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Overview&#;

1&#;What is COB Led?

2&#;What are the advantages of COB light source?

3&#;Where are the main applications of COB?

4&#;Why choose the COB?

5&#;How to choose LED COB lights?

6&#;Difference between COB LED and SMD LED

W

hat is COB Led?

COB lamp is a kind of LED lamp. COB is the abbreviation of Chip on Board in English, which means the packaging technology of chip on board. It is a high-efficiency integrated surface light source technology in which multiple LED chips/bare chips are directly attached to a high-reflectivity mirror metal substrate (such as silicon carbide). This creates a large LED chip with compactness, energy-saving, and excellent uniform brightness, which is loved by related professionals such as filmmakers and photographers. Generally, COB chips have 9 or more diodes. However, no matter how many diodes there are, COB LED lights have a single circuit with several contacts. Because it has the characteristics of easier dimming and color adjustment, high brightness, anti-glare, and can well solve the problems of chromatic aberration and heat dissipation, COB light sources have now been widely used in commercial lighting and other fields.

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hat are the advantages of COB light source?

1&#;Cost saving

 

In terms of cost, compared with previous discrete light sources, COB light source modules can save the cost of device packaging in actual lighting applications, as well as the cost of light engine module production and the cost of secondary light distribution. In a lighting system with the same function, the overall cost can be saved by about 15%.

 

2&#;Strong performance

 

In terms of performance, the COB light source module can also effectively solve the glare problem caused by the combination of discrete light source devices through reasonable design and technology. You can also add a red chip combination to ensure that the efficiency of the light source is not reduced, and the life of the used equipment is guaranteed, while also improving the color rendering of the light source. The COB light source is integrated by multiple diodes, with a large focus area, a single chip can cover a large area, and the light concentration is high. The use of transparent lenses reduces light loss, improves clarity, and helps improve light efficiency.

 

3&#;Convenient application and mass production

 

In the actual application process, COB light source modules can also make the installation and production of lighting manufacturers easier and more convenient. With the current level of technology and advanced equipment, large-scale COB light source module production can be carried out.

 

4&#;Energy saving and environmental protection

 

Compared with other LEDs, the light-emitting area of the COB light source consumes less energy when emitting the same lumen brightness. The light-emitting area of the COB light source is greatly reduced, and the heat generated is greatly reduced. At a certain temperature, the life span and reliability will be improved, energy consumption will be saved, and the problem of light source failure due to heat dissipation will be avoided.

 

5&#;Secondary light distribution can be formed

 

The light-emitting angle and effect of the COB light source are better used through the refraction of the lens and the illumination of the spotlight&#;so that the light-emitting angle can be adjusted arbitrarily to form a secondary light distribution.

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here are the main applications of COB?

LED COB is suitable for various outdoor and indoor lighting applications. It can be applied to general lighting in the industry, housing, construction and other fields. Its uniform brightness makes it play a vital role in film production and photography.

1&#;Indoors&#;spotlights, downlights, ceiling lights, fluorescent lights, and light strips.

2&#;Outdoors&#;street lights, high bay lights, floodlights, current city night scene wall washer lights, luminous characters, etc.

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hy choose the COB?

1. High light efficiency

The high intensity and uniform luminosity of the on board chip can provide users with a good experience. COB LED lights are high-quality light emitters because they use reflectors to produce concentrated and regulated light. It satisfies high-standard lighting applications for brighter and clearer lighting.

 

2. Flexibility

The compactness of the COB LED array makes it easy to use in different places. Traditional DIP lamps are cheap but too bulky. Compared with DIP lamps, COB LEDs are more portable and flexible in outdoor applications and are very convenient.

 

3. Easy to install

Compared with the SMD lamp, the entire chip of the led cob panel only needs one circuit and two contacts, while the SMD lamp needs one circuit for each diode contained in the chip, so it is easier and more convenient to install.

H

ow to choose LED COB lights?

To choose a COB LED panel, the following are some of the factors you need to pay attention to.

 

1&#;Light output: The light output is determined by the lumens of the light. The higher the lumens, the brighter the light can be seen.

2&#;Lighting method: There are various COB LED lights on the market now. Some of them can change the lighting mode according to the different requirements of the scene.

3&#;Power supply: Before buying a lamp, it is necessary to determine its power requirements. If the lamp is portable, a stable power source is required.

4&#;Internal heat sink: Since the cob-led chip generates a lot of heat, a good heat sink is essential.

D

ifference between COB LED and SMD LED

Table form:

COB LED

SMD LED

Output lumen
(lm/watt)

At least 80 lm/w

50 to 100 lm/w

Mounting difficulty

Easy

Moderate to Hard

Efficiency

Higher

Lower

External Power Supply

External power supply with high current capability is must

Lower current capability is required

Cost

Expensive

Slightly lower than Cob led

Different inside the chip

two contacts and one circuitry, cannot be used to make color-changing lamps. To achieve a discolored appearance, multiple channel modifications are required.

red, green, and blue diode. By using these three diodes, any desired hue can be generated simply by changing the output level

Image form:

At present, lighting technology continues to develop. As designers realize the advantages of using COB LEDs over traditional standard LED options, COB LEDs are used more and more. In order to provide brighter light and use less energy, it has become a common application in lighting products. They can pack more LED light sources into a smaller space to increase lumen output, and can more effectively transfer heat to the radiator. Because of the simpler structure, the failure rate is lower, the light loss is lower, and the viewing angle is larger. It is difficult not to consider them in any lighting application design.

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Articles you may also be interested in&#;

All you need to know before buying COB led strip

LED strips have been a trendy DIY lighting solution for many applications for many years. That&#;s why we are so interested in the latest LED strip technology, flexible COB led strip lighting.

 

What is COB?

COB stands for Chip on Board in the LED field, which basically means that the LED chip is packaged directly on the circuit board (PCB). &#;Chip on Board&#; LEDs for flexible strip lights are sometimes referred to as flip-chips.

Flip chip LEDs are basically a bare-bones approach to LED construction. Take a look at an ordinary SMD (Surface Mount Device) LED. It has a Lamp bead holder that package the LED chip and then covers it with a phosphor coating. The &#;flip chip&#; that makes up the COB LED strip removes everything from its design, except for the LED chip, yellow phosphor cover layer, and connection pads.

 

 

What is COB LED strip light?

COB LED strip light or COB LED tape light, which is LED chips directly attached to the FPCB(Flexible Print Circuit Board), is a continuous and dotless led strip light. So, COB LED strip light is also called continuous led strip light or dotless led strip lights.

 

 

COB VS SMD led strip?

COB led strip beam angle is 180 degree, SMD led strip beam angle is 120 degree.

COB led strip is better flexibility than SMD led strip.

COB led strip is uniform light, dotless.

COB means chip on board, COB led strip don&#;t has gold wire, but SMD led strip has gold wire.

 

 

How is COB LED flexible strip manufactured?

Expanding Chips

Die bonding

Resistors onto FPCB

Reflow-High temperature over 65 degrees for finished PCB with chips and resistors

Fluorescent Powder glue mixing

Drop the mixing glue on the surface of chips and resistors by auto glue machine

Put glued cob led strip into the oven

QC-testing the cob led strip after cooling

Soldering the PCB into 5 meters per reel or the length as customer request

Aging test, QC test, packing, then shipping

 

 

Advantages and Disadvantages of COB LED Flex Strips

If you are looking for more details, kindly visit Buy 150W COB LED.

Now that you have a basic understanding of how this new COB led strip is produced, it&#;s time to see its advantages and disadvantages.

 

 

Advantages:

No LED lighting dot, even without aluminum profiles.

One of the biggest complaints about traditional LED strips is the lighting dot throughout the strip. A lighting dot is a bright area through the strip where you can see where the light is coming from. Light is more soft and attractive when it looks like a smooth light source rather than a lighting dot mess.

With SMD flex strips, the larger diodes are squeezed close enough so that the light is spread out and consistent across the illuminated surface at a distance. But if the light is too close to the surface or the strip itself is visible, the hot spot is an obstacle that the human eye cannot ignore.

With a 480 chip/M COB strip, it is pretty challenging to pick out any hot spots on the COB flex strip. This strip shines a soft, uniform light from end to end. Even light with no lighting dot is more attractive to the human eye and gives off a steady light even in the narrow places. The only natural way to see the lighting dot is to look at the back of the strip, where it is easier to see the individually placed flip-chip LEDs. You can only see the individual led if you dim strip down to about 5% brightness. This makes COB flex strips ideal for applications where

The led strip itself cannot be hidden from view.

The surface being illuminated is within 2 feet of the light bar.

Reflective surfaces like granite/glass are all around.

Those applications where you want an excellent neon effect.

More flexibility

These strips are much more flexible than other flexible strips because of the small size of the diodes and the uniform weight distribution. These diodes are so small and closely spaced that no point of the strip is the same. This uniformity makes it easy to set up the strips without planning around a SMD LED sticking out where you don&#;t need it. This extra flexibility will make it easier for them to fit into tight areas and turn corners in your application.

More stable, fewer problems

COB strip is the chip directly attached to the FPCB, does not come with gold wire. Traditional SMD LED strip, very many problems are caused by the gold wire inside the LED beads. Because the gold wire is too small, it is straightforward to be broken, leading to the chip not being illuminated.

The circuit design of the COB strip uses three chips, first in parallel, as a group, then each group, and then in series to form one step. Even if a group of two chips inside the bad, this one-step strip can continue to light. And COB a meter of chips how big 480, even if 1-2 chips do not light, will not produce dark areas, will not affect the use. While the traditional SMD strip, a CUT, as long as there are lousy lamp beads, this one cut will not light, so there will be obvious to see a section of the dark area.

COB LED strip circuit diagram SMD LED strip circuit diagram

Wide emitting angle

The traditional SMD light strip luminous angle is 120 degrees, while the COB light strip luminous angle is 180 degrees.

Anti-vulcanization

Because COB LED strips, chip on board, do not have the gold wires of traditional SMD LEDs, so they will not be vulcanized. In the chip inside the SMD LED lamp bead, one electrode is connected to the LED bracket with gold wire, and the other electrode is connected to the bracket through silver glue. But silver reacts very easily with sulfides to form silver sulfide. As a result, the blackening and luminous flux of the LED are reduced.

Stronger anti-static capability

COB LED strips have stronger antistatic ability than traditional SMD LED strips.

 

 

Disadvantage:

Difficult to maintain the consistency of color

Because there is no COB led strips binning machines on the market. At present, all COB led strips manufacturers are only sampling to ensure color consistency. So, COB led strips are difficult to ensure that 100% are within the 3-step color tolerance.

Lower luminous efficiency

COB led strip light efficiency, currently only about 120LM/W. If you need higher light efficiency, COB led strip is not suitable.

Lower power

The maximum power of COB led strip, only recommended doing 15W / m. Because the number of chips per meter is too much, if the power exceeds 15W / m, the chip&#;s heat is brutal to dissipate. COB led strip life will be shortened.

 

SMD encapsulation procedure &#; Binning

 

 

Characteristics of COB Flex Strips

If you&#;ve been listening, the advantages and disadvantages of COB flexible light strips should be obvious, so now let&#;s get into some specific details about this sort of strip. If you&#;re acquainted with LED strips, then lots of this may sound familiar, but there are some differences during this form of  strip, so it&#;s best to test out the guidelines below before using COB strips.

 

Cut and Connect

COB led strip can cut this strip just like our other strip lights. Please only cut along the cut marks marked on the strip every 50mm (24) / 25mm (12V). This allows you to cut the strip to a custom size or add gaps to your application. The cut strips can be used again and are best connected by soldering, but if this is often not an option, our COB strip connectors also are available as an option.

 

 

Dimmable

Flexible COB led strips are dimmable as well as regular SMD led strips.
You can use DALI, triac, PWM, 0-10V dimming power supply to use with COB led strips to achieve dimming.

 

 

Color Options

White light: K, K, K, K, and other custom color temperatures are available

Colorful light: Red, green, blue, yellow, pink, etc., are available.

Tunable white, RGB, RGBW are all available.

Mono cob led strip

CCT cob led strip

RGB cob led strip

RGBW cob led strip

addressable cob led strip

 

Voltage Options

5V(volt) cob led strip light

12V(volt) cob led strip light

24V(volt) cob led strip light

48V(volt) cob led strip light

 

 

Length Options

5m cob led strip

10m cob led strip

50m cob led strip

100m cob led strip

 

COB LED Strip Sample Book

 

 

 

COB LED Strip Video

 

Tunable White COB led strip

 

RGB COB led strip

 

RGBW COB led strip

 

Dim To Warm COB led strip

 

48V COB led strip

 

Solderless COB LED Strip Connector

 

COB led strip connector

 

L shape COB led strip connector

 

IP grades

We offer a variety of options for waterproof COB led strip.

IP20 none waterproof, IP52 silicone drop, IP65 silicone sleeve, IP67 silicone sleeve, and other various waterproof ways are available.

IP52 silicone drop IP65 silicone tube IP67 silicone filling

 

COB led strip light applications

Architectural

Furniture & wine cabinet

Holtel renovation

KTV & KTV bar

Parking

shopping mall

TV

 

How to install the COB led strip light? (step by step)

Clean the surface where you wish to put in the COB led strip light.

Cut the scale of the COB led strip light you would like to put in.

Tear the 3M backside of the COB led strip light.

Paste the COB strip light where you would like to put in.

Connect the ability supply with COB led strip light.

If you wish to attach the COB led strip light, you&#;ll be able to solder or use the cob led strip connector.

 

FAQs

 

Conclusion

If you need a light effect without light spots, you can try COB led strips. If you need strict color consistency, such as 3-step Macadam color tolerance or 2-step Macadam color tolerance, or if you need high lumens, high luminous efficacy, then you can only consider the traditional SMD led strip.

LEDYi Lighting is a professional cob led strip light manufacturers and factories. We offer customized solutions, OEM, ODM service. Wholesalers, distributors, dealers, traders, agents are welcome to purchase in bulk.

All of our LED strips and LED neon flex go through high-tech laboratories to ensure the utmost quality. Besides, we offer customizable options on our LED strips and neon flex. So, for premium LED strip and LED neon flex, contact LEDYi ASAP!

 

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What is COB led? What is an SMD led?

What is COB led? What is an SMD led?

 

 

Difference between LED Light: COB and SMD

 

 

LED lights are constantly improved to bring about better use, greater versatility and more efficient use of power. The different models of LED lights are highly popular compared to traditional incandescent lights, mainly because they can last for about 25 times longer with less energy use.

LED lights come in a variety of models. Start comparing COB vs SMD LED Lights, or before you look at the difference between LED light COB and SMD.

You can choose between SMD vs COB types, for example, depending on your needs for energy efficiency and versatility. The COB vs SMD LED Lights differ in terms of their features and semiconductors.

 

 

SMD vs COB: What is SMD?

 

SMD, or &#;Surface Mounted Device&#; LEDs, are the most common LEDs in the market. The LED chip is permanently fused to a printed circuit board, and it&#;s highly popular due to its versatility. You can find it in light bulbs and string lights, and even in the notification light on your mobile .

 

The SMD LED chips come in a variety of sizes. SMD LED can accommodate chips with complicated designs, like the SMD , which is 5mm wide. The SMD , on the other hand, are 3.5mm wide. The SMD chips are small, almost close to the design of the flat, square computer chip.

One of the distinct features of SMD LED chips is the number of contacts and diodes they have.

SMD LED chips can have more than just two contacts (which makes it different from the classic DIP LED). There can be up to 3 diodes on a single chip, with each diode having an individual circuit. Each circuit would have one cathode and one anode, leading to 2, 4 or 6 contacts in a chip.

This configuration is the reason why SMD chips are more versatile (comparing SMD vs COB). The chip can include a red, green, and blue diode. With these three diodes, you can already create virtually any colour simply by adjusting the output level.

SMD chips are also known to be bright. They can produce 50 to 100 lumens per watt.

 

 

SMD vs COB: What is COB?

 

One of the most recent developments in LED, COB or &#;Chip on Board&#; technology is a step forward more efficient energy use.Like the SMD, COP chips also have multiple diodes on the same surface. But the difference between LED light COB and SMD is that COB LEDs have more diodes.

 

COB chips typically have 9 or more diodes. COB chips also only have 1 circuit and 2 contacts, regardless of the number of the diodes. This simple circuit design is the reason for the panel-like appearance of COB LED light (SMD light, on the other hand, appears like a collection of smaller lights).

But unlike SMD, COB LED lights can&#;t be used to create colour changing bulbs or lights. This is because there are only 2 contacts and 1 circuit. Multiple channels for adjustment are required to create the colour changing effect. Because of this, COB LED lights are efficient in single-color applications, but not in more versatile technology.

Another aspect of the COB vs SMD LED Lights difference is in the use of energy. COB is known for better lumen-per-watt ratios and heat efficiency. This has a lot to do with the design of COB LEDs, and the cooling ceramic substrate of the chips.

Before, heavy duty technology like spot lights and flood lights made with LED were non-standard, because you&#;d need multiple LED sources to produce that kind of high lumen output.

But now, COB chips can produce a large amount of lumens with less energy. You can find it in all kinds of bulbs and applications, such as the flash of your mobile or point-and-shoot camera. Its range is higher with a minimum of 80 lumens per watt.

Cree vs COB LED Lights &#; What to Know

We all know that LEDs are capable of longer lives, use less energy, and don&#;t create as much heat as incandescent bulbs. However, there are subcategories of LEDs as well, like Cree or COB LEDs. These lights provide users with the benefits of common LEDs so what&#;s the difference when looking at Cree vs COB LED lights?

 

What are Cree LEDs

What is the difference between Cree vs COB LED lights? The differences are minimal but there is enough of a difference to choose between them. Cree LEDs are simply LED lights that utilize a Cree chip. The lighting community praises Cree for the chips they use for many reasons. However, the most common reasons include high performance output, lifespan, and stability. You can look at the chip to see if it is Cree or not. A Cree chip uses a square chip that is divided into rectangles. Cree chips can provide your LED with 370 lumens of light which is another reason why these chips are so popular. You will find Cree chips in a few various places like emergency lights, portable lighting, vehicle manufacturers, and both outdoor and indoor lighting. That means that Cree LEDs are LEDs that use Cree chips.

 

What are COB LEDs

COB LEDs are Chip on Board LEDs. These LEDs have multiple diodes each having its own chip that controls it. However, the diodes and chips are placed closely together on a single panel which produces a single light source. The best way to think about this is in terms of a Light Bright. Remember those toys we played with as kids? They had colored pegs that light up when you place them on the panel. You could place one colored peg on the board and get a small source of light. Plug in multiple pegs next to each other and you get a panel of light.

Chip vs Panel

To understand the difference between Cree vs COB LED lights we should cover the difference between the chip and the panel. The chip is what powers and controls the LED diode. Think of a diode as a tiny light bulb. A COB LED has many diodes on one panel that creates a seemingly single diode that is much larger in size. That large size allows COB LEDs to produce a light with wide coverage. The chip on the other hand is what controls the diodes telling it how bright to shine and is capable of changing colors as well (if the diode is capable of color changing). The question is, if COB LEDs have chips and Cree is a brand of chips, couldn&#;t you just have Cree COB LEDs? The short answer is yes.

 

Cree vs COB LED Lights

Yes, Cree makes COB LEDs using its chips to power the diodes. However, there is still a difference between Cree vs COB LED lights. Currently, Cree LEDs include green and blue LED chips that have elevated levels of luminousness. You will find Cree LEDs in backlighting, general lighting, electronic signals, and even signs. COB LEDs are larger in size since they are entire panels of diodes. The heat levels are also different. Cree LEDs produce a fair amount of heat for a single chip but can disperse that heat easily. COB LEDs produce a similar amount of heat but as a harder time dispersing that heat. That means Cree LEDs may have a longer lifespan than COB LEDs depending on how much use they get.