Your Expert LED PCB Manufacturer in China Since 2008

The most notable features of an LED PCB include-

• Low relative permittivity (3.5-5.5)
• The operatingperiod lasts for almost 50000-100000 hours.
• Free from UV emission
• Low dissipation factor (around 0.02)
• Lead-free compatible
• Low power consumption
• IK rating is 8
• High TG value (above 150⁰C)
• High lumen output per watt
• Halogen-free
• Light intensity is below 100 ns
• High decomposition temperature (>280⁰C)
• Low moisture absorption rate (almost 0.02%)
• The IP rating is IP56
• Eco-friendly
• Cool beam capability

LED PCB Operational Process

LED PCBs consist of the following materials-

Silkscreen

This section of LED circuit boards contains necessary information related to PCB design, component placement, etc. Usually, silkscreen enables the programmer to understand the circuit board perfectly.

Metal Core

Aluminium, copper, etc materials act as metal core in PCB. These elements ensure thermal conductivity and insulation of LED bulb PCB boards.

Substrate

FR4 is the substrate material of LED driver PCBs. This material provides a foundation layer on PCB that ensures sufficient robustness and stretchability.

LED

Light Emitting Diodes are the must-have materials of LED-mount PCBs. These diodes produce lights when the required current flows through them.

LED Bulb PCB Materials

Numerous LED PCBs are available in the market that can complete your expectations. You can find versatility concerning their applications, operations, custom solutions, etc. Some of notable LED light PCB boards are-

LED Aluminium PCB

Aluminium LED driver PCB is reputable for its compact design. Besides, it can deliver excellent brightness while used in electronic applications. Usually, Aluminium materials are used in SMD LED PCB boards to ensure optimum functionality.

Rigid PCB

Rigid PCBs with LED technology have a high demand among gamers and professional technical persons. These circuit boards offer sufficient robustness along with outstanding lighting. Moreover, they consist of Fiberglass Epoxy that acts as fixatives in these PCBs.

LED Flexible PCB

Are you struggling with the functionality of your portable devices?

LED flexible PCBs are designed to improve the portability of electronic appliances, like laptops, smart devices, monitors,  connectors, etc. Especially, flexible LED PCB strips have extensive use in portable electronics nowadays.

High Power PCB

LED circuit boards with high power compatibility bring out a revolutionary improvement in the IC world. These PCBs handle high current loads, short circuits with excellent efficiency.

Besides, their longevity is highly impressive for the electronic devices that run through consuming significant power.

Customised LED PCB

LED driver PCB, LED light PCB board, etc support customization. These circuit boards are flexible enough to meet the demands of modern technology in terms of design and functional properties.

Usually, customers prefer custom LED PCBs which are extremely durable.

Halogen-Free PCB

LED technology is worthwhile for ecological balance to a large extent. If you intend to ensure longevity and environmental safety simultaneously, halogen-free LED bulb PCBs are the best for you.

Most noteworthy, they last longer than traditional halogen-free circuit boards. These PCBs offer outstanding solder connections that enhance their usability.

Halogen-Free LED Bulb PCB

Manufacturers incorporate LED PCBs in numerous lighting applications because of their beneficial features. The most significant applications of these PCBs include –

Telecommunication Sector

LED PCB strips and connectors are very common in the telecommunication sector. These elements ensure smooth signal transmission from the source to the receiver. Besides, LED technology promotes signal integrity in communication.

Medical Industry

Medical instruments like lighting tools, surgery machinery, etc use LED technology to a large extent. This equipment requires high-power light-emitting diodes.

That’s why LED Aluminium PCBs have significant use in the medical sector. Moreover, the durability and fast heat transfer capability are useful for scanning devices used in hospitals.

Computer Products

Some thermally sensitive computer accessories like CPU, deal with high power and often suffer from substandard thermal management. LED light PCB boards are worthwhile for solving this issue. So, manufacturers use these circuit boards in computer products.

Automotive Devices 

In the case of automotive cars, vehicles, etc, you need to enhance durability, a wide range of beam angles and a price-to-performance ratio. LED bulb PCBs offer these facilities when they are used in headlights, brake lights, and indicators of vehicles.

Except for these, LED circuit boards are applicable in aerospace, military industry, commercial projects, household lightings, etc.

Widely Used LED Circuit Board

The following factors are crucial while choosing a high-quality LED PCB-

• High thermal conduction
• Impressive IP rating
• Commendable flammability rating according to UL94 standard
• Economical
• Stable designs
• High-class PCB materials
• Compatibility with OEM services
• Reliable PCB manufacturer

We offer dependable assembly services for LED circuit boards. We cover almost all of your LED lighting requirements varying from tiny to long LED products. Inquire us now to experience the excellence of PCB manufacturing.

High-Quality LED Aluminium PCB

An LED PCB is an advantageous element of the lighting industry. As electronic products are getting smaller day by day, PCBs with LED components play significant roles. The major benefits of this PCB are-

Low Power Consumption

LED lights convert almost 80% of electrical energy to light form. That means LED circuit boards don’t produce unnecessary thermal energy during their functions. Besides, they can deliver sufficient light energy by consuming a small amount of electrical power. This feature improves their cost performance to a great extent.

Thermal Management

LED circuit boards contain heat sinks that ensure a reliable thermal drain in different PCB layers. Besides, PCB designs are supportive of thermal vias. Proper use of these vias and heat sink keep thermally vulnerable components of these PCBs operative for a long period.

Longevity

LED driver PCBs can handle high mechanical pressure. The IK rating of these PCB materials is around 8.

Besides, they can resist moisture and dust to a certain degree. All of these improve their lifespan and keep them functional for an extended period.

Eco-friendly

If you are a supporter of green electronics, LED light PCB is the best choice for you. LED lights don’t emit harmful mercury and UV rays. That means they have no disastrous impact on ecology.

Again, their disposal process is easy and environment-friendly.

Stable Design

LED circuit boards offer design stability in electronic products. They are compatible with single and multilayer designs that improve their functional properties.

Cost-effective

As the power consumption of LEDs is low, LED PCB price is not beyond reach. Moreover, you can easily repair or replace them. That’s why LED PCB board replacement cost is also low.

Usability

LED circuit boards have great use due to offering amazing features. You can incorporate these PCBs in various industries like medical, automotive, communication, etc.

Advantages Of LED Circuit Board

SMD (Surface Mount Device) LED PCB is a special type of high-power PCB. Here, LEDs are soldered on the circuit board through metallic contacts. There is no use of wires while manufacturers connect these devices.

Usually, SMD offers numerous advantages in LED driver circuit boards. It allows producing small-sized electronic devices that have compact and stable designs. Moreover, surface mount devices are effective to handle high component density in the PCB surface.

Most noteworthy, you can place SMDs on the circuit board by using a few holes drilled. Again, these devices are convenient to place and don’t take a huge time for soldering. These features save the entire production cost to a large extent.

SMD LED PCB

Thermal efficiency is a vital issue for lighting electronics. LED PCBs ensure proper thermal management through their effective mechanisms. That’s why these PCBs remain functional under high thermal pressures.

LED technology is compatible with heatsinks. These heatsinks can dissipate extra heat so that LED components can function smoothly.

Besides, manufacturers incorporate thermal vias in different PCB layers. These PCB vias act smartly to maintain the thermal drain. Moreover, keeping the thermally vulnerable components away from the power source helps a lot to ensure thermal efficiency.

Most importantly, you must use PCB materials that offer high thermal conduction and transition temperatures. These can improve the thermal performance of your LED light PCB boards.

Thermal Management Of LED PCB

Every PCB should be gone through regular inspection to keep it functional and faultless during operation. LED PCB is not an exception. It is mandatory to test this circuit board on a regular basis.

Various automated and manual tests are available for this purpose. Let’s have a look at worthwhile testing of LED circuit boards. You can watch this video to know how to make SMD LEDs:

AOI Test

AOI is the short form of Automated Optical Inspection. It is an expensive but effective test for LED light PCBs.

During this test, the inspector uses a well-structured AOI machine to take 2D and 3D photographs of the circuit board. Then, an automated program compares these images with ideal LED circuit board images and finds out the loopholes of designs.

If the tested PCB design does not match to a certain degree, you need to change your design. You can apply the AOI test if you want to optimize your LED high-volume PCB projects.

AOI Test For LED PCB

FPT

FPT (Flying Probe Test) is another dependable test method. Here, the inspector involves electric probes from X, Y, Z-axis. These probes touch the LED bulb PCB surface and the inspector can see the results on the computer screen.

You can check the voltage, current, power ratings through the flying probe test. Its USP (Unique Selling Point) is that you don’t require additional features here.

Besides, electrical probes shift to the next board automatically. Though the FPT takes time, it is good for low-volume PCB manufacturing due to its cost-efficiency.

AXI Test

The Automated X-ray Inspection (AXI) test is usually used to detect dimensional defects of LED driver PCB or LED bulb PCB. X-ray helps to check some portions of PCB surface where traditional tests are not viable.

You can detect faults in soldering, back drill, conformal coatings, etc. This is also a costly inspection. So, you need to think of the AXI for large-scale PCB manufacturing.

Besides, it is essential to conduct peel tests, vibration tests, thermal tests, functional tests for LED circuit boards from time to time.

LED PCBs offer a wide variety in the case of the price range, durability, functionality, etc. Usually, standard LED bulb PCB boards costs vary from $100-$500 depending on their features and applications. The following factors their cost performance most-

PCB Assembly Service

The way manufacturers assemble the PCB components is very crucial for LED circuit board costs. For example, through-hole technology is more expensive than SMT due to the involvement of drilling.

Component Sourcing And Placement

PCB components for LED mechanisms require to be collected from a cost-effective source. Besides, the way you place the components affects the PCB cost to a certain extent.

Customization

LED light PCB boards that offer custom solutions are costly. But the price will be low if you are strict with the standard designs.

Except for these, PCB Volume, component Density, layer Count, etc have a significant influence on the cost performance of LED-based circuit boards.

Cost-Effective LED Circuit Board Assembly

LED PCBs are renowned for their worthwhile power consumption. LEDs act through the conversion of electrical power into light and heat.

As LED components don’t consume much thermal energy, they can utilize the most electrical energy by producing optimum light. That’s why these circuit boards consume lower power compared to other lighting technologies.

LED PCB Power Consumption

LED PCB cluster is a light source that offers a bright output. Usually, LED clusters are found in round and square forms. They are widely applicable in commercial areas where a brighter light source is necessary.

Besides, LED clusters illuminate the fabric when the machine starts sewing.

You need to consider some issues while selecting substrate materials for LED PCBs.

• CTE (CoefficientOf Thermal Expansion) matching
• Using tight substrate weave
• Low dielectric constants
• High-class flammability (V-0 rating is preferable)
• High dielectric strength
• Using highly conductive foils
• High transition temperature
• High flexural strength
• Cost-effectiveness
• High tensile strength

LED PCB assembly is the combination of multiple tasks that include designing, component mounting, fabrication, etching, soldering, etc. You need to ensure optimum success in each step to achieve the desired result.

In that case, you have to face some considerable challenges which demand the highest priority. Such as

• Control the heat dissipation by placing heat sinks and thermal vias efficiently.
• Ensure the proper mounting of PCB components and LED chips.
• Maintain the quality through regular inspection.
• Ensure high-level LED PCB assembly machines.

LED PCB Design Challenges

SMD (Surface Mount Device) and COB (Chip On Board) are two common technologies used in LED PCBs. These technologies have some considerable differences in terms of component placement, the intensity of light, etc.

You need to have a clear understanding of both SMD and COB to optimize your lighting projects. Let’s have a look at some notable comparisons between them.

Usability

SMD LED circuit boards have versatile use in street lights, notification lights of smart devices, etc. On the contrary, COB technology is supportive of LEDs in flashlights of mobile or camera, string lights, bulbs, etc.

Number Of Diodes

COB technology supports using more diodes (almost 9 or more) along with LEDs. But SMD LED circuit boards don’t consist of more than 2-3 diodes. Sapphire wafer is the main raw material of LED.

Colour Changing Facility

SMD LEDs offer multiple alterations in their designs. That’s why they can provide color-changing facilities in PCB applications.

On the other hand, COB LED consists of a circuit and two contacts which are not enough to create a changeable feature.

Lumen Count

COB LEDs contain cooling ceramic that helps improve lumen count per watt. Besides, they can ensure thermal efficiency more conveniently than SMD LEDs.

SMD Vs COB Technology In LED PCB

A multilayer LED PCB design consists of different layers which have particular functions. Here, a list of layers is given for your convenience.

Routing Layer

This layer remains in the inner and outer portions of an LED bulb PCB. Usually, routing layers form a zone where LED components interconnect.

Mechanical Layer

A mechanical layer creates the outline of the LED printed circuit board configuration. You can find this layer in rectangular, cornered, etc shapes.

Power And ground Planes

This multifunctional layer distributes power and ground through various LED components. These layers remain in the top, bottom, or middle of the PCB designs.

Overlay

Its other name is the silkscreen layer. This layer contains texts on the upper and lower sections of PCB. You can avoid using overlays but they are important for debugging a circuit board.

Soldermask Layer 

A soldermask layer saves the PCB traces from short connections. You can find them on the upper and lower parts of LED circuit boards.

Multilayer LED PCB

LED PCB board designs offer outstanding electric properties that promote the device’s performance to a certain level. The most significant electrical properties of LED circuit boards are-

Relative Permittivity

The relative permittivity or dielectric constant indicates the force between two charges of a certain distance at free space and any other medium. It impacts the signal integrity and impedance control of dielectric materials.

Its lower value is good for high-frequency LED bulb PCB applications. Usually, LED circuit board materials have relative permittivity of 3.5-5.5.

Loss Tangent

The loss tangent or dissipation factor indicates the deficiency of power in a PCB operation. If you find a low loss tangent, it means the device will lose less power. LED driver PCB materials offer a loss tangent between 0.001 and 0.02.

Electrical Strength

It refers to the electrical potential that is required to break the insulation of PCB materials. Normally, electrical strength is measured in the Z-axis.

Volume Resistivity

This is the capability of LED components to resist electricity or insulation.

Surface Resistivity

It indicates the surface resistance of dielectric substances against insulating properties or excessive current flow.

LED PCB Electrical Properties

It’s clear that LED PCB assembly is worthwhile for simple and sophisticated display devices. They enable you to experience long-term service with outstanding mechanical and electrical specifications.

If you are worried about the assembly service of these PCBs, don’t waste time and contact PCBMay immediately. We have been providing reliable PCB manufacturing service for around 15 years.

We hope this guide helps you know the features of LED light PCB boards deeply. For more information about LED circuit boards, get in touch with us.