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Nowadays, LED lighting is more preferred than fluorescent and incandescent lights. It is almost used in every industry, even at our homes. Due to its popularity, the PCB is commonly known as LED PCB or PCB Board for LED. It is known by many names, including LED circuit board, LED aluminum PCB, LED PCB board, etc. But all of them refer to one thing. Due to the rise in LED lighting, LED PCBs are widely fabricated and used almost everywhere.
What is an LED PCB Circuit Board?
LED stands for Light Emitting Diode. It’s a semiconductor that emits light when current flows through it. It provides light, which is the reason it is famous and widely used.
Now, LEDs have replaced the old and traditional lighting methods that consume more electricity and are expensive. LED is a better way because it’s more reliable, long-lasting, and efficient. But when we need more lightning to illuminate a particular area, a combination of LEDs is used. In simple words, an LED is not enough to illuminate a large extent, so multiple LEDs are used according to the requirement. Most of the time, the SMD LEDs are used because they are compact and can provide excellent brightness or lumens. There is a special SMD LED PCB board, which is widely used. These LEDs are placed on a PCB; hence, the board is named as LED PCB.
LEDs have a long life, so that they can last for a long time. For instance, an SMD LED can last up to 100,000 hours on average, and even more. Therefore, they are preferred over other methods.
Why LED PCB?
FR-4 is less expensive than metal-core PCBs, but still, it is not preferred. The reason is that LEDs give off too much heat, so it’s necessary to have an excellent heat dissipation capability. FR-4 does not have that capability. Moreover, even if you want to use high heat-dissipating components in FR-4, you need to use heat sinks that take more space on the board. In contrast, aluminum can dissipate heat efficiently, and there is no need to use heat sinks because the base material is more than enough. The dielectric layer transfers the heat to the aluminum layer, and the PCB can efficiently dissipate a high volume of heat without any hassle. This is the reason components can work for a more extended period. Moreover, aluminum can withstand high temperatures; it does not bend or deteriorate. An LED PCB is more durable and long-lasting; therefore, it is preferred.
Advantages of Aluminum LED PCB
Aluminum is commonly used for an LED circuit board because of its advantages.
- Less Cost
The cost of Aluminum LED PCB is much lower than other metal-core PCBs. It’s a cost-effective solution for high-volume heat dissipation. Furthermore, there is no need to use heat sinks.
- Dimension Stability
Aluminum shows incredible dimension stability. It does not bend or expand too much in high temperatures. The components on the board remain intact.
- Excellent Heat Dissipation
Aluminum LED PCB is used because of excellent heat dissipation. LEDs give off more heat as compared to other electronic components; therefore, they need excellent heat dissipation. It increases the life of the components and saves them from any damage.
Metal-core PCBs are durable. They do not bend due to high temperatures, and they can bear wear and tear. They are rugged, which is the reason they are used in automobiles and streetlights.
Aluminum is lighter as compared to other metals. Due to its lightweight, the weight of the final product is less.
What is an SMD LED PCB Board?
SMD stands for Surface Mount Device. The surface mount technology (SMT) has almost replaced the through-hole technology. However, through-hole technology is still used for the components that cannot be surface mounted. Therefore, Surface Mount LED PCB is very popular
SMDs are compact components that can be directly placed over the PCB. There is no need for a hole because the components do not have leads or might have small leads. There are only small contacts at the ends of the device that are used to make connections. Consequently, the PCBA is very compact. SMDs are soldered using reflow soldering. At first, the solder paste is applied on the bare board. Then, the components are picked and placed in the desired place. Finally, the board is passed through a reflow oven, and the components are directly mounted without any hassle.
An SMD LED PCB board contains SMD LEDs that are more compact than their through-hole equivalents. SMD LEDs are widely used nowadays. They provide higher lumen output, which improves the level of illuminance in the area. They are more efficient and brighter. This is the reason SMD LED PCB boards are preferred.
The Relationship Between LED and Printed Circuit Board
Technical Innovation of Printed Circuit Board
The Printed Circuit Board is a genius innovation of circuit technology, laying less space and materials for more complex and large-scale circuits. The printed circuit board is such an important invention in circuit technology because it makes electrical and electronic components smaller, more flexible, and more precise. For example, FPC( Flexible PCB ), Multilayer PCB, BGA PCB, rigid- Flex PCB, and so on.
Wide Application of LED Lighting
LED is an abbreviation for light-emitting diode. An LED is mostly a two-lead semiconductor device that emits light when current passes in a specific direction. Although LEDs start with devices that only emit low-intensity infrared light, this technology has been widely used in lighting for many years. Modern LEDs provide not only high intensity, very bright light but also different uses and use in various scenes, such as plant growth lights, car lights, street lights, traffic lights, shadowless lights in hospital operating rooms.
LED Printed Circuit Board
Soldering the LED chip to the PCB Board, as long as the PCB circuit is connected in some way, it will illuminate, which forms the LED PCB. LED PCBs typically also have a heat sink and ceramic pedestal to hold the circuit in place and allow the smooth operation of the channel. A heat sink is required because LEDs tend to generate a lot of heat, which can damage the PCB and the equipment that connects the circuits.
Because LED will produce a lot of heat, led PCB generally uses metal substrate as its production material. Metals with the ability to dissipate heat quickly have proved to be a better choice. Generally, whenever led PCB is designed, Aluminum PCB is preferred. Aluminum PCB usually also contains a thin layer of dielectric, which can dissipate heat faster.
In addition to general lighting, led PCB can also provide visible light, infrared, and ultraviolet light. Compared with other light sources, LED PCB can provide higher energy.
LED Circuit Board Materials
An LED PCB is a metal core PCB, which uses metal as the base material, such as Aluminum, Iron, or Copper. In most cases, LED PCBs are Aluminum PCBs. Aluminum is mostly used for the fabrication of LED PCB because it is cheap and lightweight as compared to other metals. Thus, we can say, an LED PCB is similar to an Aluminum PCB.
Aluminum LED PCB comprises three layers. These layers are the copper layer, dielectric layer, and aluminum base layer. The topmost layer is the copper layer, which makes the electrical connections in the PCB. This layer is standard in all types of PCBs. For the protection of this layer, a surface finish is used. Copper provides excellent conductivity and completes the circuit.
The next layer is the dielectric layer, which is very important in metal core PCBs. This dielectric layer serves as an insulator, and it prevents the flow of current in the base aluminum layer. The layer has excellent thermal conductivity, which is good for heat dissipation.
The last layer of the PCB is the base layer, which is made of Aluminum. This layer makes the board unique and provides it a separate identity. Due to the base layer, the PCB is more durable than FR-4. It can withstand wear and tear and high temperatures. Moreover, it is excellent for heat dissipation. It’s lighter than copper and iron.
LED PCB Board Manufactureing
Both LED aluminum PCB and FR-4 fiberglass circuit boards belong to PCB. To say differently, only compare LED aluminum substrate with FR-4 fiberglass circuit board.
The LED aluminum substrate is printed on the surface of aluminum material with better thermal conductivity, and then weld electronic components on it.
In electronics, an LED circuit or LED driver is an electrical circuit used to power a light-emitting diode (LED). The circuit must provide sufficient current to light the LED at the required brightness, but must limit the current to prevent damaging the LED.
The voltage drop across an LED is approximately constant over a wide range of operating current; therefore, a small increase in applied voltage dramatically increases the flow.
Simple circuits are used for low-power indicator LEDs. More complex, current source circuits are required when driving high-power LEDs for illumination to achieve correct, current regulation.
An LED PCB board tends to generate a high volume of heat, making it difficult to cool via traditional means.
Applications of LED PCB and Their Reasons
LED PCB has many applications in almost every industry. These are used in industries for lighting. They are used automobiles, airport runway lights, solar lighting, traffic lights, streetlights, flashlights, residential lights, etc. They are used almost everywhere. There are various reasons for its wide application. The most important reason is energy efficiency. LEDs in the PCBs can show excellent efficiency. They reduce the cost of operation. They consume less electricity as compared to fluorescent bulbs and incandescent bulbs. Moreover, the LED PCB board can be designed according to the requirements. Any design of the PCB can be achieved. Therefore, they can easily fit into various devices and lighting equipment.
The lumen output of LEDs is incredible. Even a small SMD LED can provide a higher lumen output as compared to other lighting products. Therefore, a few LEDs take less space on the PCB, and they can provide an excellent lumen output. The LED PCB can be designed according to the requirement of luminous flux in the area.
The LEDs are easily available in multiple colors. Their RGB characteristic can provide any color as required. Thus, LED PCBs are versatile, and they can be used for different purposes.
LED PCB Circuit Board Manufacturer
JHYPCB is a well-known PCB and PCBA service provider in China. We have a large facility for handling low-medium PCBs. We can make custom LED PCBs of any design. You can get high-quality SMD LED PCB board and PCBA at a very reasonable price. With our advanced technology and equipment, we ensure the highest quality. We have an ISO 9001 and RoHS compliant quality management system to offer the best quality to our customers. We can provide full turnkey LED PCB assembly and PCBs in very little time. You will get the solution to all your PCB problems under a roof at JHYPCB. For more information, feel free to contact us.
An LED strip light (also known as an LED tape or ribbon light) is a flexible circuit board populated by surface mounted light-emitting diodes (SMD LEDs) and other components that usually comes with an adhesive backing.
Aluminum PCB, also referred as metal base PCB, is a type of PCB which consists of copper clad laminate and thin dielectric thermally conductive and electrically insulated layer that is laminated between copper foil and metal base.
SMD LED. SMD stands for Surface Mounted Devices, a special type of high power LED lights. With no wires, these devices provide less fuss and with seamless application. Instead, SMDs have tiny metallic contacts that can be directly soldered to circuit boards.
A Metal Core Printed Circuit Board (MCPCB) is a type of printed circuit board that contains a base metal material. The core is designed to redirect heat away from components which produce a substantial amount of heat.
Relatively new to the LED market, chip on board (COB) LEDs offer many advantages over the standard options. COB LEDs are basically multiple LED chips (typically nine or more) bonded directly to a substrate by the manufacturer to form a single module.