LEDs

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. 700-7929
Mfr. Part No.SML-310LTT86
BrandROHM
HK$2.101
Each (In a Pack of 20)
units
Red 1608 (0603) Surface Mount 1 2.5 V 10 mcd - 2 - - Rectangle 660 nm 1.6 x 0.8 x 0.8mm -
RS Stock No. 169-0550
Mfr. Part No.SML-310LTT86
BrandROHM
HK$0.528
Each (On a Reel of 3000)
units
Red 1608 (0603) Surface Mount 1 2.5 V 10 mcd - 2 - - Rectangle 660 nm 1.6 x 0.8 x 0.8mm -
RS Stock No. 320-8550
Mfr. Part No.SLR-322VC3F
BrandROHM
HK$3.06
Each (In a Pack of 10)
units
Red 3mm (T-1) Through Hole 1 2 V 16 mcd - 2 35 ° - Rectangle 630 nm 3.1mm -
RS Stock No. 752-6880
Mfr. Part No.SMLE13WBC8W1
BrandROHM
HK$3.793
Each (In a Pack of 10)
units
White 1608 (0603) Surface Mount 1 2.9 V 120 mcd - 2 - - Rectangle - 1.6 x 0.8 x 0.36mm -
RS Stock No. 169-0571
Mfr. Part No.SML-A12MTT86
BrandROHM
HK$1.22
Each (On a Reel of 3000)
units
Green 1613 (0605) Surface Mount 1 2.1 V 40 mcd - 2 - - Rectangle 570 nm 1.6 x 1.15 x 0.55mm -
RS Stock No. 700-8017
Mfr. Part No.SML-A12MTT86
BrandROHM
HK$4.28
Each (In a Pack of 5)
units
Green 1613 (0605) Surface Mount 1 2.1 V 40 mcd - 2 - - Rectangle 570 nm 1.6 x 1.15 x 0.55mm -
RS Stock No. 752-6704
Mfr. Part No.SML-012PTT86A
BrandROHM
HK$3.28
Each (In a Pack of 10)
units
Green 3020 (1208) Surface Mount 1 2.1 V 18 mcd - 2 - - Rectangle 564 nm 3 x 2mm -
RS Stock No. 320-8538
Mfr. Part No.SLR-322MC3F
BrandROHM
HK$2.93
Each (In a Pack of 10)
units
Yellow-Green 3mm (T-1) Through Hole 1 2.1 V 25 mcd - 2 35 ° - Rectangle 572 nm 3.1mm -
RS Stock No. 752-6916
Mfr. Part No.SMLP13WBC8W1
BrandROHM
HK$3.437
Each (In a Pack of 10)
units
White 1006 (0402) Surface Mount 1 2.9 V 150 mcd - 2 - - Rectangle - 1 x 0.6 x 0.2mm -
RS Stock No. 700-3595
Mfr. Part No.SML-P12PTT86
BrandROHM
HK$2.65
Each (In a Pack of 10)
units
Green 1006 (0402) Surface Mount 1 2.2 V 13 mcd - 2 - - Square 560 nm 1 x 0.6 x 0.2mm -
RS Stock No. 182-8132
Mfr. Part No.CSL0901YT
BrandROHM
HK$3.211
Each (In a Pack of 50)
units
Yellow 1608 (0603) Surface Mount 1 2.1 V 320 mcd - 3 - - - 593 nm 1.6 x 0.8 x 1.24mm -
RS Stock No. 320-8645
Mfr. Part No.SLR-332VC3F
BrandROHM
HK$3.06
Each (In a Pack of 10)
units
Red 3mm (T-1) Through Hole 1 2 V 10 mcd - 2 85 ° - Round 630 nm 3.2mm -
RS Stock No. 178-879
Mfr. Part No.SLR-342DU3F
BrandROHM
HK$2.96
Each (In a Pack of 10)
units
Orange 3mm (T-1) Through Hole 1 2 V 16 mcd - 2 40 ° - Round 605 nm 3.1mm -
RS Stock No. 133-2878
Mfr. Part No.SML-D15DWT86
BrandROHM
HK$2.49
Each (In a Pack of 50)
units
Orange 1608 (0603) Surface Mount 1 2 V 224 mcd - 2 - - Rectangular 607 nm 1.6 x 0.8 x 0.55mm -
RS Stock No. 161-2715
Mfr. Part No.SLR-325VRT31
BrandROHM
HK$2.78
Each (In a Pack of 50)
units
Red SLR-325 Through Hole 1 2 V 10 mcd - 2 40 ° - Dome 650 nm 6 x 3.8 x 5.5mm -
RS Stock No. 168-2435
Mfr. Part No.SLI-343U8RC3F
BrandROHM
HK$2.46
Each (In a Pack of 50)
units
Red SLI-343 Through Hole 1 2.2 V 330 mcd 54mW 2 40 ° - Dome 630 nm 3.8 Dia.x 5.4mm -
RS Stock No. 124-6872
Mfr. Part No.SML-H12M8TT86
BrandROHM
HK$2.28
Each (In a Pack of 50)
units
Yellow-Green 2012 (0805) Surface Mount 1 2.2 V 25 mcd - 2 - - Rectangular 575 nm 2 x 1.25 x 0.8mm -
RS Stock No. 182-8134
Mfr. Part No.SLD430BD2W3F
BrandROHM
HK$2.541
Each (In a Pack of 20)
units
Blue - Through Hole 1 3.2 V 560 mcd - 2 140 ° - Oval 475 nm 4.25 x 3 x 5mm -
RS Stock No. 320-8667
Mfr. Part No.SLR-332VR3F
BrandROHM
HK$3.342
Each (In a Pack of 10)
units
Red 3mm (T-1) Through Hole 1 2 V 10 mcd - 2 85 ° - Round 630 nm 3.2mm -
RS Stock No. 161-2729
Mfr. Part No.SML-S13YTT68
BrandROHM
HK$3.37
Each (In a Pack of 25)
units
Yellow SML-S1 Surface Mount 1 2 V 1400 mcd - 2 - - Dome 593 nm 3.2 x 1.6 x 1.58mm -