High Volume PCB Assembly

The constant quest for technological innovation has caused a sharp increase in demand for PCBs in the ever-evolving world of electronics, which includes everything from cell phones to car electronics. PCBs are produced on a huge scale in this method, guaranteeing efficiency, uniformity, and quality to satisfy the demands of the worldwide electronics market. High-volume printed circuit board assembly is a crucial step that sets industry leaders apart.
At FC, we offer dependable and great high-volume PCB assembly services. We will carry out strict quality control for our products. Therefore, it enables us to keep our commitment to quality. Our elaborative and professional PCB assembly procedures make sure to give you competitive pricing.
This blog digs into the complexities and critical components of high-volume PCB assembly that you should be aware of, including methods, benefits, technologies, innovations, and factors to consider for a successful mass production run.

What is High Volume PCB Assembly?

High-volume PCB Assembly also called Large Volume PCB Assembly, is when a manufacturer assembles printed circuit boards in large quantities, totaling more than 1,000 printed circuit board circuits per production cycle. For high-volume printed circuit boards, mass production is the main goal. Productivity can be increased by using automated high-volume PCB assembly technology. It is a non-toxic, environmentally friendly method. The circuits are built efficiently, reliably, and uniformly.

The Importance of High-Volume PCB Assembly

For a variety of reasons, high-volume PCB assembly is crucial. High-volume PCB manufacturing has many advantages that enable it to be a mainstream way to produce PCBs. The following of the strengths are shown below:

Economies of Scale

Mass manufacturing dramatically lowers the cost per unit, enabling consumers to cheaper purchase electrical devices. So you can produce circuit boards inexpensively and thus dominate your target market. However, small-batch PCB assembly increases the cost per piece and reduces the competitiveness of your project.

Consistency and Quality

Rely more on automation and reduce manual operation processes, from solder paste application to inspection and testing stages. By eliminating errors and discrepancies, automated programs ensure consistency and excellent output. This increases manufacturing speed and reduces production costs. In addition, it reduces human error, which improves product quality

Fulfilling Market Demand

Keeping up with the rapidly evolving electronics market requires the capacity to produce huge numbers of goods. You can manufacture circuit boards quickly and in large quantities, which means less time getting your product to market. It allows you to complete assembly projects on time and gives you an edge over competitors.

Short Production Cycle

You will save time in the high-volume PCB manufacturing process because the production process is fully automated. Everything begins with the designing and prototyping phase, which you will complete with tools and software.

One-Time Prototyping and Design Process

The one-time prototyping and design process necessitates uniform assembly of the printed circuit boards because they will be produced or manufactured in large quantities. Making a single design and prototype that will fit every PCB will therefore save you a tonne of time.

The High-Volume PCB Assembly Procedures

The success of high-volume PCB assembly depends mainly on the successful combination of complex manufacturing processes with strict quality control protocols. It is essential to become proficient in process optimization, utilize automation, and have strong testing procedures in place to guarantee reliable, high-quality production.

Step 1: The Design for Manufacturability and Testability (DFM and DFT)

This is a philosophy where suppliers work closely with their customers to get good PCB designs that help manufacturability & testing. If used in the design stage, it will detect and correct issues that may arise long before they become problematic and expensive to rework delays.
  • Optimization: Placement, trace routing, and layer stack-up are kept in mind while designing the PCB for mass production.
  • Error Elimination:  By addressing manufacturing challenges early in the design phase, errors, and therefore rework, can be minimized.

Step 2: Solder Paste Printing

First, we apply solder paste to the printed circuit board assembly where the components are mounted. Here are two methods of applying solder paste printing: traditional stencil and modern jet printing.
  • Stencil printing offers accuracy and faster application. However, it takes time to produce stencils, which reduces turnaround time. Therefore, many manufacturers prefer jet printing for high-volume PCB manufacturing.
  • Jet printing offers more flexibility, allowing manufacturers to assemble different board designs without a different stencil each time.

Solder paste is applied and then passed through the placement machine. Since computers control their movement, all ensure greater accuracy, speed up the process, and reduce human error. These machines play an important role in ensuring the success of the high-volume assembly process.

Step 3: Placement of Components

The next step is to place the components on the board. This process is highly automated to ensure accuracy and speed. We at FC use pick-and-place machines to pick up components from the feeder and place them onto the printed circuit board with high precision. Controlled by a computer program, they can memorize thousands of components per minute, greatly speeding up the assembly process.

Step 4: Robotics and Automation

Automation and robotics take center stage in high-volume printed circuit board manufacturing lines. These technologies allow for the speedy, accurate, and error-free completion of component placement and assembly. Among these are pick-and-place tools and sophisticated soldering processes.
  1. Surface Mount Technology (SMT): Parts of a PCB are precisely positioned on its surface.
  2. Pick-and-Place Machines: These machines place components on PCBs quickly and consistently.
  3. Reflow Soldering: In which the solder is melted and bonded onto the PCB.

Step 5: Strict Quality Control

The quality of the PCB assembly is therefore vital for making the best high-volume PCBs. Manufacturers use different testing methods to identify and eliminate defects throughout the manufacturing process.
  1. Automated Optical Inspection (AOI): In this technology, with the help of cameras, PCBs are inspected automatically for defects.
  2. In-Circuit Testing (ICT): This is the name of electrical testing to ensure that the board works properly.
  3. Functional Testing: Verifies that the PCB will work as intended in a real-life condition.

Step 6: Sourcing and Supply Chain Management

The supply chain is one of the mandatory traits for manufacturing PCB in a large volume. Manufacturers must ensure that purchasing and inventory management are carried out optimally. Doing so will prevent production delays or lack of resources from being the source of any problems.
  • Component Sourcing: Finding trustable suppliers from where you will get the parts at a constant rate.
  • Inventory Control: The demand and supply are balanced, eliminating shortages or surpluses, thus providing a mechanism for effective inventory control.

Step 7: Final Cleaning, Finishing and Shipment

Now that the printed circuit board has been tested and is clean in all respects, it is time to clean it of unwanted residual flux, finger dirt, and grease. A stainless steel pressure washing tool using deionized water is sufficient to clean all types of dirt. Deionized water will not damage PCB circuits. After cleaning, the PCB is blown dry with compressed air.

The final PCB is now ready to be packaged and shipped. Assembles printed circuit boards into their final form, including exteriors and enclosures. To ensure that what they produce is packed safely enough to reach from the side of them, deliveries, and transportation.

High Volume PCB Assembly Considerations

When you do mass production PCB assembly, you must take care of the following things.

Design for Manufacturability (DFM)

While designing PCBs, one must consider high-volume assembly. This includes ensuring that the design is lead-free and RoHS compliant, taking into account patch spacing for automated assembly, and determining the best components to meet the design intent while avoiding overloading the oscillator circuitry.

Design for Testability (DFT)

DFT ensures efficient testing by setting up the necessary test points on the PCB for each component and connection. It helps to identify faulty components and shorted or open connections after production. As a result, better testability of PCB hardware ensures its functionality and improves the reliability and performance of the final product.

First Article Inspection (FAI)

A complete FAI is the first batch of printed circuit boards produced from the first large-scale production line, which can be a random sample taken from the first production run. The tests performed at this stage will verify that the product meets your requirements and that the manufacturing process is sufficiently accurate. It ensures the final printed circuit board meets all requirements before production begins.

Supplier Selection

Choosing a good partner with an experience like FC is critical for high-volume printed circuit board production. In every project, there is the inevitable back-and-forth tweaking of design, modification, processing, testing, etc. You need a supplier who will work with you to eliminate the initial stage of immaturity. And to work well as a long-term partner in all future projects.

Professional Manufacturing Skills

It is important to consider a manufacturer’s manufacturing capabilities. Does the supplier have efficient equipment? Do they have the capacity to fit the lead times for the number of products you expect to produce each year? With specialized production lines and a skilled workforce, companies can easily scale up operations to accommodate fluctuations in demand and respond quickly to sudden market changes.

Economies of Scale

High-volume PCB ensures the fine line between being too massive and being scalable. A leading factor that makes high-volume production more cost-effective is the economic scale available by many organizations through their purchasing power and manufacturing capacity, which allows procuring primary materials in larger quantities to enable the utilization of resources much more efficiently.

Strategic Partnerships

By having strong partnerships with reputable component suppliers and shipping companies, high-volume PCB assembly manufacturers could optimize their supply chain to ensure the products are delivered on time with minimal disruptions.

Innovative Technologies in High-Volume PCB Assembly

Advanced Automation

  •   Robotics and AI: While these have been employed in assembly operations for some time, their application is becoming more widespread as manufacturers look to increase accuracy, speed, and flexibility.
  •   Machine Learning: Leveraging machine learning algorithms to predict and prevent any future issues in the production.

Connect with Open-Source Industry 4.0 and Internet of Things (IoT) Integration

  Mesh Manufacturing plants: Unite Internet of Things equipment to make networked development areas for possible greatest adaptability and efficiency.
  Real-Time Monitoring: Sensors and data analytics can allow operations to be adjusted quickly in real-time monitoring production as it streams, preventing extensive downtime so an objective may be accomplished.

High Density Interconnect Technology (HDI)

  Advanced capabilities: Enabling the design and manufacturing of smaller, highly complex PCBs with higher component density.
  Better Performance: In general, it increases the performance and signal integrity of the electronic device.

Eco-Friendly Production Techniques

  Sustainable Materials: Making the environment friendly with eco-friendly materials and processes.
  Energy Efficiency: Deploying energy-efficient technologies to reduce the carbon footprint of PCB manufacturing.

High-Volume PCB Assembly challenges

The important hurdles that have to be crossed for high-volume PCB assembly are:

Optimizing Manufacturing Procedures

High-volume printed circuit board assembly relies on optimized manufacturing processes such as design for testability (DFT) and design for manufacturability (DFM) to reduce errors, save costs, and increase efficiency.

Consistency and Quality Preservation

There have to be strong controls in place, to have consistent quality in huge production volumes, use of modern test methods with very complex features, and strict regulations on quality.

Cost-Effective Strategies

Making a balance between the need for low-cost PCB assembly and high-volume production is always a daunting task. To remain competitive, manufacturers must lower prices, realize economies of scale, and streamline operations

Purchasing Components

Resolving manufacturing bottlenecks and delays can be achieved by locating a reliable supplier of components, particularly for large quantities. While attending to all the necessary aspects, suppliers should coordinate with them during this procedure.

Preserving Flexibility

High-volume PCB assembly must be flexible enough to adjust to changing market trends, often changing product designs. Manufacturers should quickly and effectively embrace the changes without compromising product quality or delivery schedules.

Ease of Transition from Prototyping to High-Volume Production

Often, layout files that expedite component selection and design issues that require frequent changes are areas that we must focus on to ensure that we can produce high-quality printed circuit boards. However, it may be challenging to implement these changes.

Retaining Traceability and Compliance

You must comply with legal regulations, industry standards, and quality assurance when selecting materials and components for high-volume PCB assembly.

Technological Complexity

Higher PCB complexity leads to highly advanced manufacturing processes and labor expertise.
With the help of modern technologies, comparable quality control systems, competent supply chain management, skilled human resources, and even experienced teams, manufacturers of high-volume PCB assembly can routinely overcome these barriers to provide competitive, high-quality products.

Partnering with FC helps you succeed

It is not feasible to complete all high-volume PCB assembly using one method. Such additional services that FC will offer are:

Prior PCB Assembly

FC offers limited free sample assembly before full manufacturing begins for examination and approval.

Turnkey Solutions

FC can offer turnkey service involving everything from sourcing parts, making circuit boards, and finally completing the assembling process and testing.

Collaborative Approach

FC by providing technical advice, design proposals, and preemptive problem-solving, producers of high-volume PCB assemblies work hand in hand with their clients to ensure that the final product exceeds or meets expectations.

Responsive Support

Customers’ queries can easily be answered by FC, which is due to dedicated customer service staff.

Dedication to Continuous Improvement

FC can improve quality and shorten delivery time by insisting on continuous improvement. As a result, we can bring more competitive value to our customers.


Large-scale PCB assembly is vital for producing large qualities of electronic devices quality-wise. Mass-scale electronics manufacturing is anything but straightforward, and that’s exactly what high-volume PCB assembly streamlines with a complex, optimized process. Using state-of-the-art technology and optimizing processes results in more high-quality printed circuit boards. In addition, at the same time, it ensures that they remain competitive and profitable. Businesses that follow this advice can stay abreast of the developments in the electronics ecosystem while enabling everything to continue working.

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