Visible LEDs are light emitting devices that generate visible illumination when charged with electrical currents. The brightness of visible LEDs depend on the ranges of power strength emitted from the diodes or twin terminal structures located on the insides.

What are visible LEDs used for?

Visible LEDs are typical in electronic components such as indicator lamps, used in the automotive industry. They are also used in signage and displays such as backlighting for billboards and posters. Visible LEDs are found in everyday products like calculators, digital watches, and smart devices.

Types of visible LEDs

Visible LEDs have different visible lighting features:

  • Flashing LEDs are attention seeking or warning indicators operated by multivibrator circuits, which flash at preset intervals.
  • Bi-colour LEDs have two different coloured LED emitters in one unit to depict system status, for example 'on' or 'off'.
  • Tri-colour LEDs have three LED emitters in one unit producing different colours, with the most common example being traffic light systems.
  • RGB (red, green, blue) LEDs have built-in control units to produce combinations of the primary colours and are mostly used in decorative and entertainment applications.

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Description Price LED Colours Package Type Mounting Type Number of LEDs Forward Voltage Luminous Intensity Radiant Flux Number of Pins Viewing Angle Luminous Flux Lens Shape Dominant Wavelength Dimensions Colour Temperature
RS Stock No. 908-7309
Mfr. Part No.OVLAW4CB7
Each (In a Pack of 50)
White 3mm (T-1) Through Hole 1 4 V 6200 mcd - 2 40 ° - Round - - -
RS Stock No. 908-7302
Mfr. Part No.OVLLG8C7
Each (In a Pack of 50)
Green 5mm (T-1 3/4) Through Hole 1 4 V 2400 mcd - 2 85 ° - Round 531 nm - -
RS Stock No. 908-7352
Each (In a Pack of 50)
RGB 3210 (1204) Surface Mount 3 2.4 V, 3.6 V 150 mcd, 250 mcd, 450 mcd - 4 160 ° - Dome 485 nm, 535 nm, 635 nm - -
RS Stock No. 908-7315
Mfr. Part No.OVLLY8C7
Each (In a Pack of 100)
Yellow 5mm (T-1 3/4) Through Hole 1 2.4 V 980 mcd - 2 100 ° - Flat Top 595 nm - -