These 5mm Red Green and Blue LED units have four pins - Cathode is the longest pin. One for each colour and a common cathode. Use this one LED for three status indicators or pulse width modulate all three and get mixed colours!
Please Note:
- The order of the RGB pins may change from batch to batch but GND will always be the longest pin.
- You can easily check by connecting them up and testing the colours.
- Forward Voltage (RGB): (2.0, 3.2, 3.2)V
- Luminosity (RGB): (800, 4000, 900)mcd