
Chip on Board LED Grow Lights have become increasingly popular among indoor gardeners due to their high efficiency and compact design.
These lights use a chip on board (COB) technology, which allows for a high density of LEDs in a small space.
This results in a more even distribution of light, reducing hotspots and increasing yields.
What is a Chip on Board LED Grow Light?
A Chip on Board LED grow light is essentially a compact device that uses multiple LED chips mounted on a thermally efficient substrate. This setup is designed to produce a bright white light output.
The basic elements of a Chip on Board LED grow light include an electrical power supply, a light-emitting chip or 'die', and a phosphor coating. The phosphor coating is what converts the blue light emitted by the chip into white light.
The key to Chip on Board LED grow lights is their ability to provide superior light intensity, better thermal management, and enhanced spectral efficiency compared to traditional LED setups.
What Are?
A Chip on Board (COB) LED grow light is a type of lighting solution that has revolutionized indoor horticulture.
The COB LED is a single device with many LED chips mounted on a thermally efficient substrate placed below a uniform phosphor coating. This construction makes it compact and efficient.
These LEDs are widely used in various applications, including lighting for homes and stores, because they emit a bright white light output from a compact light source.
At its core, a COB LED consists of three basic elements: an electrical power supply, the light-emitting chip, and a phosphor coating.
The light-emitting chip, also known as the blue light pump, is made of a semiconductor material called indium gallium nitride (InGaN) that emits blue photons when energized.
The phosphor coating is responsible for converting the blue light to white, and its chemical composition is controlled to produce light of a specific color temperature.
Here's a breakdown of the basic elements of a COB LED:
- An electrical power supply to provide the energy to drive the LED
- The light-emitting chip or ‘die’, made of indium gallium nitride (InGaN)
- A phosphor coating which converts the blue light to white
What is an LED?
LEDs are a type of light source that produces light when an electric current passes through it.
LED stands for Light Emitting Diode, which is a semiconductor device that converts electrical energy into light energy.
An LED is a compact and energy-efficient light source compared to traditional incandescent bulbs.
LEDs are available in different colors, including white, red, green, and blue.
A single LED chip can be mounted on a substrate to form a module, but multiple LED chips can also be integrated into a single compact unit.
This type of LED is called a Chip on Board (COB) LED, which produces a powerful and uniform light source.
Space-Saving Array
COB LEDs are a space-saving solution for indoor gardens. They eliminate the need for multiple discrete LEDs, resulting in a more compact and robust lighting system.
Their compact design makes them ideal for space-constrained areas. This is especially beneficial for growers who want to maximize their grow room's available area.
COB grow lights are designed with a reduced number of components and tightly packed LED technology. This allows them to occupy less space in your grow room compared with other grow lights.
Despite their compact design, COB grow lights can deliver the same level of output and performance as larger alternatives. They can reach lower leaves and promote more even growth, making them great for larger plants or dense foliage.
Advantages and Benefits
Chip on Board LED grow lights offer a range of advantages and benefits that make them a popular choice for growers.
One of the main advantages is their ability to produce more light output from a smaller area, thanks to the dense array of chips that make up a single CoB LED.
This results in a simpler design and product, with fewer units to solder to the board, making production easier.
A single two-wire power supply is all that's needed for a CoB LED, making electrical design simpler as well.
The optical advantages of CoB LEDs include the ability to use a broad range of optics, such as reflectors, to determine the direction and width of the beam.
COB lights are also great for larger plants or dense foliage, as they reach lower leaves and promote more even growth.
Their energy efficiency and high light output in a compact design make them a great choice for growers.
COBs have a notably lower failure rate compared with SMDs, primarily due to their ability to produce less heat during operation.
Advantages of a
A single CoB LED can contain hundreds of chips forming a dense array, enabling it to produce more light output from a smaller area.
Using a single LED can result in simpler design and product, providing optical advantages for uniform light and efficient optics.
The electrical design is simpler because the CoB LED only requires a single two-wire power supply to the entire array of chips.

Production is simpler with a CoB LED because the number of units to be soldered to the board is lower.
A broad range of optics, usually reflectors, can be used with CoBs of different sizes to determine the direction and width of the beam.
COB lights use multiple LED chips on a single board, providing intense, focused light that penetrates deep into the canopy.
COB LEDs are energy-efficient and offer high light output in a compact design.
COBs have a notably lower failure rate compared with SMDs, primarily due to their ability to produce less heat during operation.
This reduced heat production is partly due to the minimal welding required for COBs, which further reduces the risk of potential failures in the lighting system.
Great Spectrum for Plant Growth
Having the right spectrum of light is crucial for plant growth, and there are specific spectrums that work best for different stages of growth.
During the vegetative stage, a higher blue spectrum is ideal, which helps plants grow strong and healthy.
For flowering stage, a higher red and far-red spectrum is necessary, as it promotes blooming and fruiting.
A full-spectrum light, which includes a balanced mix of all colors, is the best option for all growth stages, providing optimal light for plants to thrive.
Many growers swear by using a combination of warm white and cool white COBs, as it creates a balanced spectrum of light that's easy on the eyes and promotes healthy growth.
Here's a quick rundown of the most commonly used COB colors for plant cultivation:
Key Features and Specifications
The key features and specifications of chip on board LED grow lights are impressive. They are designed to be compact, with dimensions ranging from 22 to 29 cm in width, 21 to 22 cm in depth, and 29 to 76 cm in height.
One of the standout features of these lights is their durability, with some models boasting a lifespan of up to 50,000 hours. This is far longer than traditional grow lights, making them a cost-effective option in the long run.
The recommended height above plants for these lights varies, but most models suggest placing them between 18 and 36 inches above the canopy. This ensures optimal lighting for your plants while also preventing overheating.
Here are some key specifications to consider:
- Weight: 3.4 kilograms
- Footprint: 67 x 76 cm
- IP65 rating for water-proofing
- Frequency: 50-60HZ
- LED lifespan: 50,000 hours
- BTUs: 378
- Plug type: EU, UK, AU, USA, Japan
Better Thermal Management
Better Thermal Management is crucial for LED longevity. COB LEDs are designed with efficient heat sinks and thermal conductive materials, preventing overheating and ensuring stable performance over extended periods.
A well-designed heat sink can make all the difference in maintaining a stable temperature. Aluminum heat sinks, in particular, are effective at dissipating heat.
Active and passive cooling systems are also important for longevity. Look for COB lights with these systems to ensure consistent performance.
COB lights typically have a lifespan ranging from 30,000 to 60,000 hours, depending on the manufacturer's materials and construction.
Here are some key considerations for thermal management in COB LEDs:
- Efficient heat sinks
- Thermal conductive materials
- Active/passive cooling systems
By choosing a COB light with a robust thermal management system, you can ensure stable performance and a long lifespan for your LED grow light.
Full-Spectrum Capability

Full-spectrum capability is a crucial aspect of COB grow lights, allowing them to mimic natural sunlight and promote healthy plant growth. Modern COB LEDs can be tailored to emit a full-spectrum light, including essential wavelengths for photosynthesis.
The full-spectrum capability of COB LEDs includes blue light (400-500 nm), which promotes vegetative growth and strong roots. Red light (600-700 nm) enhances flowering and fruiting, while far-red light (700-800 nm) influences photomorphogenesis and flowering cycles.
To give you a better idea of what this means, here's a breakdown of the different wavelengths and their effects:
- Blue (400-500 nm): Promotes vegetative growth and strong roots.
- Red (600-700 nm): Enhances flowering and fruiting.
- Far-Red (700-800 nm): Influences photomorphogenesis and flowering cycles.
This full-spectrum capability is especially useful in greenhouses, where COB LEDs can supplement natural sunlight and ensure consistent growth during cloudy days or winter months.
Compact and Durable Design
COB grow lights are a great choice for indoor gardens due to their compact and durable design. They eliminate the need for multiple discrete LEDs, resulting in a more robust lighting system.

Their compact size makes them ideal for space-constrained areas. You can expect to save space in your grow room compared to other grow lights.
COB grow lights are designed to be space-efficient, allowing you to maximize your grow room's available area. This is especially important for growers who want to maintain high-quality and effective lighting for their plants.
With a lifespan exceeding 50,000 hours, LED grow lights are built to last. Investing in durable, well-made LEDs saves on replacement costs and ensures consistent lighting for your plants.
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Understanding Technology
Modern COB grow lights are capable of emitting a full-spectrum light, closely mimicking natural sunlight. This includes essential wavelengths for photosynthesis.
The full-spectrum capability of COB grow lights is made up of three main components: blue, red, and far-red light. Blue light (400-500 nm) promotes vegetative growth and strong roots, while red light (600-700 nm) enhances flowering and fruiting. Far-red light (700-800 nm) influences photomorphogenesis and flowering cycles.
Consider reading: Red Light

COB LEDs generate a concentrated beam of light with high Photosynthetic Photon Flux Density (PPFD), ensuring deep canopy penetration. This uniformity reduces shadowing and promotes even growth across all plants.
The dense arrangement of LED chips in a smaller area, combined with the support of a reflector, results in a concentrated and intense light output. This significantly contributes to your flowering plants, such as cannabis.
Here's a breakdown of the different light spectrums used in COB grow lights:
- Blue (400-500 nm): Promotes vegetative growth and strong roots.
- Red (600-700 nm): Enhances flowering and fruiting.
- Far-Red (700-800 nm): Influences photomorphogenesis and flowering cycles.
The compact and durable design of COB LEDs makes them ideal for space-constrained indoor gardens. This is due to the elimination of the need for multiple discrete LEDs, resulting in a more compact and robust lighting system.
Applications and Uses
COB LEDs are a great solution for indoor farming and vertical farming. Their ability to deliver uniform light distribution supports multi-tiered growing setups.
In vertical farms and hydroponic systems, space optimization is key. COB LEDs help achieve this by providing high light intensity.
Their uniform light distribution makes them perfect for multi-tiered growing setups. This allows for more plants to be grown in a smaller space.
COB LEDs are widely used in these types of systems because they can deliver the high light intensity needed for plant growth.
Choosing and Customizing a Chip on Board LED Grow Light
Customizability is a key feature to consider when choosing a chip on board LED grow light. Customizable settings can be adjusted to adapt the light intensity and wavelength to your plants' specific growth stages.
Dimmable lights and adjustable spectrums allow for precise control over the environment, leading to better growth outcomes. This is especially beneficial for growers with diverse plant types.
Some LED grow lights offer customizable settings, such as dimmable lights or adjustable spectrums, which can be tailored to the specific needs of your plants.
Key Considerations for Choosing a Light
COB LEDs offer high light intensity and uniformity, ensuring deep canopy penetration and reducing shadowing across all plants.
The concentrated beam of light generated by COBs provides a Photosynthetic Photon Flux Density (PPFD) that promotes even growth.
In contrast to SMDs, COBs have emerged as a compelling alternative with several advantages, including a broad light spectral spectrum and an extended lifespan.
COBs are a great choice for growers who want efficient light output and deep canopy penetration, as they reduce shadowing and promote even growth.
Their uniform light distribution also ensures that plants receive the light they need to thrive, without any hotspots or dark spots.
Customizability
Customizability is a key feature to consider when choosing a Chip on Board LED grow light. Some models offer customizable settings, such as dimmable lights.
This allows you to adapt the light intensity to your plants' specific growth stages. Customizability can lead to better growth outcomes, especially for diverse plant types.
While not essential for all growers, having control over the light environment can make a big difference.
Cost vs. ROI
When choosing a Chip on Board LED grow light, it's essential to consider the long-term costs and returns on investment.
A higher upfront cost for COB LEDs is often offset by their efficiency and durability, leading to long-term savings on electricity and replacement costs.
While traditional LEDs may be cheaper to purchase initially, COB LEDs require less maintenance and replacement over time, making them a more cost-effective option in the long run.
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Products
Choosing the right chip on board LED grow light can be a daunting task, especially with so many options available. Here are some key features to consider when selecting a product.
The light's lumen output is a crucial factor in determining its effectiveness. The product in question boasts a lumen output of 8615Lm±5%@AC120V and 8508 Lm±5%@AC240V.
When it comes to power draw, look for a product that efficiently uses energy. This product has a power draw of 110W + - 5%@AC120V and 108W + - 5%@AC240V.
The wattage draw is also an important consideration. This product has a wattage draw of 120V: 110 watts ± 5% and 240V: 108 watts ± 5%.
Here are the key specifications for the product:
- Lumen Output: 8615Lm±5%@AC120V, 8508 Lm±5%@AC240V
- Power Draw: 110W + - 5%@AC120V, 108W + - 5%@AC240V
- Wattage Draw: 120V: 110 watts ± 5%, 240V: 108 watts ± 5%
The type of LEDs used can also impact the product's performance. This product features a 1 x Cree CXB3590 COB Array and 16 x Red and Blue Cree and Osram Chips.
The spectrum of the light is also a key consideration. This product emits light in the 450~475nm, 620~630nm, 650~660nm, and White spectrum.
The coverage area of the light is also important to consider. This product has a veg coverage area of 3' x 3 and a flower coverage area of 2' x 2.
The thermal management system is also crucial to prevent overheating. This product features aluminum heat sinks and cooling fans.
Finally, consider the product's dimensions and weight. This product measures 12" x 9" x 8" and weighs 7.7 lbs.
Performance and Efficiency
COB LED grow lights are known for their exceptional performance and efficiency. They minimize energy waste by reducing the number of components required, resulting in higher lumens per watt (lm/W) efficiency compared to traditional LEDs.
Efficient heat sinks and thermal conductive materials in COB LEDs prevent overheating and ensure stable performance over extended periods. This is crucial for LED longevity.
COB LEDs generate a concentrated beam of light with high Photosynthetic Photon Flux Density (PPFD), ensuring deep canopy penetration and uniform growth across all plants. This reduces shadowing and promotes even growth.
COB LED grow lights offer higher power efficiency per input watt, making them an environmentally friendly choice that lowers your power bill and reduces your carbon footprint.
Energy Efficiency
COB LEDs minimize energy waste by reducing the number of components required, resulting in higher lumens per watt (lm/W) efficiency compared to traditional LEDs.
Efficient heat sinks and thermal conductive materials in COB LEDs prevent overheating and ensure stable performance over extended periods.
LED grow lights are known for their efficiency, with some models performing better than others. Look for lights with high photosynthetically active radiation (PAR) output per watt, which measures the usable light for photosynthesis.
COB LED grow lights offer higher power efficiency per input watt, making them an environmentally friendly choice.
Higher lumens per watt (lm/W) efficiency in COB LEDs results in lower energy consumption and reduced energy costs.
High Light Intensity and Uniformity
COB LEDs offer high light intensity and uniformity, which is perfect for deep canopy penetration. This allows for even growth across all plants.
The concentrated beam of light generated by COB LEDs has a high Photosynthetic Photon Flux Density (PPFD), reducing shadowing and promoting even growth.
COB LEDs can achieve a stronger and more vibrant light intensity compared to conventional LED grow lights and other types of lighting. This is due to the dense arrangement of LED chips in a smaller area, combined with the support of a reflector.
In vertical farms and hydroponic systems, COB LEDs deliver uniform light distribution, supporting multi-tiered growing setups. This is critical for space optimization and high light intensity.
COBs are typically spaced at considerable distances on larger fixtures, resulting in a more even coverage of the plants below. This ensures that plants receive uniform illumination from multiple points.
Spectrum Tuning
Spectrum Tuning is a crucial aspect of optimizing COB lighting for plant growth. By adjusting the spectrum, you can tailor the light to the specific needs of your plants at different stages.
During the vegetative stage, plants benefit from a higher blue spectrum, which promotes healthy growth and development. This is especially true for young plants.
Flowering stage plants, on the other hand, require a higher red and far-red spectrum to induce blooming. This is a critical step in the growth cycle.
Here's a breakdown of the spectrum requirements for different growth stages:
By using a COB lighting system that allows for automated spectrum adjustments based on plant growth stages, you can ensure your plants receive the optimal spectrum for their needs. This can lead to healthier, more productive plants.
Less Heat

COB LED grow lights have a simpler design with fewer components, thus producing less heat compared with other types of lights. This reduced heat output is due to the use of materials such as aluminum, copper, or ceramic substrates that act as effective heat conductors.
These materials help dissipate the heat generated by the COB LEDs, reducing the risk of heat damage to both the LED grow lights themselves and the plants they are illuminating. As a result, COB LED grow lights are designed to operate within a safe temperature range.
The heat management design of COB LEDs also includes external heat sinks, which further improve heat dissipation. This ensures that the heat generated by the LEDs is efficiently transferred and dissipated. Excessive heat can damage plants and raise indoor temperatures, especially in enclosed growing spaces.
To give you a better idea of the heat output of COB LEDs, here are some general guidelines:
Keep in mind that the heat output of COB LEDs can vary depending on the manufacturer's design and materials. It's essential to check the manufacturer's heat management design to ensure safe operation and optimal plant growth.
Comparison and Considerations
COB LED grow lights have a higher upfront cost, but their efficiency and durability lead to long-term savings on electricity and replacement costs.
The key difference between COB and traditional LED grow lights lies in their design and functionality. COB LEDs have a high, concentrated beam of light, whereas traditional LEDs have a lower, dispersed light.
Here are some key features to consider when choosing between COB and traditional LED grow lights:
Comparison: vs. Conventional Methods
When comparing COB LED grow lights to traditional methods, the key differences lie in their efficiency and durability. COB LEDs have a higher upfront cost, but their efficiency and durability lead to long-term savings on electricity and replacement costs.
One major advantage of COB LEDs is their high light intensity, which is concentrated into a single beam. This is in contrast to traditional LEDs, which have a lower, dispersed light.
COB LEDs are also more energy efficient, with a higher lm/W efficiency than traditional LEDs. This means they use less energy to produce the same amount of light.

Heat management is another area where COB LEDs excel. They have better heat dissipation, which reduces the risk of overheating. Traditional LEDs, on the other hand, are more prone to overheating.
When it comes to spectrum control, COB LEDs are capable of producing a full spectrum of light. Traditional LEDs, however, are limited by individual diodes.
The lifespan of COB LEDs is also impressive, with some lasting over 50,000 hours. Traditional LEDs typically last between 30,000-50,000 hours.
Here's a summary of the key differences between COB LEDs and traditional LEDs:
Impact of Failures on Output
Losing a single diode in an SMD LED setup may not significantly impact overall light output. This is because SMD LEDs have individual diodes that can function independently.
However, in a COB LED setup, a single failure can lead to a substantial loss of light output. This is because COBs consist of multiple diodes grouped together.
The design of SMD LEDs allows for a more distributed failure mode, whereas COB LEDs are more prone to a cascading failure.
What Are the Disadvantages of?
The chip on board LED grow light has its downsides. High initial cost is a significant disadvantage, with prices ranging from $200 to $1,000 or more, making it a substantial investment for many growers.
Heat buildup is another issue with chip on board LED grow lights. They can reach temperatures of up to 150°F (65°C), which can be problematic for some growers who may not have adequate ventilation.
Inadequate light distribution is also a concern with chip on board LED grow lights. Some models may not provide even coverage, leading to hotspots and reduced yields.
Some growers may also find the limited color spectrum of chip on board LED grow lights to be a disadvantage. These lights typically emit a narrow spectrum of blue and red light, which may not be suitable for all types of plants.
In conclusion, while chip on board LED grow lights have many benefits, they also have some significant disadvantages that growers should be aware of.
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Conclusion and Final Thoughts
If you're looking for high-intensity lights that won't take up much space, chip on board (COB) LEDs are the way to go.
COBs are known for their ability to penetrate deeper, making them ideal for plant growth.
MokoLight COB LEDs stand out from the rest due to their unique features, such as dimmable light output and a full spectrum of wavelengths.
This combination ensures superior light output for your plants over an extended period.
COBs from MokoLight also come with a reassuring 3-year warranty, giving you peace of mind.
Many online customers have given positive reviews about MokoLight's COBs, so you can trust their quality.
If you're looking for a reliable and high-quality COB LED, MokoLight is a great option to consider.
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