RGBLED

5mm water clear LED's with 4 pins.

The 2nd pin (from the left, with the flat spot oriented to the left) is a common cathode ground.

Pin 1 is Red, Pin 3 is Blue, Pin 4 is Green, on newer versions the Blue and Green maybe switched.

Recommended current limiting of 20ma max is advized, 30ma is the noted max at 1/10th duty cycle at 10khz.

When driving at 5v, a 150 ohm resistor for Red, and a 100 ohm resistor for each Green and Blue limits current to around 20ma.

        1   2   3   4
        |   |   |   |
Color:  R   -   B   G
Volts: 2.0 0.0 3.2 3.2