PCB Assembly

What is PCB Assembly and How to Choose a PCB Assemblymanufacturer?

If you’re a newbie to PCB assembly, it’s important to understand the processes and techniques used to create the final product. We’ll also cover the costs involved and the best way to choose a PCB Assembly manufacturer for your projects.

When assembling a PCB, solder paste is applied to the board in an effort to make sure that all components sit properly. The solder paste is applied using stencils. Some PCB manufacturers use these stencils to apply solder paste only to specific parts of the board. Other PCB assembly processes involve robots that pick and place surface mount components. During the assembly process, solder paste is cooled to form a solid bond with the board.

When assembling a PCB, a series of steps are required to ensure that the parts fit together perfectly and function correctly. These stages are also known as “pick and place” processes. While these steps are similar, there are important differences between each. For example, the assembly process differs between SMT and THT technologies. To produce a PCB with the highest possible quality, each stage needs to be carefully monitored by the manufacturer.

Techniques used in PCB assembly

PCB assembly can be categorized into two main techniques: traditional and automated. Traditional PCB assembly involves the use of solder paste to assemble circuit boards. Using a reflow soldering process, components are fixed to the board with a solder paste that melts around them. Both THT and SMT assembly have advantages and disadvantages, and a combination of both is often used for the best PCB assembly.

Optical microscopy is another technique used to identify defects and faults in a PCB assembly. A high-power microscope is used to examine each component individually. The process is sometimes combined with micro-sectioning to help detect individual problems. The final result of a PCB assembly process will be a flawless board. The PCB assembly process can be complicated if the wrong technique is used. If a mistake is made, the product could malfunction or fail entirely.

Costs involved in PCB assembly

There are a number of factors that contribute to the cost of PCB assembly. Typically, the lower the number of boards to be assembled, the lower the cost per unit of assembly. Prototype boards have high setup costs, while stencils and programming can be inexpensive one-time expenses. The technology used for PCB assembly plays a role in the cost, too. Through-hole technology is more expensive than surface-mount technology, but both have their pros and cons.

While the cost of PCB assembly is high, the process does not have to be expensive. By taking a few factors into account, manufacturers can accurately estimate the cost of assembling your PCBs. A typical PCB assembly price varies by about $80, although it can be less. PCB assembly costs can also vary significantly between companies. To find the most affordable PCB assembly, consider how much time and materials the project will require.

Choosing a PCB assembly company

There are many factors to consider when choosing a PCB assembly company. Choosing the right company is important to the success of your project, but you can’t rush into it, as it could result in poor quality products. Also, don’t take too long to find a company, as it could stall the process and raise your costs. Instead, choose a company that can meet your deadlines while giving you a quality product.

Quality of the work produced by a PCB assembly company is very important. While you are evaluating companies, ask about their experience and quality of work. Check their equipment and certifications, and look for feedback from past customers. Make sure you find a PCB assembly company that is reliable and provides good customer support. After all, if you’re not happy, you don’t want to end up with a sub-par product that doesn’t work for you.

What technique is involved in PCB Assembly?

If you’ve ever wondered about the PCB assembly process, You’ll learn about Wave soldering, SMT, and THT, as well as the Pick and place machine. You’ll also get to know what the different types of PCBs are. Hopefully, this information will help you to better understand the PCB assembly process and how it benefits you. Ultimately, PCB assembly is an important part of making electronic devices.


A PCB assembly process involves solder metallization, or SMT. This process involves attaching electronic components to a PCB using solder balls. As solder balls are pressed into place, they must be inspected for flaws and other defects. Once completed, the PCBs are shipped to other companies for further processing and final assembly. Final inspection is necessary to check for defects, damaged packages, and malfunctioning electronic components. The SMT assembly process requires high-quality components, and using these processes reduces costs by reducing the number of replacement parts required.

smt pcb assembly process
smt pcb assembly process


The PCB assembly process is the method by which components are attached to a printed circuit board. The board itself is composed of a fiber glass substrate and a layer of copper that forms the traces. The board also contains holes for the components to be soldered. The assembly process can be either one or two layer, depending on the need.

Wave soldering

A PCB assembly process that utilizes wave soldering involves passing an electronic printed circuit board over a cylinder of flux foam. The flux foam is generated by a plastic cylinder with tiny holes surrounded by a metal chimney. In this way, air is forced through the plastic cylinder, causing the flux foam to rise into the chamber. The wave soldering process exposes the PCB to extremely high temperatures and can cause increased failure rates and thermal shock. For this reason, it is important to pre-heat the boards in order to prevent them from becoming overheated and susceptible to the wave soldering process.

Pick and place machine

A pick and place machine is a PCB assembly machine that loads and places SMT components onto the PCB. The machine has several feeds on both sides and a head that can reach into tubes and reels. The head is operated using a small vacuum to position the PCB exactly where it needs to be. The speed of component placement depends on the size of the PCB and the size of the components that need to be placed on the board. Pick and place machines can place up to 100,000 parts per hour.

Postprint inspection

The postprint inspection stage during the PCB assembly process is crucial for quality assurance. Postprint inspection ensures that solder paste layers are deposited properly and that they are suitable for surface mounting.The inspection process involves monitoring the output of the product, using a variety of methods. Failures are investigated and the corrective action is taken, as needed.

How to Estimate PCB Assembly Cost?

PCB assembly cost varies greatly between companies. You should have at least 6 months of experience with your supplier and discuss pricing for new orders. If the costs are drastically different, this is a bad sign. Variability in cost reflects poor performance and reliability. However, the good news is that there are methods to make this process as accurate as possible. Below are some tips to help you estimate the cost of PCB assembly.

Cost of pcb assembly

PCB assembly costs can vary greatly between companies. Depending on the size of your order, you can expect to pay about $1.00 per square inch. Many manufacturers are able to offer cheaper PCB assembly at the same quality level. While some companies go over the cost of the assembly process, they may feel that their customers are worth the additional cost. They will also charge you a higher price for a higher-quality product.

Factors that affect cost

The price of PCB assembly depends on a variety of factors. PCB assembly costs can increase if the board has special features, such as copper traces and coatings. Custom PCBs are more expensive than standard PCBs because they require specialized skills and time to produce. In addition, if the PCB is large, the assembler must custom-design the bare board and electronic components to fit the final product.

Methods of estimation

The cost of PCB assembly can affect the budget of your PCB project. Understanding the cost of PCB assembly is critical to minimizing your overall cost. The final price you pay will depend on the PCB’s quality and how well it is assembled. Listed below are some methods of estimating PCB assembly costs. These methods can help you to choose the best PCB assembly company for your needs and budget. However, it is always wise to contact several companies before choosing one.

Custom specifications

Creating a custom PCB design and requesting a specific size or shape can incur a large amount of cost. Therefore, before proceeding with production, it is important to determine how much it will cost to build the PCB according to your design specifications. This way, you can tailor the assembly process and lower costs accordingly. The price of PCB assembly depends on several factors including the material used for the board, the number of layers, and the size. These factors should be discussed and agreed before beginning the production process.

Turnaround time

When it comes to quick turnaround PCB assembly, communication is key. You need to be able to communicate with your PCB assembly partner and track the progress of your project closely. A steady collaboration can help you identify problems in the component lead time, design, and board finish inspection. If you can’t communicate with your PCB assembly partner in a timely manner, you could risk an extended lead time for the PCB assembly project.

Types of PCB Assembly

There are four main kinds of PCB assembly, namely Through-hole, SMT, and Semi-additive. Read on to learn about each one and how it works. When comparing PCB assembly services, make sure to ask about minimum board dimensions. Remember, a board must be at least 50mm x 50mm. Also, remember that current transformers (also known as instrument transformers) will be used to reduce the voltage.

SMT (surface mount technology)

SMT and THT PCB assembly are both important processes in the electronic industry. The benefits of both technologies are well documented. The primary difference between the two is that SMT requires no drilling holes in the circuit board. In addition, the components are directly in contact with the PADs, or patterned areas on the board, which is then soldered with a stencil solder. Once this solder paste is applied, a pick and place machine places the components on the board. Lastly, the components are placed in a reflow oven, where they must be introduced to the vapor phase of solder.

The SMT process begins with a design phase during which the components are selected and the PCB is created. Once all the components and the PCB are complete, production can begin. The SMT process starts with solder paste printing, which is a machine-controlled process that uses a stencil of the PCB and flux. This solder paste connects solder pads to SMC. It can also involve vacuum or gripper nozzles to pick up components.

Through-hole technology

Whether you are designing an electronic circuit or are just building a simple device, through-hole PCB assembly can help you achieve your goals. These boards are made with a variety of components and require precise soldering of various parts. You must find a trusted PCB manufacturer to obtain these services. Wholepcb provides custom PCB design, manufacturing, and assembly services. Here are the major benefits of using this service.

Through-hole PCB assembly is a better option for products that require high levels of security and durability. It also reinforces components to withstand higher levels of mechanical stress. Through-hole PCB assembly is most useful for automotive, military, and aerospace products that require high levels of mechanical security. Furthermore, through-hole technology is recommended for electronic components with large sizes and high levels of power. Through-hole PCB assembly is more secure than other PCB assembly methods, but requires more time and money.


The most common process for PCB fabrication is semi-additive. This production method entails applying a thin layer of copper to a board before etching it. Subsequently, the board is plated with additional copper to reach the desired weight. After this step, the mask is removed. This process isolates individual traces for subsequent surface plating. .

Both SAP and MSAP involve copper and Desmear, but there are significant differences between the two. While SAP uses a more sophisticated combination of desmear and electroless Cu, MSAP begins with a traditional HDI PCB assembly process. The difference between the two processes is the complexity of the process and the learning curve for the PCB manufacturer. However, the advantages of both are clear. Here’s a look at the pros and cons of both.

Mixed technology

The PCB assembly process includes many steps, some of which are automated and others are manual. In addition to the actual steps of PCB assembly, there are several important choices to make when it comes to design, manufacturing, and timeframes. One important choice is what type of mounting technology to use. The three main types of PCB mounting technologies are Through-Hole Technology, Surface Mount Technology, and Mixed Technologies. This article will discuss each method and what it means for the manufacturing process.

Whether you choose THT or SMT, this method can help your company make more profit. Mixed technology PCB assembly involves integrating two technologies. InteGrated PREFORMS are interconnected solder washers that fit the pin pattern of a through-hole component. These preforms are designed to deliver precisely the right volume of solder while producing excellent fillets at every joint. Both SMT and surface mount PCB assembly technologies can benefit from InTEGRATED PREFORMS.

How to Order PCB Assembly?

If you’re not sure how to order PCB assembly, you need to know the basics. This will help you plan and monitor the process. Knowing what your needs and wants are can help you identify which components you’ll need. Listed below are some of the most important steps in ordering PCB assembly. After you’ve identified them, you can work with the supplier to create a PCB assembly process that meets your needs.

Price of a turnkey PCB assembly

The cost of a turnkey PCB assembly can vary greatly depending on a variety of factors, including the complexity of the PCB board, labor rates, and overhead expenses. The cost of a PCB assembly will depend on the board size, the number of layers, and the complexity of the components. The higher the complexity of the PCB board, the higher the cost. The longer the assembly process takes, the more the overall cost will be.

Typically, a turnkey PCB assembly service will include the fabrication, assembly, and shipping of a single PCB board. These services typically have lower prices than those of the parts purchased individually. However, you will still have to pay shipping costs and the costs associated with handling and transporting PCBs. Turnkey PCB assembly services are a good choice for high volume orders as the lead time is usually short.

Cost of SMT assembly

SMT is a type of surface mount technology. This technology makes it simple for pick and place machines to place components. It is useful for reducing the turnaround time, or the time it takes to complete the manufacturing process and leave the customer satisfied. However, this type of assembly involves increased costs. This article discusses how SMT assembly works and its benefits. For more information, contact a SMT assembly manufacturer. The cost of SMT assembly varies depending on the volume of components.

In-house SMT assembly is a good option for manufacturers of low to medium-volume specialized electronic products. It can help cut the cost of direct labor, which is typically around $2 per assembly. However, this figure does not include manufacturing overheads. The payback period of an SMT assembly line will depend on the company’s needs and the level of automation. Once a company has determined the payback period of the SMT assembly line, it can decide whether it will be cost-effective to purchase the equipment.

Cost of mixed technology assembly

A typical PCB assembly requires both conventional and surface mount components. A dual-wave soldering process is used to mount the latter. There is one short wave and one main wave for each component. The main wave is larger and is 30 to 40 mm wide. Soldering procedures are defined by the component specifications. The components can be soldered at the required temperature and for the necessary length of time. Depending on the complexity and number of components, manual or wave soldering may be the best option for your mixed technology PCB assembly project.

The most common type of PCBs used in assemblies are rigid. The base material is fiberglass, but there are many other types of materials as well. Fiberglass is the most common base material, but phenolics and epoxies are also used, but they tend to be less durable. Some PCBs combine both types of materials to save cost and space. During the design phase, the PCB layout must be carefully considered to determine the most efficient approach to assembly.

How to Save PCB Assembly Cost?

PCB assembly costs vary significantly among manufacturers. In general, labor costs are cheaper in South Asia and China. Therefore, you should choose a PCB assembly company that uses cheap labor, as these workers can save you as much as 50% of the PCB assembly cost. Also, consider the complexity of the product. More complicated designs take more time to manufacture, while simple products require less labor. When you are looking for a PCB assembly company, consider whether the product requires a high-quality finish.

PCB assembly cost is also affected by turnaround time. Turnaround time is the length of time needed to complete the manufacturing process. As you might imagine, the faster the turnaround time, the higher the cost. In some cases, the faster turnaround time increases the price of PCB assembly by 33 percent. Additionally, it forces manufacturers to source materials from U.S. manufacturers, which may cost more than their Chinese counterparts.

Another factor that affects the PCB assembly cost is panelization. You should design your PCB according to the PCBA manufacturer’s requirements, and optimize panelization. In addition, you should establish a procedure for qualifying sources of lower cost. With these tips in mind, you can easily determine how much your PCB assembly will cost. This information will help you choose the best PCB assembly company. A PCB assembly calculator can help you make the right decision.

Wholepcb established in 2005, a professional PCB manufacturer specializing in PCB fabrication, PCB SMT, Through hole assembly, Mixed assembly, turnkey assembly service.

Contact Us For Quotation Now

Email:  sales@wholepcb.com

Learn more our story click here>>