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 Luminous Intensity Optical Source Diameter Colour Temperature Radiant Flux Series Viewing Angle Colour Rendering LED Colours Forward Voltage Forward Current Dimensions Automotive Standard Priced to Clear
RS Stock No. 123-5693
Mfr. Part No.L2C5-30901211E19C0
BrandLumileds
£22.73
Each
Units
4215 lm - 18.5mm 3000K - LUXEON CoB with CrispWhite (Gen 2) 115 ° 90 (Min.) White 38 V - 28 x 28 x 1.5mm - -
RS Stock No. 146-1822
Mfr. Part No.L2C5-30901211E19C0
BrandLumileds
£17.869
Each (In a Tube of 50)
Units
4215 lm - 18.5mm 3000K - LUXEON CoB with CrispWhite (Gen 2) 115 ° 90 (Min.) White 38 V - 28 x 28 x 1.5mm - -
RS Stock No. 123-5687
Mfr. Part No.L2C5-30901202E06C0
BrandLumileds
£6.56
Each
Units
651 lm - 6.5mm 3000K - LUXEON CoB with CrispWhite (Gen 2) 115 ° 90 (Min.) White 38 V - 15 x 12 x 1.5mm - -
RS Stock No. 170-9799
Mfr. Part No.L2C5-30901202E06C0
BrandLumileds
£4.54
Each (In a Tube of 100)
Units
651 lm - 6.5mm 3000K - LUXEON CoB with CrispWhite (Gen 2) 115 ° 90 (Min.) White 38 V - 15 x 12 x 1.5mm - -
RS Stock No. 170-9890
Mfr. Part No.L2C2-35901211E1900
BrandLumileds
£15.638
Each (In a Tube of 50)
Units
4801 lm - 18.5mm 3500K - LUXEON CoB Gen2 115 ° 90 White 35 V 2400mA 28 x 28 x 1.5mm - -
RS Stock No. 897-8923
Mfr. Part No.L2C2-35901211E1900
BrandLumileds
£15.34
Each
Units
4801 lm - 18.5mm 3500K - LUXEON CoB Gen2 115 ° 90 White 35 V 2400mA 28 x 28 x 1.5mm - -
RS Stock No. 170-9801
Mfr. Part No.L2C5-30901203E09C0
BrandLumileds
£4.394
Each (In a Tube of 100)
Units
1006 lm - 9mm 3000K - LUXEON CoB with CrispWhite (Gen 2) 115 ° 90 (Min.) White 38 V - 19 x 16 x 1.5mm - -
RS Stock No. 123-5689
Mfr. Part No.L2C5-30901203E09C0
BrandLumileds
£4.32
Each
Units
1006 lm - 9mm 3000K - LUXEON CoB with CrispWhite (Gen 2) 115 ° 90 (Min.) White 38 V - 19 x 16 x 1.5mm - -
RS Stock No. 123-5696
Mfr. Part No.L2C5-33HG1208E1500
BrandLumileds
£8.63
Each
Units
3450 lm - 15mm 3250K - LUXEON CoB with CrispColor - 90 (Min.) White - - 24 x 20 x 1.5mm - -
RS Stock No. 170-9806
Mfr. Part No.L2C5-33HG1208E1500
BrandLumileds
£8.769
Each (In a Tube of 100)
Units
3450 lm - 15mm 3250K - LUXEON CoB with CrispColor - 90 (Min.) White - - 24 x 20 x 1.5mm - -
RS Stock No. 111-3587
Mfr. Part No.L2C5-40901205E1300
BrandLumileds
£13.68
Each
Units
2601 lm - 13mm 4000K - LUXEON COB Gen3 115 ° 90 White 35 V 1200 (Max.)mA 20 x 24 x 1.5mm - -
RS Stock No. 170-9775
Mfr. Part No.L2C5-40901205E1300
BrandLumileds
£12.774
Each (In a Tube of 100)
Units
2601 lm - 13mm 4000K - LUXEON COB Gen3 115 ° 90 White 35 V 1200 (Max.)mA 20 x 24 x 1.5mm - -
RS Stock No. 170-9779
Mfr. Part No.L2C5-40701211E1900
BrandLumileds
£21.102
Each (In a Tube of 50)
Units
6726 lm - 19mm 4000K - LUXEON COB Gen3 115 ° 70 White 34.8 V 2400 (Max.)mA 28 x 28 x 1.5mm - -
RS Stock No. 111-3591
Mfr. Part No.L2C5-40701211E1900
BrandLumileds
£25.41
Each
Units
6726 lm - 19mm 4000K - LUXEON COB Gen3 115 ° 70 White 34.8 V 2400 (Max.)mA 28 x 28 x 1.5mm - -
RS Stock No. 170-9800
Mfr. Part No.L2C5-30901202E09C0
BrandLumileds
£3.215
Each (In a Tube of 100)
Units
679 lm - 9mm 3000K - LUXEON CoB with CrispWhite (Gen 2) 115 ° 90 (Min.) White 38 V - 19 x 16 x 1.5mm - -
RS Stock No. 111-3586
Mfr. Part No.L2C5-40901202E0900
BrandLumileds
£7.30
Each
Units
858 lm - 9mm 4000K - LUXEON COB Gen3 115 ° 90 White 34.5 V 400 (Max.)mA 16 x 19 x 1.5mm - -
RS Stock No. 170-9889
Mfr. Part No.L2C2-40901211E1900
BrandLumileds
£15.638
Each (In a Tube of 50)
Units
5022 lm - 18.5mm 4000K - LUXEON CoB Gen2 115 ° 90 White 35 V 2400mA 28 x 28 x 1.5mm - -
RS Stock No. 170-9774
Mfr. Part No.L2C5-40901202E0900
BrandLumileds
£5.85
Each (In a Tube of 100)
Units
858 lm - 9mm 4000K - LUXEON COB Gen3 115 ° 90 White 34.5 V 400 (Max.)mA 16 x 19 x 1.5mm - -
RS Stock No. 897-8920
Mfr. Part No.L2C2-40901211E1900
BrandLumileds
£15.34
Each
Units
5022 lm - 18.5mm 4000K - LUXEON CoB Gen2 115 ° 90 White 35 V 2400mA 28 x 28 x 1.5mm - -
RS Stock No. 123-5688
Mfr. Part No.L2C5-30901202E09C0
BrandLumileds
£3.26
Each
Units
679 lm - 9mm 3000K - LUXEON CoB with CrispWhite (Gen 2) 115 ° 90 (Min.) White 38 V - 19 x 16 x 1.5mm - -