How Led Printed Circuit Boards Are Made?

How Led Printed Circuit Boards Are Made

PCB technology has driven many innovative developments, including innovations in LED printed circuit boards. Though there are several types of led lights of different shapes in the electronic market, they all have led PCB at their core. This article will explore what an LED PCB is and how it is made.

What is the LED printed circuit boards?

Light-emitting diode, abbreviated as LED, is an increasingly common lighting technique in the digital age. An LED PCB is a printed circuit board specially made for LED circuits since they produce a great amount of heat energy. LED PCBs are metal-based MCPCBS, and their substrate is aluminum, which has good thermal conductivity.

LED PCBs are made of a special thin layer of thermally conductive material that dissipates heat quickly as compared to the usual PCB boards. Aluminum is the main material used in LED circuit boards.

Now SMD packaging type is the most widely used packaging form in LED applications. In general, it’s limited for the light emitted from a single LED component. So multiple LED components would be used for a single light fixture to achieve sufficient light. Like other semiconductor devices, PCB is the best method to electrically connect the LED components. And a PCB with LED components soldered is usually called an “LED PCB”.

LED PCB Materials

You should carefully consider material thermal performance when choosing a LED PCB substrate. Weight, size, and cost are also important. The substrate material options include:

FR4 PCB Raw Material
CEM-1 PCB Raw Material
CEM-3 PCB Raw Material
The copper and Aluminum PCB Material
Copper Core PCB Material
Ceramic Base PCB Material

Each material has good and bad points. For example, metal and ceramic have better thermal performance than laminate. CEM-1 boards are low-cost but are fragile compared to FR4 and CEM-3 substrates.

Ceramic base PCBs use materials such as Alumina. There are other materials with better thermal performance, but they cost more. A similar trade-off applies for metal core PCB materials, including Aluminum and Copper.

How LED printed circuit boards are made

Here are the steps to follow on how to solder LEDs to a circuit board below:

1. Tinning the tip: For you to solder, you have to use a tinned tip. In order for you to properly tin the tip of an iron, you have to apply solder to the tip and then make sure that you coat it thick. Afterward, you should wipe the extra solder with a wet material and then reapply a small quantity of solder to the tip once again.

2. Ensure that the solder surface is clean: The surface has to be clean for it to have quality results. Thus, ensure that you take away any dust, dirt, or an element that’s on the surface. Learn more details about how to clean the PCB here.

3. Tin the surfaces: Before the final connection is done, the wires should be tinned. Apply a thin layer of solder to the wires. Ensure that the solder sticks to the wire. Next, ensure that the solder pad is tinned too. Apply solder to the pad. The solder has to flow evenly on the entire pad. Afterward, take the iron away and allow the solder to firm up.

4. The Final connection: Use a tinned tip and surface to hold the two pieces being soldered with the iron. The solder on each surface has to flow. Remove the iron quickly and after the solder hardens, both components should be soldered.

It’s imperative to take note that soldering can be difficult, especially if you’ve never done it before. It is possible for you to damage a component. The important thing to remember is that irons are hot and LEDs don’t like exposure to a lot of heat. So, you have to be extremely cautious with the temperature setting on your iron and the amount of time you use to apply the iron on the surface. It should take a few seconds for solder to flow and attach itself on a surface.

The Advantages of LED PCB

Led Printed Circuit Boards

There are notable advantages that LED PCB offers. They include:

Quality performance: Manufacturers and designers prefer making use of LED PCBs because of their capacity to produce high performance. Customers opt for products that have quality performance because their needs will be met accordingly. Therefore, LED PCBs remain popular because they’re able to offer exactly that.

The flexibility of designs: For those who prefer products that offer design flexibility, LED PCBs are a better option. It’s possible for customers to have their appliances designed according to their designs of choice. Moreover, you’re able to gain access to different designs of LED PCBs in the market.

Energy efficiency: In a day and age where energy consumption can be costly, it’s valuable to use appliances that save energy as much as possible. The use of LED circuit boards goes a long way to help users save a high amount of energy.

Cost-effectiveness: Cost-effectiveness is a pivotal characteristic of LED circuit boards. Any appliance that saves costs for both manufacturers and customers is a great option. If you would want to save money on electrical applications, consider using LED circuit boards.

Ease of use: You don’t need training for you to use the appliance. It is easy to use, thus it’s a preferred choice for many users. In addition, in case of any problem developing with a LED circuit board, it is easy to diagnose it and also make repairs to it without necessary contacting a technician to fix it.

Less noise: Most electrica appliances produce noises that can be annoying but LED circuit boards are different. Despite producing effective lighting, they don’t make a lot of noise as other applications do.

It is compact: The quality of being compact gives a LED PCB a great advantage. It is because of this factor that manufacturers are able to position it well into various areas like cars and others.

Stable Placement: The LED circuit board components resist movements since they stick well to the board. It is because of this characteristic that manufacturers are able to use it effectively in appliances that move like the headlights of a car. Drivers don’t have to worry about components being displaced and the development of electrical short circuits as the car makes movements.

Availability is different sizes, intensities, and colors: This advantage gives users the freedom to choose what suits their needs the best.

Lightweight: For the users who like using appliances that are lightweight, LED PCBs are a viable option for them.


The application of LED PCB

PCB LED lights have excellent energy efficiency, low cost, and maximum design flexibility, so they can be incorporated into numerous lighting applications.

Telecommunications: LED indicators and displays are always used in telecommunications equipment due to the surrounding machinery, and they have a great heat transfer ability. Therefore, aluminum-based LED PCBs makes a useful effect on their application.

Automotive: aluminum PCB LEDs also are used for cars on indicators, brake lights and in headlights, as well as other applications. There are some factors making the aluminum PCBs be ideal within the automotive industry, such as the durability and competitive prices.

Computer: LED displays and indicators are more and more popular in computer applications. And aluminum PCB LEDs are an ideal solution because of the heat sensitivity of computer machinery. Expect for LED applications, aluminum PCBs are also used for the computer parts like power devices and CPU boards due to their ability to dissipate and transfer heat.

Medical: Lighting tools used in surgeries and medical examinations commonly use high-powered LED lights, and these LED lights often use aluminum PCBs, which is primarily because of the durability and heat transfer capabilities of aluminum PCB LEDs — this makes sure medical equipment is functioning properly regardless of the number of patients cycling through a medical office. Expect for lighting tools, medical scanning technology often uses aluminum PCBs as well.


LED PCBs are used in many different applications and are almost used in every other circuit. The wide scopes of electrical applications that use LED PCBs are a testament of how popular they are in the electric world. If you are a lighting system OEM and require good-quality PCBs for your application, ensure you source them from a reliable PCB manufacturer and assembler who offers end-to-end services.


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