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  • High reliability
  • Over 10 years of experience
  • Competitive price
  • Excellent quality SMD LED PCB

What mean SMD LED?

SMD means surface mounted diode.

This is a better technology than the first generation DIP LEDs. The SMD type LEDs are mounted on an aluminum substrate and enveloped in an epoxy resin.

SMD LED chip

What is a SMD LED chip?

The abbreviation SMD refers to a ‘Surface Mounted Device’.

That means this is an LED Chip (device) mounted directly to a light strip, without using wires. This surface mounting technology is indeed what makes LED Light Strips possible. The numbers after the SMD simply refer to the physical size of the LED Chip.

What are SMD LEDs used for?

Due to this, SMD LEDs are widely used in domestic and industrial lighting systems, in vehicles, as well as personal electronic devices such as LED screens, televisions, projectors, and so on.

SMD LEDs with the RGB system are used for decorative lighting and big full color image screens.

What are SMD LEDs used for?

Venture SMD LED PCB is a new mount semiconductor light-emitting device. We are a professional manufacturer of SMD LED PCB in China for more than 10 years.

As a professional manufacturer and supplier, we are committed to producing excellent quality SMD LED PCB for your projects.

Venture SMD LED PCB featuring:

  • small scattering angle
  • light uniformity
  • high reliability
  • light colors including white colors

Your Leading SMD LED PCB Supplier in China

Venture is more than 10 years in providing SMD LED PCB throughout the world.

We can offer low cost and maximum design flexibility, and energy efficiency SMD LED PCB.

Our SMD LED PCB is designed to incorporate into various lighting applications.

Venture SMD LED PCB is best suited for:

  • telecommunications
  • automotive
  • computer
  • medical

Furthermore, you can use our SMD LED PCB for cars on indicators, headlights, brake lights, etc.

Venture SMD LED PCB is applicable especially if your wire is thin.

You can place SMD LED behinds a screen and a small screen in your packaging to be cleaner for your device.

We can also produce Venture SMD LED PCB with multilayer FR-4 substrates.

So, in order to transmit heat, get power, and ground layers, you need to have a pattern of plated or closely-spaced filled through vias under each component.

Venture is committed to excellence and our innovations of SMD LED PCB are an example of our commitment.

We are one of the biggest SMD LED PCB manufacturer in China, offering international companies of all sizes with the highest quality SMD LED PCB and production services.

In fact, we are committed to adhering to the strictest standards to make professional and advanced SMD LED PCB for your projects.

For more information about our SMD LED PCB, please don’t hesitate to contact our team now!

SMD LED PCB: The Ultimate FAQ Guide


This guide will answer all your questions about SMD LED PCB.

Whether you want to learn about the material type, component, number of layer or features, you will find all information right here.

Keep reading to learn more.




SMD stands for Surface Mounted Devices and is a unique kind of high-power LED light.

Since the LED is on the surface, there are no wires, and the tiny metallic contacts are soldered directly on the circuit board.

How Does An SMD LED PCB And An SMT Compare?

SMT, which stands for Surface Mount Technology, is a process while SMD LED PCB is a device.

SMD LEDs are electronic parts that you will mount on the surface of a printed circuit board.

Also, SMD LEDs are energy-efficient and will offer a high-quality lighting experience.

Besides, you will use SMD LED PCB on various portable devices, consumer electronics, handheld devices, etc.

SMT is a technique that you will use to place electronic parts on a printed circuit board, such as an SMD.



Also, an SMT operator will monitor and alter the device that creates printed circuit boards using an SMT.

How Does An SMD LED PCB And THT Compare?

THT stands for Through Hole Technology and entails placing lead parts inside drilled holes within the printed circuit board.

After that, you can either solder the leads on pads or land on the side of the PCB meant for soldering.

Besides, you will use a soldering iron, operating it by hand or by a wave soldering technique, to place the solder.

An example of a THT is soldering a DIP [dual-in-line-package] IC on the printed circuit board.

An SMD LED PCB is a piece of electronic equipment in which the LED is mounted on the surface of the printed circuit board.

How Does An SMD LED PCB And COB Compare?

SMD LED is a popular LED in the market since it involves permanently fusing the LED on the surface of the printed circuit board.

They are versatile, and you can find them in string lights, light bulbs, the notification light on your mobile gadget, etc.

COB stands for Chip on Board and is a recent development towards making more energy-efficient LEDs.

Besides being on the board, COB LEDs have more diodes than SMD LEDs, which are normally nine or more.

Regardless of the number of diodes, COB contains one circuit and two contacts, making them panel-like.

On the other hand, SMD LED will appear like a conglomeration of smaller lights.

SMD LED can create color-changing lights, while COB LED cannot create this effect as it has two contacts and one circuit.

You require multiple alterations to create this color-changing capability.

This effect makes COB LEDs suitable for single-color usages.

COB LEDs emit more lumen per watt ratio and heat efficiency due to the cooling ceramic within them.

Also, COB LED can produce more lumen and less energy, and you can find them in several bulbs, mobile phone flashlights, camera flash, etc.

Chip on Board(COB)

Chip on Board(COB)

What Are The Benefits Of Using Surface Mount Technology?

The emergence of SMD has a lot of benefits, some of which include the following:

  • It enables you to make smaller sized printed circuit boards
  • Also, you can achieve a higher component density
  • SMD is cost-effective since you need to drill fewer holes on the PCB
  • Manufacturing an SMD is a fast process
  • The soldering on SMDs are more reliable
  • Also, you will place the parts of the SMT at a rate of 1000s per hour
  • Besides, SMT is reliable when operating in environments that have more shake or vibration

What Are The Limitations Of Using Surface Mount Technology?

SMT technology is unreliable when it is the only process that connects parts that will experience more mechanical stress, for instance, connectors.

How Will You Solder An SMD Using A Soldering Iron?

The process is simple, and you need the following soldering tools for you to solder SMDs:

  • Soldering iron
  • Solder
  • Tweezers
  • Microscope
  • Solder flux [optional]

Begin by applying the solder flux to a single pad on the printed circuit board.

Solder flux will clean the pad hence making it simple for the solder to stick on the board.

On the soldering iron tip, apply the solder, then join the pad of the printed circuit board with the tip.

Ensure that some solder passes to the pad and apply solder to the corner pad of the chips and align it using tweezers.

Hold the chip securely and use the soldering iron tip to touch the corner pad to allow the solder to melt.

This will secure or join the pin and the pad and if the chip is misaligned. Use the soldering iron to melt the joint and align it properly.

Repeat this process with the other chips, then inspect using a microscope or loupe to ensure all connections are in order.

What Materials Makeup An SMD LED PCB?

These materials include the following:

Metal Core

These parts are effective for a variety of applications and assist in heat transfer.

The base of SMD LED PCB may contain metals such as aluminum, copper, and laminate.

These metals will improve the insulation and thermal conductivity of the printed circuit board.


This part functions by enabling technology programmers to read the printed circuit board by adding letters and numbers.


The substrate is known as FR4, which stands for Fire Retardant.

It operates by offering a foundation layer for the printed circuit board, which may vary in thickness.

The substrate enables the PCB to be rigid and can come as a flexible material to stretch.

Innovation enables the creation of plant-based substrates, among others.


It is a kind of substrate you will use when making PCBs, and they are cheap to make and less durable.

Some printed circuit boards will use epoxies and not the above materials.

These boards have the limitation of being thermally sensitive, meaning they will lose the lamination rapidly.


This stands for light-emitting diode and is a semiconductor that will glow when you apply current through it.

What Are The Types Of SMD LED PCB Available In The Market?

There are various kinds of SMD LED PCBs, and they are suitable for a variety of applications.

The available types include the following:

Single-sided SMD LED PCB

This kind of PCB contains one substrate.

Also, it uses an electrical conductor, such as copper, that protects the substrate.

Solder mask is usually on the copper layer, and silkscreen coats will mark the components of the printed circuit board.

Single-sided PCB will have one side containing the circuitry, and the other side contains electrical parts.

Single sided SMD LED PCB

Single-sided SMD LED PCB

Also, this kind of PCB is cost-effective to manufacture than the other types.

Double-sided SMD LED PCB

Here, you will coat both sides of the substrate with conductive materials with the component fused to both sides.

Besides, they are popular than single-sided PCBs.

Holes in this board will connect the circuit from one side to the other via surface mount technology.

This technique uses less space.

Multilayer SMD LED PCB

This kind of PCB performs more functions than double-sides SMD LED PCB.

It has several layers of substrates with insulating materials separating them into single sheets.

Multilayer SMD LED PCB can save more space than the double-sided counterpart when it comes to the space you can save.

Multilayer PCB can have ten or more layers and are suitable for use in machinery, among other inventions.

Multilayer SMD LED PCB

Multilayer SMD LED PCB


This board has several layers that are rigid, hence suitable for making materials resistant to breaking.

The material you will use to make this PCB is fiberglass.


The substrate that makes flex SMD LED PCBs are flexible, enabling you to form it to any shape.

Besides, they are cost-effective to manufacture than rigid PCBs.



Rigid-flex SMD LED PCB

This printed circuit board has the traits of both the flex PCB and rigid PCB.

Rigid-flex PCB enables you to attach wooden and flexible PCBs, which other PCBs cannot perform.

Rigid flex SMD LED PCB

Rigid-flex SMD LED PCB

What Are The Parts Of An SMD LED PCB?

Several parts make up an SMD LED PCB, and they include the following:

Light-emitting Diode [LED]

This part allows the current to pass through it, thus enabling it to emit light.


The resistor will regulate and control the electric current.

Also, they contain color codes to enable you to determine their value.


This part plays a vital role in intensifying the charge in the SMD LED PCB.


This component will store and supply energy or voltage to the printed circuit board.


This part allows electrical current to pass in a single direction as other passages are blocked.


This part enables you to control electric current by either allowing or blocking the flow of electric current.


This part has the function of storing charges.

What Factors Will Affect The Price Of An SMD LED PCB?

These PCBs have a wide range of complexities, reliability, quality, and price points.

Standard SMD LED PCBs can cost you a few cents to 300 USD, depending on your application.

Here are some factors that will affect the price of these PCBs:

Type Of Assembly

The cost of a printed circuit board can raise or lower depending on the type of assembly.

For instance, SMD PCB has the parts on the surface, thereby are cheaper, and the manufacturing process is quick.

However, through-hole soldering is expensive, but the components are sturdier than surface-mounted devices.

Placement Of Components

How you place the components on the printed circuit board will determine the price.

It is therefore essential to evaluate how you need to place the components, as SMD are cheaper.

Number Of Components

The price of the SMD LED relies on the number of parts within the PCB.

It is because you require to purchase these components aside from manufacturing.

Besides, ensure the SMD LED PCB is efficient to lower the cost.

Package Size Of Components

You will spend less when you purchase industry size parts package sizes, meaning you can choose these to lower cost.

Besides, you need to attach the parts using certain processes.

The price will increase if you select sophisticated, sizeable, and delicate parts.

Quantity And Size Of The Batch

The number of SMD LED PCB you purchase will affect the overall price of the PCB, besides the batch size.

Smaller quantities fetch a higher price than large quantities of SMD LED PCB.


If you need special parts, the cost of the SMD LED PCB will increase.

Besides, if you stick to standard SMD LED PCB, you will pay a lower price.

Also, potting, materials, coating, or layers will influence the cost of the SMD LED PCB.

How Does Material Selection Affect The Cost Of An SMD LED PCB?

When you use features such as gold tabs, the cost of the SMD LED PCB will rise.

Also, when the SMD PCB has a width or line spacing of fewer than 6 mils will fetch a high price.

The price will increase since it needs you to use alternate production processes.

In some instances, low mil spacing may not be successful. Thereby you will recur losses.

Some fabricators allow you to produce SMD LED PCB will line or width measurements low as 3 mils.

However, this is not necessary unless it is the only option for certain parts.

How Do Heat And Power Impact The Material Selection For An SMD LED PCB?

Several factors will impact SMD LED PCB, but heat and power are the most intensive ones.

Assess the thermal conductivity of the SMD LED PCB to determine the threshold for each of these factors.

It will define how you can turn wattage power into temperature via the material length.

Besides, there are no industry-wide thermal conductivity values.

What Is The Manufacturing Process Of An SMD LED PCB?

These are the steps that you will use:

Material Preparation

Begin by preparing the SMD and the PCB and examine them to ensure there are no flaws.

The PCB is normally flat with copper pads that have no holes, known as solder pads.

Stencil Preparation

The stencil will offer a fixed position allowing you to conduct solder paste printing.

Besides, production happens in relation to the design position of the solder pads on the printed circuit board.

Solder Paste Printing

Here, you will use a solder paste, which is normally flux and tin mixture, to connect the SMD and solder pads to the PCB.

SMD Placement

The PCB with the print work proceeds to the pick-and-place device.

Here, a conveyor belt carries them, and you will place the electronic components.

Reflow Soldering

Once you place the SMD, the boars go towards the reflow soldering oven.

The pre-heat zone is the first zone of the oven where you gradually raise the temperature of the parts and the board.

In the soak zone, you will maintain the temperature, for 60 to 90 seconds, between 140°C to 160°C.

Then, the reflow zone assists in melting tin within the solder paste and enhances bonding on the PCB.

Finally, you will cool the solder to prevent joint defects.


Clean the PCB and repair any flaws before storing it.

What Are The Layers Of An SMD LED PCB?

The three common layers are the:

1 or 2 Layer SMD LED PCB

One or Two layer SMD LED PCB

1 or 2 layer SMD LED PCB

These are simple boards suitable for some breakouts but not ideal for interfaces containing controlled impedance.


These are safe options and are suitable for breakouts, simple, and small boards.

Avoid using this PCB layer when a CPU board has a memory interface.

Four layer SMD LED PCB

Four-layer SMD LED PCB


These boards are ideal for large panels and suitable when operating several boards.


These boards are suitable for compact devices that contain restricted spacing.

They are available in wearable watches or PC motherboards.

10 Layer SMD LED PCB

This layer has several power domains and room for power planes.

12 Layer SMD LED PCB

These boards are suitable for industrial designs.

How Do The Layers Of An SMD LED PCB Work?

Here is how they operate:

Mechanical Layer

This layer reveals information about the SMD LED PCB assembly methods and printing.

Also, you can opt for several mechanical layers, and you require one mechanical layer for fabrication.

Silkscreen Layer

This layer has a top and bottom overlay and is vital for placing text information.

If you plan on not including texts, you can choose not to use this layer.

However, this layer is useful when you need to debug boards in labs.

Also, this layer can have information such as company name, serial, revision number, etc.

Routing Layer

This layer sits within internal and external components of the SMD LED PCB.

Also, it is vital for interconnecting parts, and you need to provide it to fabricators before manufacturing your board.

Solder Mask Layer

It is the visible layer when you hold the board and assists in covering the top and bottom parts.

Also, it prevents traces against shorting when the debris is on the board.

Solder Paste Layer

This layer assists in bonding SMD to the board and enhances solder flow.

Keep Out Layer

This layer indicates the working area limit on the PCB design.

Ground And Power Planes

These parts enhance the performance of the board and assists in distributing ground and power across various parts.

Split Planes

This part enables permits you to pass more than one voltage within a single layer.

What Are The Applications Of An SMD LED PCB?

These include the following:

Automotive Industry

The applications include transmission sensors, digital displays, power relays, ECU control modules, etc.


You will use this PCB for indicators and displays.


The applications include devices such as scanners, and research, diagnosis, and treatment equipment.

Computer SMD LED PCB

The applications include tablets, laptops, scanners, smartphones, computers, etc.

Other applications include:

  • Street lights
  • Airport runways
  • Solar lighting
  • Traffic lighting
  • Flashlights
  • Lanterns

What Are The Benefits Of An SMD LED PCB?

These include:

Dependable Processing

Some manufacturers use high-performance plastics LCP as they ensure accurate grid alignment and dimensional stability.

This material has remarkable solder heat resistance, ensuring smooth and dependable SMD connections.

Also, there is no need to drying these SMDs are they have low moisture sensitivity.

Besides, low thermal efficiency inhibits the PCB from dismantling when soldering.

Stable Solder Connections

When you make PCB terminals using LSF for SMDs, they offer a firm grip on the circuit board.

This is because, on every pole, manufacturers employ two solder pads.

Besides, you can fuse large components as the holding force exceeds 150 N.

Effective Assembly

When SMDs have suction surfaces and pick-and-place pads, they ensure accuracy and mounting in automatic assembly processes.

The lightweight terminals will maximize the performance.

What Do The Numbers On An SMD LED PCB Mean?

The numbers represent the physical size of these LED chips.

For instance, SMD 2835 means it is 2.8mm wide and 3.5mm long.

Number On An SMD LED PCB

Number On An SMD LED PCB

What Are The Types Of SMD LED PCBs?

There are several types of SMD LED PCBs in a variety of shapes, and they include:

  • 2835
  • 3528
  • 3020
  • 3030
  • 3535
  • 3014
  • 4014
  • 5050
  • 5060
  • 5730

What Are The Features Of An SMD LED PCB?

These include:


SMD LED emits more brightness than other LED packages like high-power LEDs, COB, or MCOB, within the same power consumption.

Thermal Management

SMD LED emits low heat with high output lumen value due to low current and voltage.

Also, you can place them separately in a light body with several LEDs.

The thermal management results in a low light decay rate, and the initial brightness level remains for a long time.

Competitive Prices

SMD LEDs cost less than high-power LEDs and COBs.

Wide Application

SMD LEDs enable you to place 3 diodes within the same chip.

This feature allows you to produce several colors, including blue, red, and green diodes.

What Are The Alternatives To Using SMD?

Here are the alternatives you can use if you do not want to use SMDs:

Through-hole Devices

These devices contain wire leads that you solder to printed circuit boards once you drill holes.

Pin Grid Array

These parts are integrated circuits available in square or rectangular shapes.

When mounting, you will insert them in sockets or through drilling holes in the printed circuit board.

Quad Flat Package

It is a type of integrated circuit that you can mount on the surface of printed circuit boards.

Also, it contains gull-wing wire leads that spread on every side.

What Is The Design And Structure Of An SMD LED PCB?

SMD LEDs come in rectangular shapes and have three cells that contain luminescent elements.

These elements emit light when current flows through them.

Resins covering the upper portion will protect the SMD cells and come in various shades and colors.

The Design And Structure Of An SMD LED PCB

The Design And Structure Of An SMD LED PCB

How Can You Test The Flexural Strength Of An SMD LED PCB?

Flexural strength is the capacity of dielectric substances not to break when you place physical stress on them.

To perform the test, support the ends and place strength at the center of the SMD LED PCB.

What Certifications Does SMD LED PCB Comply with?

These certifications include the following:

  • UL
  • CE
  • RoHS
  • IATF16949
  • ISO 9001:2008

What Are The Benefits Of A Multilayer SMD LED PCB?

A Multilayer SMD LED PCB

A Multilayer SMD LED PCB

The benefits include:

High Quality

They are reliable and of high quality since they pass several manufacturing processes.

Small Size

Since they have a layered design, they provide more functionality yet are smaller than other PCBs.


Multilayer SMD LED PCBs uses fewer connectors to interlink than single or two-layer PCBs.

This feature is vital for modern portable electronics.


Multilayer SMD LED PCB usually is strong since they need to handle weight, pressure, and heat that joins them.


Not all multilayer SMD LED PCB are flexible.

Flexibility is a feature that enables you to use the PCB in usages that may experience irregular flexing and bending.


Multilayer SMD LED PCB is a high-density system containing several single PCB layers.

The tight configuration enables the PCB to be more connective.

Also, despite the small configuration, the electrical traits make them have a high capacity and fast.

Connection Point

These PCBs can operate as single units instead of functioning with other components of the PCB.

SMD LED PCBs to have one connection point, while many single-layer PCBs have several connection points.

This feature benefits electronic designs enabling them to fit in small devices, thus minimize weight and size.

What Silkscreen Printing Technologies Are Common In SMD LED PCB?

These include:

Manual Screen Printing

This technique is plausible if registration tolerance is 0.005″, or the width of the lines exceeds 0.007″.

Also, you require stencils containing traces and texts to perform this process.

Nylon makes traces, and you direct ink to layers via the stencils, then cure it by baking it in ovens.

Besides, this task is hard to master, yet it is the simplest technique.

Direct Legend Printing

This technique is expensive to conduct and entails using inkjet projectors and acrylic ink.

Also, you will use CAD programs to place ink on the printed circuit board, then expose it to UV light.

Besides, when the printed circuit board has a silver finish, acrylic ink is not recommended.

Liquid Photo Imaging

This technique is suitable when the screen printing lines exceed 4 mils.

In this technique, you begin by covering the laminate with epoxies, then expose it to ultraviolet light.

Then you will cure and develop the PCB.

Liquid photo imaging is more accurate than hand screen printing and takes longer to set up.

What Color Options Are Available For SMD LED PCB?

SMD LED PCB can come in various colors such as:

  • Red
  • Yellow
  • Black
  • Green
  • White
  • Purple
  • Blue

What IPC Standards Are Necessary When Assembling SMD LED PCB?

These include:


This standard represents the Acceptability of Printed Boards.

The standard inspects the board once it comes from the PCB fabricators.

IPC 7711/7721C

This standard is the Rework, Modification, and Repair of Electronic Assemblies.

You will repair SMD LED PCB to IPC standards using information from this document.


It is the Acceptability Standard for Manufacture, Inspection, and Testing of Electronic Enclosures.

During assembly and inspection of the box builds, CM will refer to this standard.


It is the Requirements and Acceptance for Cables and Wire Harness Assemblies.

During the manufacture of cables, CM will refer to this standard.

Which Is The Brightest SMD LED PCB?

The brightest SMD LED PCB chips to rely on the number of light-emitting diodes within them.

More LED means the SMD will be brighter.

Currently, the 5050 and 5730 series are the brightest SMD LED PCB in the market.

What Are The Electrical Properties Of An SMD LED PCB?

These include:

  • Relative permittivity [Dk]
  • Dissipation factor [Df]
  • Volume Resistivity [ρ]
  • Surface Resistivity [ρS]
  • Electrical Strength
  • Dielectric constant

At Venture Electronics, we design and fabricate different LED PCBs, including LED ring light PCB, LED TV PCB, LED flex PCB, MCPCB LED strip light, and LED bulb PCB, amongst others.

Contact us now for all your SMD LED PCB.

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