting LEDs, these emit light at 90° fr...
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The SK6812B 4020 is a side-emitting NeoPixel-compatible RGB LED with an integrated driver chip. Unlike standard top-emitting LEDs, these emit light at 90° from the PCB surface, making them ideal for edge-lit designs, light pipes, and compact indicator arrays.
Each 4 × 2 mm SMD package contains red, green, and blue LEDs driven by an internal controller that accepts 24-bit colour data via a single-wire protocol. The ~18 mA constant-current driver ensures consistent colour regardless of voltage variation, with no external resistors required. Power with 5 V DC.
Key Features
- Side-Emitting – Light output at 90° from the PCB, perfect for edge-lit effects
- NeoPixel Compatible – Works with the Adafruit NeoPixel library and any NeoPixel-compatible code
- Chainable – Connect output to input to create strips of any length
- Integrated Driver – 24-bit colour control with ~18 mA constant-current per channel
- Compact 4020 Package – Just 4 × 2 mm, the most space-efficient way to add addressable RGB LEDs
- 5 V DC Operation – No external resistors needed
Ideal For
- Custom side-emitting LED strips and arrays
- Edge-lit signs and displays
- Compact indicator lights on custom PCBs
Package Contents
- 10× SK6812B 4020 side-emitting RGB LEDs (on a strip)
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- constant-current driver
- A constant-current driver supplies a set current to its load even as the load voltage changes. It is commonly used to keep LED brightness consistent and protect LEDs from being overdriven, whether for indicator LEDs, high-power lighting, or display backlights.
- DC
- DC means direct current, where electricity flows in one constant direction, as supplied by batteries, USB ports and many plug-pack power supplies. When a product specifies DC, it runs from a DC supply rather than mains AC, so you need to provide the correct voltage and polarity.
- LED
- A light-emitting diode (LED) is a small electronic component that emits light when current flows through it in the correct direction. Because it only conducts one way, its polarity matters, and a through-hole LED must be soldered the correct way around to light up.
- microcontroller
- A microcontroller is a small computer on a single chip that runs a stored program and controls connected inputs and outputs such as buttons, sensors, displays and communication interfaces. In a device built around one, it is the part that executes the code and coordinates the device's behaviour.
- NeoPixel
- A type of addressable LED system where colour data is sent along a single digital data line from one LED or controller to the next. Compatibility matters because the timing and signal format must match for the lights or driver board to respond correctly.
- PCB
- A printed circuit board (PCB) is a board, usually rigid, with etched copper tracks that connect electronic components together without loose wiring. Components are mounted on the board and signals route between them through the copper layout.
- RGB
- Short for red, green and blue, the three primary colours of light that are mixed in varying amounts to make a wide range of colours. In electronics RGB can refer to an LED or pixel that blends these three colours, or to a colour signal or interface that carries separate red, green and blue channels.
- SMD
- SMD means surface-mount device, a component style designed to be soldered directly onto the surface of a circuit board rather than through holes. SMD parts are compact and mounted flat on the board, which suits smaller and mass-produced designs.
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