COB LEDs


COB (Chip on Board) LEDs are compact LED modules with a bright light output. They consist of a small square or circular substrate which houses multiple LED chips/dies. These are covered with a phosphor coating. The most common colour of COB LED is white, however there a few more colours available as the technology develops.
How do they work?
COB LEDs have a base substrate, made of aluminium or ceramic, on which the LED dies are mounted. The actual LEDs provide a blue light. The number of LED dies and their typical luminous flux determines the “brightness” of the COB LED.
The layer of phosphor, which is an orangey-yellow colour, sits on top of the LED dies. The phosphor converts the blue LED dies into a white light. The type of phosphor creates different colour temperatures.
What is colour temperature?
Colour temperature describes the warmth or coolness of the LED light output. “Warm” COB LEDs offer a yellow-orange light output while “Cool” COB LEDs tend to be a bluer white. Colour temperature is measured in Kelvins with the symbol “K”.
What are the advantages of COB LEDs?
• Higher LED density than traditional LED mounting process
• No need for multiple soldering - just one package
• Bright light output
Uses for COB LEDs:
• General purpose lighting
• Downlights
• High Bay lighting
• Low Bay lighting
• Spotlights
• Solid State Lighting (SSL) replacements

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Description Price Typical Luminous Flux Optical Source Diameter Colour Temperature Radiant Flux Series Viewing Angle Colour Rendering LED Colours Forward Voltage Forward Current Dimensions
New
RS Stock No. 170-9770
Mfr. Part No.L2C3-3090109E06C00
BrandLumileds
£4.899
Each (In a Tube of 100)
Units
650 lm 6.5mm 3000K - LUXEON COB 115 ° 90 White 35 V 400 (Max.)mA 12 x 15 x 1.5mm
RS Stock No. 111-3566
Mfr. Part No.L2C3-3090109E06C00
BrandLumileds
£5.40
Each
Units
650 lm 6.5mm 3000K - LUXEON COB 115 ° 90 White 35 V 400 (Max.)mA 12 x 15 x 1.5mm
New
RS Stock No. 173-6701
Mfr. Part No.L2C5-30801211F1900
BrandLumileds
£9.587
Each (In a Tube of 10)
Units
6305 lm 19mm 3000K - LUXEON COB 115 ° 80 - 37.5 V 1200mA 28 x 28 x 1.5mm
New
RS Stock No. 173-6702
Mfr. Part No.L2C5-30901205F1300
BrandLumileds
£4.69
Each (In a Tube of 20)
Units
2708 lm 13mm 3000K - LUXEON COB 115 ° 90 - 37.5 V 600mA 24 x 20 x 1.5mm
New
RS Stock No. 173-6703
Mfr. Part No.L2C5-30901208F1500
BrandLumileds
£6.142
Each (In a Tube of 20)
Units
4043 lm 15mm 3000K - LUXEON COB 115 ° 90 - 37.5 V 900mA 24 x 20 x 1.5mm
New
RS Stock No. 173-6706
Mfr. Part No.L2C5-30801205F1300
BrandLumileds
£6.25
Each
Units
3137 lm 13mm 3000K - LUXEON COB 115 ° 80 - 37.5 V 600mA 24 x 20 x 1.5mm
New
RS Stock No. 173-6704
Mfr. Part No.L2C5-30901211F1900
BrandLumileds
£9.587
Each (In a Tube of 10)
Units
5455 lm 19mm 3000K - LUXEON COB 115 ° 90 - 37.5 V 1200mA 28 x 28 x 1.5mm
New
RS Stock No. 173-6711
Mfr. Part No.L2C5-30901211F1900
BrandLumileds
£11.50
Each
Units
5455 lm 19mm 3000K - LUXEON COB 115 ° 90 - 37.5 V 1200mA 28 x 28 x 1.5mm
New
RS Stock No. 173-6707
Mfr. Part No.L2C5-30801208F1500
BrandLumileds
£7.98
Each
Units
4717 lm 15mm 3000K - LUXEON COB 115 ° 80 - 37.5 V 900mA 24 x 20 x 1.5mm
New
RS Stock No. 173-6705
Mfr. Part No.L2C5-40801208F1500
BrandLumileds
£6.142
Each (In a Tube of 20)
Units
4905 lm 15mm 4000K - LUXEON COB 115 ° 80 - 37.5 V 900mA 24 x 20 x 1.5mm
New
RS Stock No. 173-6710
Mfr. Part No.L2C5-30901208F1500
BrandLumileds
£7.98
Each
Units
4043 lm 15mm 3000K - LUXEON COB 115 ° 90 - 37.5 V 900mA 24 x 20 x 1.5mm
New
RS Stock No. 173-6699
Mfr. Part No.L2C5-30801208F1500
BrandLumileds
£6.142
Each (In a Tube of 20)
Units
4717 lm 15mm 3000K - LUXEON COB 115 ° 80 - 37.5 V 900mA 24 x 20 x 1.5mm
New
RS Stock No. 173-6709
Mfr. Part No.L2C5-30901205F1300
BrandLumileds
£6.25
Each
Units
2708 lm 13mm 3000K - LUXEON COB 115 ° 90 - 37.5 V 600mA 24 x 20 x 1.5mm
New
RS Stock No. 173-6698
Mfr. Part No.L2C5-30801205F1300
BrandLumileds
£4.69
Each (In a Tube of 20)
Units
3137 lm 13mm 3000K - LUXEON COB 115 ° 80 - 37.5 V 600mA 24 x 20 x 1.5mm
New
RS Stock No. 173-6712
Mfr. Part No.L2C5-40801208F1500
BrandLumileds
£7.98
Each
Units
4905 lm 15mm 4000K - LUXEON COB 115 ° 80 - 37.5 V 900mA 24 x 20 x 1.5mm
New
RS Stock No. 173-6708
Mfr. Part No.L2C5-30801211F1900
BrandLumileds
£11.50
Each
Units
6305 lm 19mm 3000K - LUXEON COB 115 ° 80 - 37.5 V 1200mA 28 x 28 x 1.5mm