The 5mm Red LED is a standard through-hole optoelectronic semiconductor device that emits a classic red light when forward-biased. It features a transparent or colored 5mm plastic dome package that serves as a lens to focus the light beam. Internally, the component utilizes Gallium Arsenide Phosphide (GaAsP) or Aluminum Gallium Indium Phosphide (AlGaInP) semiconductor material to convert electrical energy into light. The device is built with two radial wire leads: a longer positive lead (anode) and a shorter negative lead (cathode), accompanied by a flat edge on the epoxy housing to ensure correct layout orientation. It is the most common component used for power indicators, circuit testing, diagnostic displays, and electronic signage.Â
Key Features
- Standard through-hole package: Features a universal 5mm radial lead design for quick breadboard prototyping and PCB mounting.
- AlGaInP/GaAsP technology: Utilizes efficient semiconductor compounds to produce a stable, highly visible red color spectrum.
- Low forward voltage: Requires a lower operating voltage than blue or green LEDs, reducing power drops across circuits.
- Integrated focus lens: Encased in a clear or red-tinted epoxy dome that controls the directional output of the light beam.
- Polarity indicator: Built with uneven lead lengths and a flat-edge notched rim to prevent accidental reverse voltage damage.
- Solid-state durability: Free from fragile filaments, ensuring a long operational lifespan with high resistance to shock.
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