Working
3mm yellow LEDs emit light when a forward voltage is applied. The LED typically uses a compound like Gallium Arsenide Phosphide (GaAsP) to produce yellow light. The energy is released as visible light when the electrons recombine with holes in the semiconductor material.
Applications
- Used as indicator lights for electrical devices.
- Commonly used in automotive lighting (e.g., turn signals).
- Warning and caution lights for safety devices.
- Used in digital clocks and displays.
- Lighting in signs and signal systems.
Specifications
- Forward Voltage: 1.8–2.2V
- Forward Current: 20mA (typical)
- Brightness: 1000–3000 mcd
- Wavelength: 590–595 nm
- Size: 3mm diameter
Pinout
The 3mm yellow LED has two pins:
- Anode (+): The longer pin, connected to the positive terminal of the power supply.
- Cathode (-): The shorter pin, connected to the ground (GND).
