Working
Red LEDs operate by emitting light when a forward voltage is applied across their semiconductor junction. The semiconductor material emits red light within a specific wavelength range (typically 620–750nm) due to electron-hole recombination.
Applications
- Used as status indicators in electronic devices.
- Commonly found in traffic signals and warning lights.
- Used in remote controls for infrared signaling.
- Applied in decorative lighting and LED displays.
- Utilized in medical devices for therapy and diagnostics.
Specifications
- Forward Voltage: 1.8–2.2V
- Forward Current: 20mA (typical)
- Wavelength: 620–750nm
- Brightness: 500–1500 mcd
- Viewing Angle: 20–30 degrees
Pinout
Red LEDs have two pins:
- Anode (+): The longer pin, connected to the positive terminal of the power supply.
- Cathode (-): The shorter pin, connected to the ground (GND).
