COB LED - What It Is? Is It Better?

What is a COB LED?

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How Long Do COB LEDs Last?

When Using Battery Power, Why are COB LEDs So Important?

What are the Differences between Normal Led and COB LED?

Differences between COB LEDs and SMD LEDs

Why Choose the COB LED?

The Advantages and Disadvantages of COB LED

Multiple Uses of COB LED

Conclusion

LED lights are continuously being upgraded to increase their usability, adaptability, and energy efficiency. Compared to standard incandescent lights, LED lights are extremely popular since they may last up to 25 times longer while using less power.

COB and SMD LED lights are two types of LED lights available today. Both of these components create high-quality illumination, have a lengthy life expectancy, and offer the highest efficiency to date.

Here, we will discuss COB LEDs, the latest in the LED industry, which provide several advantages over previous options.

What is a COB LED?

One of the most recent developments in the world of LEDs is "Chip on Board" (COB) technology. Compared to other standards, it is quite recent and innovative.

COB lights consist of an arrangement of LED chips tightly packed and attached to a silicon carbide base. As a result, one large LED chip with outstanding illumination uniformity is created. This makes it perfect for professionals such as filmmakers and photographers.

COB chips generally feature nine or more diodes. Regardless of the number of diodes, COB chips only have two contacts and one circuit. On a large chip, this can result in more powerful lighting of up to 250 lumens (at 20mA). The panel-like aspect of COB LED lights is due to the chip's basic circuit design.

Unlike SMD LED lights, COB LED lights cannot be utilized to make color-changing lamps. This is due to the fact that there are only two contacts and one circuit. To achieve the color-changing illusion, several modification channels are needed. Hence, COB LED lights are effective in single-color applications.

How Long Do COB LEDs Last?

The longevity of a COB LED is determined by its usage and heat exposure. On average, a COB LED has a rated lifetime of 50,000 hours. This is assuming an average usage of 12 hours per day.

When Using Battery Power, Why are COB LEDs So Important?

There has always been a trade-off between high-quality lumen output (brightness) and the duration of runtime through battery operation when building a battery-powered lighting system. If you use the same size battery, the more high-quality illumination you want, the shorter the runtime will be. This has become less of a concern with the emergence of COB LED tech.

COB LEDs with little power can produce exceedingly high-quality, ultra-bright light. As a result, a COB LED-based lighting system may be powered for extended periods using a relatively small and lightweight lithium-ion battery pack.

What Are the Differences Between Normal LED and COB LED?

A basic understanding of Surface-Mounted Device (SMD) LEDs is required. They are the most widely used LEDs on the market today. The LED chip is firmly fused to a printed circuit board and widely utilized due to its adaptability, such as in the notification light on a smartphone. The number of diodes and contacts on SMD LED chips is one of their most distinguishing features.

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SMD LED chips can have more than two contacts. On a single chip, up to three diodes can be found, each with its own circuit. Each circuit would use an anode and a cathode, resulting in 2, 4, or 6 connections on a chip.

Differences Between COB LEDs and SMD LEDs

SMD LED chips can include up to three diodes on a single chip, each with its own circuit. Each circuit in such a chip contains a single anode and one cathode, resulting in 2, 4, or 6 connections. COB chips typically have nine or more diodes. Regardless of the number of diodes, COB chips have two contacts and one circuit. COB LED lights have a panel-like appearance, whereas SMD LED lights look like a collection of smaller lights due to this straightforward circuit design.

The SMD LED chip could have a red, green, and blue diode. By employing those three diodes, you can generate any hue simply by altering the output level. However, COB LED lights have only two contacts and one circuit. They can't be used to create color-changing lights. To achieve the color-changing appearance, multiple channel modifications are needed. Therefore, COB LED lights are effective in single-color applications but not in multi-color uses.

The luminosity of SMD chips is well known, and they may generate 50 to 100 lumens per watt. COB is noted for its high heat efficiency and lumens per watt ratio. With a minimum output of 80 lumens per watt, COB chips can emit more lumens with less power. They can be found in various applications, such as point-and-shoot cameras or phone flashes.

SMD LED chips require a smaller current capacity, whereas COB LED chips need a large current capacity external energy source.

Why Choose the COB LED?

COB LED lights are higher-quality light emitters due to their use of reflectors to create concentrated and regulated light. They also lack the frosted lens that comes standard with SMD LED lights.

COB LEDs are a higher-end LED with a more structured appearance. If you intend to use your LED bulbs for a long time, a COB is the way to go; if you are located in an investment property, SMD will suffice.

Expect brighter, clearer lighting. COB LED lights are especially useful in high-ceiling areas.

The Advantages and Disadvantages of COB LED

Advantages of COB LED

1. Because of the multi-diode incorporation, there is a lot of light.
2. It produces more lumens while using less energy.
3. Due to the limited light emission zone, the device is small in size. As a result, the lumen per square centimeter/inch has increased significantly.
4. A single circuitry with only two connections is used to activate the many diode chips in COB LEDs. This results in fewer parts per LED chip necessary for proper performance. Furthermore, by reducing the number of components and eliminating the standard LED chip architecture packaging, the heat generated by each LED chip decreases.
5. Due to the ease of installation in an external heat sink, the overall temperature of the assembly is lower. Maintaining a steady temperature increases longevity and reliability, resulting in cost savings.
6. Clarity is improved, and efficiency is boosted.
7. Since it covers a large area with one chip, it has a substantial focusing area.
8. Excellent anti-vibration properties.

Disadvantages of COB LED

1. An external power source is required. This is because it needs steady current and voltage to avoid damaging the diodes.
2. A well-designed heat sink is crucial. If the heating element is not properly placed, the diode will be destroyed due to overheating. The highly focused light waves from a small area generate a considerable amount of heat.
3. Lighting fixtures with COB chips have lower repairability. If one of the solitary diodes in a COB is damaged mechanically, the whole COB LED must be replaced. In contrast, with SMD LEDs, one can easily replace a failed diode at a lower cost.
4. Limited color selection.
5. More expensive than SMD chips.

Multiple Uses of COB LED

COB LEDs have a wide range of applications, extending from residential to industrial utility, including:

1. COB LEDs are primarily used as solid-state lighting (SSL) substitutes for metal-halide bulbs in street lighting, high-bay lighting, downlights, and high-output track lights.
2. They are useful in LED lighting fixtures for living rooms and large halls due to their wide-angle beam.
3. High lumens at night are required in places such as playgrounds, gardens, or large stadiums.
4. Additional applications include basic lighting for passageways and corridors, fluorescent lighting replacement, LED lamps, light strips, smartphone camera flash, and more.

Conclusion

COB LEDs are increasingly popular in lighting applications as designers discover their advantages over traditional LEDs. They should be considered for any LED light application due to:

1. Their ability to cram more LED sources into a smaller area, resulting in higher lumen output
2. Their efficient heat transfer to a heat sink
3. Their wider field of view
4. Their lower light loss
5. Their lower failure rates due to simpler construction

COB LEDs are the most recent and advanced technology available. They are brighter, use less electricity, and provide a higher-quality beam of light than previous LED technologies used in most trade show lighting.

Simon Lan

LED screens will play a vital role in the digital era, with vast potential in various industries. We'll innovate and optimize our LED screen solutions, expand application areas, invest in R&D, and provide clients with better visual solutions, dedicating ourselves to driving healthy industry development and creating business value. We believe in the bright and promising future of the LED screen industry through cooperation and joint efforts.

Contact us to discuss your requirements for 300 watt cob led. Our experienced sales team can help you identify the options that best suit your needs.