These reverse-mount NeoPixel RGB LEDs (SK6812-E) are designed to be soldered from the top of a PCB and shine through a cutout in the board. This keeps the component side flat and simplifies manufacturing by placing all parts on one side. At just 3.1 × 2.7 × 1.7 mm, they're tiny but bright — and the long pads make hand soldering manageable.

Each LED contains an integrated driver chip with ~12 mA constant current drive per channel, so colours stay consistent even with voltage variations. No external current-limiting resistors are needed. Like all NeoPixels, they can be daisy-chained — the data output of one feeds into the input of the next for virtually unlimited strip lengths.

Key Features

• Reverse Mount Design – Solders to top pads and shines through a PCB cutout
• SK6812-E Chipset – NeoPixel-compatible with integrated driver and 24-bit colour
• ~12 mA Constant Current – Consistent colour output without external resistors
• Chainable – Data output connects to the next LED for long chains
• 5 V Operation – Standard NeoPixel power supply
• Compact – 3.1 × 2.7 × 1.7 mm

Specifications

• LED Type – SK6812-E (NeoPixel compatible)
• Colours – RGB (red, green, blue)
• Operating Voltage – 5 V DC
• Constant Current – ~12 mA per channel
• Dimensions – 3.1 × 2.7 × 1.7 mm
• Data Protocol – Single-wire, 24-bit colour (800 kHz)

Ideal For

• Custom PCB designs with through-board illumination
• Keyboard and keyswitch backlighting (e.g., NeoKey boards)
• Single-side SMT assembly with reverse-mount LEDs
• Compact RGB indicator and status lighting

Package Contents

• 10× SK6812-E Reverse Mount RGB LEDs

Resources

• Adafruit NeoPixel Uberguide