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
RS Stock No. 920-9417
Mfr. Part No.ILO-26FF4-33UL-EP211.
£38.59
Each
Units
18460 lm - 33mm 6500K - DURIS S 8 120 ° 80 White - 1500mA 38 x 38 x 1.4mm -
RS Stock No. 920-9414
Mfr. Part No.ILO-26FF4-33NW-EP211.
£26.70
Each
Units
18460 lm - 33mm 4000K - DURIS S 8 120 ° 80 White - 1500mA 38 x 38 x 1.4mm -
RS Stock No. 920-9401
Mfr. Part No.ILO-12FF4-23NW-EP211.
£18.69
Each
Units
8520 lm - 23mm 4000K - DURIS S 8 120 ° 80 White - 1500mA 28 x 28 x 1.4mm -
RS Stock No. 920-9348
Mfr. Part No.ILO-01FF5-13NW-EC211.
£3.188
Each (In a Pack of 5)
Units
710 lm - 13mm 4000K - DURIS S 8 120 ° 80 White - 150mA 19 x 19 x 1.4mm -
RS Stock No. 920-9332
Mfr. Part No.ILO-01TT1-09WM-EC211.
£4.336
Each (In a Pack of 5)
Units
1210 lm - 9mm 3000K - DURIS S 10 120 ° 80 White - 350mA 13.5 x 13.5 x 1.4mm -
RS Stock No. 920-9350
Mfr. Part No.ILO-04FF5-13NW-EP211.
£7.49
Each
Units
2840 lm - 13mm 4000K - DURIS S 8 120 ° 80 White - 600mA 19 x 19 x 1.4mm -
RS Stock No. 920-9394
Mfr. Part No.ILO-09FF4-23NW-EC211.
£10.86
Each
Units
6390 lm - 23mm 4000K - DURIS S 8 120 ° 80 White - 750mA 28 x 28 x 1.4mm -
RS Stock No. 920-9366
Mfr. Part No.ILO-01TT1-13WM-EC211.
£5.55
Each
Units
1210 lm - 13mm 3000K - DURIS S 10 120 ° 80 White - 350mA 19 x 19 x 1.4mm -
RS Stock No. 920-9382
Mfr. Part No.ILO-04TT1-23NW-EP211.
£16.02
Each
Units
4840 lm - 23mm 4000K - DURIS S 10 120 ° 80 White - 1400mA 28 x 28 x 1.4mm -
RS Stock No. 920-9344
Mfr. Part No.ILO-01FF5-13WM-EC211.
£3.188
Each (In a Pack of 5)
Units
658 lm - 13mm 3000K - DURIS S 8 120 ° 80 White - 150mA 19 x 19 x 1.4mm -
RS Stock No. 920-9408
Mfr. Part No.ILO-05FF4-23NW-EC211.
£10.21
Each
Units
3550 lm - 23mm 4000K - DURIS S 8 120 ° 80 White - 750mA 28 x 28 x 1.4mm -
RS Stock No. 920-9376
Mfr. Part No.ILO-04FF4-19WM-EC211.
£5.60
Each
Units
2632 lm - 19mm 3000K - DURIS S 8 120 ° 80 White - 750mA 24 x 24 x 1.4mm -
RS Stock No. 920-9341
Mfr. Part No.ILO-01TT1-09NW-EC211.
£4.336
Each (In a Pack of 5)
Units
1210 lm - 9mm 4000K - DURIS S 10 120 ° 80 White - 350mA 13.5 x 13.5 x 1.4mm -
RS Stock No. 920-9385
Mfr. Part No.ILO-04FF4-19NW-EC211.
£9.66
Each
Units
2840 lm - 19mm 4000K - DURIS S 8 120 ° 80 White - 750mA 24 x 24 x 1.4mm -
RS Stock No. 920-9388
Mfr. Part No.ILO-04TT1-23WM-EP211.
£14.32
Each
Units
4840 lm - 23mm 3000K - DURIS S 10 120 ° 80 White - 1400mA 28 x 28 x 1.4mm -
RS Stock No. 920-9379
Mfr. Part No.ILO-03FF4-19WM-EC211.
£4.23
Each
Units
1974 lm - 19mm 3000K - DURIS S 8 120 ° 80 White - 750mA 24 x 24 x 1.4mm -
RS Stock No. 920-9405
Mfr. Part No.ILO-12FF4-23UL-EP211.
£18.69
Each
Units
8520 lm - 23mm 6500K - DURIS S 8 120 ° 80 White - 1500mA 28 x 28 x 1.4mm -
RS Stock No. 920-9391
Mfr. Part No.ILO-09FF4-23WM-EC211.
£10.86
Each
Units
5922 lm - 23mm 3000K - DURIS S 8 120 ° 80 White - 750mA 28 x 28 x 1.4mm -
RS Stock No. 920-9363
Mfr. Part No.ILO-05FF5-13NW-EP211.
£2.42
Each
Units
3550 lm - 13mm 4000K - DURIS S 8 120 ° 80 White - 750mA 19 x 19 x 1.4mm -
RS Stock No. 920-9357
Mfr. Part No.ILO-04FF5-13WM-EP211.
£4.99
Each
Units
2632 lm - 13mm 3000K - DURIS S 8 120 ° 80 White - 600mA 19 x 19 x 1.4mm -