5mm RGB LED 4 Pin Common Cathode Diffused 

RGB 4-Legged Common Cathode LED that can light in Red, Blue and Green colors. It is 5mm in size and has a 60 degree viewing angle. The longest leg is the minus (-) end. Colors can be controlled one by one by giving + voltage to the other legs, that is, it is the common cathode.

Technical Specifications
RGB LED package
5mm diameter
Red: 630 nm wave length, Green: 525 nm, Blue: 460 nm
Red: 2-2.2V Voltage, at 20mA current, Green: 3.0-3.2V, Blue: 3.0-3.2V
Red : 3000 mcd typical brightness, Green: 5000 mcd, Blue: 900 mcd