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A light-emitting diode is a semiconductor light source that emits light when an electric current flows through it. It is commonly known as LED and plays an important role in our daily life. LEDs do many different jobs in a variety of devices such as LED light, LED display, LED traffic light, etc. Hope that we can give you an understanding of the classification (type), advantages, and applications of LEDs through this article.
According to the difference of LED chip packages, the various types of LEDs include COB, SMD, MCOB, and MCCOB.
SMD is short for Surface mounted diode which is a standalone chip on a ceramic base. It can be used for white LED lamps and LED strip lights. Now it’s very common in light industrial applications such as street light, floodlight, and linear light.
COB is short for chip on board. This kind of LED comes as a high-powered chip that is wired on a printed circuit board with optimal thermal management. It’s normally used in LED downlight, LED tracking lights.
Except for SMD and COB, MCOB and MCCOB are becoming common in LED lighting application now.
MCOB is short for multiple chips onboard LED. They are multiple COB LEDs integrated to form a single chip. This technology is used in LED bulbs and tubes. MCCOB is short for multiple chips and cups on board. They are normally used for high bay fixtures and some floodlights.
As we introduced before, we can divide the LEDs mainly into SMD, COB, MCOB, and MCCOB based on the different structures of LEDs. However, LEDs can be divided into three different categories according to their power. It includes Low-Power, Mid-Power, and High-Power.
Power is found mathematically by forwarding voltage and drive current. For example, Lumileds 3030 LEDs with 5.8V consumes approximately 0.7W when driven with a current of 120 mA.
As Lumileds said, they classified with the standard as follows. LEDs with power below 0.1W in the Low-Power class. LEDs with a power range of 0.1W to 1.0W are known as Mid-Power, while those with a power range of 1W to 3W are known as High-Power LEDs.
But different supplier has a different standard. Osram told us, LEDs with power below 0.2W are called Low-Power. LEDs with power between 0.2W and 1.0W are called Mid-Power. And LEDs with power between 1.0W and 4.0W are called High-Power. For 4W LED chips of Cree, they still called it Mid-Power.
Based on different standards, the Type of LEDs can be SMD, COB, or others. Here mainly introduces the advantages and disadvantages of SMD and COB.
SMD refers to the term “Surface Mounted Device” LEDs, which are the utmost shared LEDs in the market. There are multiple sizes of SMD LED chips: 2835, 3535, 3030, 3014, 5050, 5630; they are termed according to their dimensions: length and width. For instance, the size of the 3535 is 3.5 x 3.5mm, 3030 is 3.0 x 3.0mm, 5050 is 5.0 x 5.0mm. Below are the advantages and disadvantages.
The manufacturing procedure to make SMD is more expensive because the SMD diodes (LED chips) are machine printed on a PCB board.
COB is the short form of “Chip on Board”. Manifold LED chips are packed together as a single lighting module and it looks like a panel when it lights up. Different from SMD, COB has more diodes. COB has a printed circuit board on its substrate and diode chips are arranged in parallel or/and in series, based on the circuit of the PCB. The substrate can be either in aluminum or ceramic. Below are the advantages and disadvantages.
SMD LEDs are one of the most common types of lighting that we have today. They are used in many outdoor applications like street lights, floodlights, high bay lights, canopy lights, linear lights.
COB LED lights are used in numerous applications, including COB street lighting, tracking light, downlight, spotlight, and low bay light.
So, their application scenarios are not fixed. For example, Both COB and SMD can be used in street lighting and high bay light. While COB is much common in downlight and tracking light, and SMD are much common high bay light, street lighting.
Below we listed the differences between SMD and COB. But it will certainly be as below. For example, some COB LEDs are with high efficient than SMD LEDs. Or SMD will be a cheaper solution which is used in street light applications. Or even a downlight with COB can get a better performance in heat dissipation.
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SMD LED lightsCOB LED lightsNumber of diodesNormally up to 3 or 4 diodesMultiple diodes, 9 or moreAppearanceSmall, looks like a whole unitBig, diodes sometimes are visibleQuality of lightWide beam angle with some glare.Relatively high CRI and uniformity lightingLumens per watt ratioNormally higher than COBRelatively lower efficiencySize of the heat sinkSmall heat sinkNeed a big heat sinkTechnologyThey require mounting then reflow soldering on the PCBIt does not require any mounting or reflow solderingManufacturing costsRelatively highRelatively lowLight Emitting Diodes, sometimes known as LEDs, are the true unsung heroes of the modern world. They perform several separate functions and are present in a wide variety of devices. In addition to everything else, they display numbers on digital clocks, convey information from remote controllers, illuminate watches, and indicate whether your gadgets are powered on. Grouped together, they may produce images on a giant flat-screen television or illuminate a whole room while replacing traditional filament bulbs.
LEDs are essentially little lights that fit easily into an electrical circuit. However, unlike traditional incandescent bulbs, they do not have a filament and do not become especially hot. They are illuminated only by the flow of electrons in a semiconductor material, and their lifespan is comparable to that of a conventional transistor. The lifetime of an LED is thousands of hours longer than that of an incandescent bulb.
The next generation of lighting, LEDs save energy, minimize maintenance and replacement costs, and contribute to environmental protection. Additionally, they endure significantly longer than conventional lights.
LED lights can match the brightness and hue of your current lighting. As with any other product, however, there are both low-quality and high-quality LED lights. You may have previously encountered inferior items that do not match your current lights. Encore LED can assist you in selecting the optimal replacement fixture for your present lighting in terms of brightness and color temperature.
Fundamentally, there are three different types of LED technology that are used in LED lighting – DIP, SMD and COB.
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We will include thermal grease to cover the quantity of LED modules ordered.
Dimensions 22.59 x 22.59 x 3.4mm (0.89 x 0.89 x 0.1in) Light Source DiameterØ18.75mm (0.74in)
The 10W Constant Current COB LED Chip in Cool White (6000K) is a high-quality lighting solution that provides bright and efficient illumination. With a voltage of 30V, wattage of 10W, and current of 350mA, this LED chip light is designed to consume low power and operate with high energy efficiency.
The LED chip light has a color temperature of 6000K (Cool White) and a light source diameter of Ø18.75mm (0.74in). It measures 22.59 x 22.59 x 3.4mm (0.89 x 0.89 x 0.1in) in dimensions, making it a compact and easy-to-install lighting option.
To ensure optimal performance and longevity. It is recommended to use Thermal Grease HY510 during installation, which is included in the package content along with the LED module.
This LED chip light is a good DIY product for replacing damaged LEDs of any fixture with the same voltage and wattage. Overall, the 10W LED COB Chip Light in Cool White is a cost-effective and eco-friendly lighting solution suitable for a range of indoor and outdoor applications.
Useor Thermal Pad for installation.
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