Big chip water clear 4 pin 5mm RGB LED - common cathode

These LEDs contain three separate LED "14 mil" chips, red, green and blue. The green and blue are actually rectangular, but all three chips are much larger than typical 20mA RGB LEDs.

By driving the three chips separately, you can produce any colour that you wish, including white light.

They are packaged in the standard 5mm water clear LED package but have 4 leads, not 2, with a 1.25mm pin spacing (there is one common cathode lead and three separate anode leads - one for each colour).

Specs are: Red: 4000-5000mcd; Green: 14,000-16,000mcd; Blue: 6000-8000mcd. Continuous current per LED chip is 20mA (60mA for total package), but with such big chips, you could drive them harder if you provide adequate heatsinking.