20PCs Dual Color Red Green 3mm LEDs Com-Anode

Description Pin length:> 22mm Diameter: 3mm Voltage range :3.0 – 3 .2 V Current range: 3mA – 10mA The bulb is vaporous About the voltage: Brightness increases as the voltage rises, LED is a current-controlled device, so that not an accurate voltage value ,you should note the drive current rather than drive voltage, typical LED is driven using constant current source, For not very precise occasion, you can use a resistor in series to achieve the “approximate constant” drive resistor according to Ohm’s law calculation)