An FPCB (flexible printed circuit board) is a unique type of electrical circuit. As its name suggests, it is flexible. You can bend and shape them into your desired form.
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FPCBs are composed of a thin film or foil made of polyester acting as the substrate material. They are lightweight and heat-resistant, ideal for providing the interconnections in a circuit.
FPCBs have many applications, from automobiles and aviation to consumer electronics and LEDs. Due to their flexibility, their application continues to increase.
LED strips are essentially interconnected circuit boards. SMD LEDs and other components mount onto the flexible circuit boards using Surface Mount Technology (SMT). In other words, FPCBs act as the substrate where manufacturers mount the LED chips.
Apart from acting as its structure, another main function of circuit boards is Heat dissipation.
3.1 Single Layer PCB
Single-layer boards consist of a substrate layer and a conductive layer. A solder mask and silkscreen protect these layers. It doesn’t have circuits on its backside.
They have a thin structure, being only around 1-oz in thickness. You’ll feel remarkably lightweight when holding them.
3.2 Double Layer PCB
Compared to a single-layer PCB, the double-layer PCB has two copper layers that makes it thicker and heavier, as it has a conductive layer on both sides.
They’re also more durable as the circuit board can withstand higher currents, and the heat dissipation is better.
In current lighting market, we can find that both single-layer PCB and double-layer PCB have been used for LED strip lights strips. Once you tear off the adhesive tape on the back of the LED strip, you can clearly see the difference between these two kinds of PCBs.
Some manufacturers of led strip light choose single-layer PCB to save the cost. Although the double-layer PCB is more expensive, the LED tapes made by it have higher lumens and better heat dissipation to significantly improve its stability and longer life. It is a necessary choice for the LED strips used in your “done-then-forget” lighting project.
Circuit board thickness is measured in copper ounces (oz.). It is the amount of copper (in ounces) needed to attain a thickness of over one sq.
When it comes to electronic circuits, the copper choice is critical. Though a standard regulates the copper quality applied to electronic circuits, they still vary in thickness.
The copper thickness should be considered when shopping for an LED strip. If you intend to get high-powered ones, you’re going to need thicker copper 2-oz or 3-oz.
LED strips with higher copper thickness has the following advantages:
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The LED PCB comes into being with the rapid development of the printed circuit PCB industry. Some LEDs were soldered on PCB to created lighting electronic products.
As we all know that LED will generate more heat compared with other electronic parts, which required the PCB to have a better ability for dissipating heat. For these special requirements, metal core PCB are frequently used on LED PCB, especially aluminum core PCB. This is because the aluminum PCB typically includes a thin layer of thermally conductive dielectric material that can transfer and dissipate the heat with much greater efficiency than a traditional rigid PCB.
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 as “LED PCB”.
When it comes to the advantages of using LED PCB, well there are plenty of them and we are now going to mention a few so that you know about the application too.
．Light In Weight
．No Dimension Issues
．Efficient Low Power Consumption
．Available In Different Sizes
．Heat Dissipation Performance
．Dust and Moisture resistant
．May be used in silver flex membrane switches and copper flex membrane switches.
LED indicators and displays are always used for telecommunications equipment because of the surrounding machinery, the excellent heat transferability. So aluminum-based LED PCBs are extremely useful in this application.
Aluminum PCB LEDs also used in cars on indicators, in headlights and brake lights, and other applications. The durability and competitive price makes these aluminum PCBs ideal within the automotive industry.
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Consumer electronics are those devices that are being used by humans on a daily basis. These electronics include smartphones and computers, in fact, even the new forms of fridges also have electronic components in them. The best part about the LED PCBs is that they offer low units per cost which make the price of the final product relatively less than what it’s supposed to be.
Lighting tools used in surgeries and medical examinations commonly use high-powered LED lights, and these LED lights often use aluminum PCBs.
This is primarily due to the durability and heat transfer capabilities of aluminum PCB LEDs — this ensures medical equipment is functioning properly regardless of the number of patients cycling through a medical office. In addition to lighting tools, medical scanning technology often uses aluminum PCBs as well.
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