This LED module contains two LEDs in the colors red and green, which are connected to each other via a common cathode. This means that both LEDs share the same negative connection, which simplifies the circuit. The LEDs require a forward voltage between 2.0 V and 2.5 V and operate at a current of 20 mA.

This module is ideal for applications where colored signals or status indicators are required. By combining red and green, you can display different states or information by illuminating either one of the two colors or both at the same time.

The module is ideal for projects where visual feedback is important, such as in control and monitoring systems where the display of operating states or warning signals is required. Its compact size and easy integration make it a practical and versatile component for a wide range of applications.
Type    3-pin common-cathode bi-color (red + green)
Forward Voltage (Vf)    2.0–2.5 V per color
Forward Current (If)    ~10 mA typical, 20 mA max per color
On-board Resistor    0 Ω jumper (no limiting) — add 220 Ω @ 5 V / 120 Ω @ 3.3 V per color
Diameter    5 mm (KY-029 = 3 mm)
Package    Diffuse
Colors    Red + Green (mix to yellow)
Beam Angle    150°
Wavelength    Red 644 nm / Green 571 nm
Luminous Intensity    20–40 / 40–80 mcd