COB LEDs are basically multiple LED chips (typically nine or more) bonded directly to a substrate by the manufacturer to form a single module.Chip-on-Board or "COB" refers to the mounting of a bare LED chip in direct contact with a substrate (such as silicon carbide or sapphire) to produce LED arrays. COB LEDs have a number of advantages over older LED technologies, such as Surface Mounted Device ("SMD") LEDs or Dual In-line Package ("DIP") LEDs. Most notably, COB technology allows for a much higher packing density of the LED array, or what light engineers refer to as improved "lumen density". For example, using COB LED technology on a 10mm x 10mm square array results in 38 times more LEDs compared to DIP LED technology and 8.5 times more LEDs compared to SMD LED technology (see diagram below). This results in higher intensity and greater uniformity of light. Alternatively, using COB LED technology can greatly reduce the footprint and energy consumption of the LED array while keeping light output constant. For example, a 500 lumen COB LED array can be many times smaller and consume substantially less energy than a 500 lumen SMD or DIP LED Array.
The advantages of Chip-on-Board LED arrays include:
1.Compactness due to the small size of chip.
2.High-Intensity, particularly at close distances.
3.High-Uniformity, even at close working distances.
4.Design Simplicity because only 1 circuit and 2 contacts are required.
5.Superior Thermal Performance for increased life, stability and reliability.
let me introduce you to the four best of 2021 COB LED Grow Lights.
ECO Farm GS2 190W CREE COB Full SpectrumLED Grow Light
COB TECHNOLOGY LEDS: CREE COB is known for high power and stability. COB, higher brightness, smaller thermal resistance, less light attenuation and longer life.Our COB itself is a full spectrum design with high PPFD value which can promote faster and better plant growth
FULL SPECTRUM: The CREE COB LED itself is a full spectrum lamp integrated design bead. We have added additional light beads in various bands to ensure the scientific of the full spectrum.GS2 contains 10x CREE 10W COB, 40x SMD 3W;GS4 contains 20x CREE 10W COB, 80x SMD 3W；
MAXIMUM ENERGY SAVING： The GS2 actual power is 190watt.Best hang height at 24",Core Coverage area at 3*4ft. The GS4 actual power is 380watt.Best hang height at 24",Core Coverage area at 3*4ft.
Phlizon 2000W LED Grow Light CREE COB
CREE COB LEDS: CREE COB is known for high power and stability. CREE COB, higher brightness, smaller thermal resistance, less light attenuation and longer life.CREE COB itself is a full spectrum design with high PPFD value which can promote faster and better plant growth
EXTREMELY HIGH PPFD: PPFD, Photosynthetic Photon Flux Density. The bigger the density, the higher the value, the better the plant. COB LED has highest PPFD output and much brighter and more efficient than traditional LEDs.
FULL SPECTRUM: Full spectrum lamp integrated design bead. We have added additional light beads in various bands to ensure the full spectrum of science.
MAXIMUM ENERGY SAVING: It is more scientifically and energy-efficient than HPS HID and MH. It serves both herb/veg/bloom and is convinient for you.
OPTIC 6 GEN3 COB LED Grow Light 605W (UV/IR) 3000k & 5000k COBs
The new commercial grade Optic 6 Generation 3 COB LED Grow Light now with 50% more powerful COBs pumping out a monumental 44% more light with the same wattage while running significantly cooler. Optic 6 Gen3 now with upgraded COBs features three of CREE's XLAMP CXB2540 warm white COBs and three Cool White COBs. Optic 6 is a full cycle COB LED Grow Light designed to be able to grow from seedling through flower with a Spectrum your plants will feast on at every phase.
1.Three warm white 3000k COBs & Three cool white 5000k COBs.
2.6 x 80-watt CREE XLamp COB LEDs driven at 55 watts each.
3.Total of 330 true watts driven through the highly efficient CREE COBs.
4.96 x 5-watt supplemental Bridgelux/Epistar LEDs driven at 270 watts total.
5.Red diodes: Epistar Dual Core Diodes.
6.Blue and White diodes: USA made Bridgelux Dual Core Blues, Dual Core White LEDs.
AGLEX 1200W COB LED Grow Light
This cob led grow light 3000w adds 3pcs developed 3400K COBs. which is verified playing an important rols in plants growth, will bring much better results
PPFD, Photosynthetic Photon Flux Density，Hanging at 24", the PPFD is 1855 umol/m2s. The bigger the density, the higher the value, the better the plant. COB LED has highest PPFD output. COB LED is much brighter and more efficient than traditional LEDs. This 3000w cob grow light will bring better results.