Description
This 3mm bi-color red/yellow LED is a versatile indicator component that combines two LED chips (red and yellow) in a single package. It is an ideal solution for applications requiring two-state indication, such as power status, error alerts, and operational modes, within a compact footprint .
The component features a 3-pin design and typically operates with a common cathode connection (where the central lead is shared) . It emits a bright red light at a wavelength of approximately 625nm and a yellow light around 588nm-590nm . Each color requires a low forward voltage of 2.0V to 2.5V and a current of 20mA, making it directly compatible with standard microcontroller logic levels from Arduino, Raspberry Pi, and other 5V or 3.3V systems .
This through-hole LED, with a viewing angle of around 60°, is perfect for status indicators on PCBs, panel displays, consumer electronics, DIY projects, and diagnostic equipment .
Key Specifications
| Specification | Detail |
|---|---|
| Model | 3mm Bi-Color Red/Yellow LED |
| LED Diameter | 3mm (T-1) |
| LED Colors | Red & Yellow |
| Number of Pins | 3 (Common Cathode or Anode) |
| Forward Voltage | Red: 2.0-2.5V, Yellow: 2.0-2.5V |
| Forward Current | 20mA (per color) |
| Wavelength | Red: ~625nm, Yellow: ~588nm-590nm |
| Luminous Intensity | Red: 30-40mcd, Yellow: 20-30mcd |
| Viewing Angle | Approx. 60° |
| Mounting Type | Through Hole (THT) |
