Author Archives: Erin

rework your pcb

Reworking Your Defective PCBs?

Did You Know That We Can Also Rework Your Defective PCBs?

When you put in a large order for printed circuit boards from a PCB assembly service provider, you may find that a few circuit boards are defective in each bunch. Rather than write these circuit boards off as a loss (and lose your investment), you may be able to give them new life.

At ACME PCB Assembly, we may be able to re-work and repair some defective printed circuit boards. Often, this requires de-soldering and re-soldering components. This is manual work that must be performed by a trained technician. Fortunately, we have highly qualified staff members who can perform these repairs for you. This way, you don’t have to write off so many PCBs and can re-coup at least some of your costs.

PCB repair and rework services are an essential a process as manufacturing. Ensuring that any design flaw or damaged PCB component is repaired immediately will help maintain the PCB’s performance. In addition to these services, we conduct functional tests on your PCBs after the repair work is completed. This is performed to ensure that the device is running as per application and industry requirements.

We closely match new incoming inquiries to board house equipment and capabilities, ensuring you receive only those inquiries that you are interested in Acme Circuit board assembly provide PCB fabrication service in the development and manufacturing of quality single, double sided and Multi-Layers printed circuit boards for the computer, medical, transportation, communication, aircraft, aerospace and related industries.

At ACME PCB Assembly, we take full responsibility for your printed circuit board order. This means we that we use only ACME PCB Assembly certified suppliers as our offshore partners.

Want to see what we can do? Contact us today to learn more about our PCB repair and modification services.

Printed Circuit Board Fabrication

Protecting your PCB with Solder Mask

You might be wondering what solder mask is and why it’s important.  Solder masks are a very important part of protecting a PCB.  Solder mask, or solder resister is a thin covering that protects the PCB from oxidation.  It also prevents solder bridges from forming between solder pads that are close together. One example of other ways that solder masks can be used effectively by companies are how solder masks are traditionally green but are also available in different colors. The Different colors can be used to tell apart revisions easier.

If you have a revision made and already have one board green then the revision done using two white boards, you can tell the difference just by looking at it. The color of the solder masks has no effect on the performance of the PCB itself. However, the difference between the colors is the resolution of the board will be different. Colors like red and blue match the iconic green PCB in resolution. Black and yellow solder masks however have significantly less resolution than green and the clear solder masks have greater resolutions.

Solder Mask on Printed Circuit BoardsThere are many theories why solder masks were originally green. One of the reasons was because when the solder mask was first produced, the base resin was a brownish yellow and the hardener was a muddy brown. When you combined these two components to form the solder mask, it turned green. Another theory was because green has been proven by many scientists that the color is the most visible and noticeable to the human eye. Colors are just different wavelengths and yellow and green are the wavelengths that are most easily noticeable under normal light. Green is the easiest to see, and easy on the eyes so they won’t tire the human out. This factor helps assemblers and quality control inspectors so maybe that is why green is the iconic color that the image of a PCB has come to accept.

Contact Us Today for more information about our services.

Declaration of Metal Conflict-Free Metal

At Yun Industrial Co., Ltd. dba: ACME PCB Assembly, we are fully committed to ethical sourcing and responsible business practices throughout our entire supply chain. We proudly declare that all metals used in our production processes are Conflict-Free, ensuring that none of our materials contribute to human rights violations or illegal trade activities.

Our Commitment to Responsible Sourcing

ACME PCB Assembly takes a proactive approach to ensure that metals such as Gold (Au), Tungsten (W), Tantalum (Ta), Cobalt (Co), and Tin (Sn) used in our electronic assemblies are not sourced from mines or suppliers involved in conflicts within the Democratic Republic of the Congo (DRC) or neighboring regions. We conduct continuous audits, supplier verifications, and compliance assessments to ensure that all materials are obtained through legitimate and ethical trade channels.

Our team works closely with suppliers who adhere to the guidelines established by the U.S. Dodd-Frank Wall Street Reform and Consumer Protection Act (Section 1502) and the OECD Due Diligence Guidance for Responsible Supply Chains of Minerals from Conflict-Affected and High-Risk Areas.

Verified Conflict-Free Supply Chain

As a U.S.-registered company, ACME recognizes that trade routes originating directly from the DRC or transiting through Rwanda, Burundi, Uganda, Tanzania, and Kenya are classified by the United Nations Security Council as “non–conflict-free.” To maintain transparency and accountability, we ensure that none of our metal sources are connected to these regions or any non-governmental military groups.

We hereby confirm that all metals used in ACME PCB Assembly products are Democratic Republic of Congo Conflict-Free.

Quality, Integrity, and Customer Partnership

Our commitment to conflict-free sourcing reflects our broader mission—to be a trusted partner to our clients by consistently providing superior quality products, competitive pricing, and on-time delivery. As a full-service contract electronics manufacturer, we offer both Surface Mount (SMT) and Thru-Hole (PTH) assembly capabilities, supported by state-of-the-art equipment and a team dedicated to ethical, sustainable production.

By choosing ACME PCB Assembly, customers can have confidence that every board we produce meets the highest standards of quality and integrity—both technically and ethically.

Flexible Circuit board

Trends in PCB Technology 2025: HDI, Flexible PCBs & Embedded Components

The world of printed circuit board (PCB) technology is evolving rapidly. As design demands grow denser, smarter, and more compact, three trends are defining the next generation of electronics: High-Density Interconnect (HDI), Flexible & Rigid-Flex PCBs, and Embedded Components. At Board Assembly, we’re keeping a close eye on these advances to ensure our clients stay ahead of the curve.

1. HDI: Packing More into Less

HDI technology enables PCBs with tighter trace spacing, smaller vias, buried and blind vias, and multiple layers of interconnects. These capabilities support miniaturization while maintaining signal integrity. In fact, Ultra-HDI is pushing the envelope even further, with features like microvias smaller than 2 mil and dense layer stacking becoming more commonplace in 2025.

For applications in high-speed communication, computing, and mobile devices, HDI is indispensable. It allows more functionality per square millimeter and reduces signal path length, which helps with high-frequency performance.

2. Flexible & Rigid-Flex PCBs: Form Meets Function

Rigid-flex and flexible PCBs bridge the gap between rigid boards and adaptable electronics. As IoT, wearables, and foldable electronics grow in importance, demand for flexible interconnects is rising sharply.

These flexible circuits allow boards to bend, fold, or conform to shapes, reducing connector count, saving space, and improving reliability. Designers are combining rigid and flex segments into single boards (rigid-flex) to gain mechanical stability where needed and flexibility where required.

In 2025, we’re seeing material innovations: thinner substrates, more durable flex films, and improved adhesion layers, all designed to survive repeated bending cycles and harsh environmental conditions.

3. Embedded Components: The Next Level of Integration

Embedded component technology involves placing passive and sometimes active devices (resistors, capacitors, ICs) within the layers or substrate of a PCB rather than on its surface. This approach reduces board surface complexity, shrinks form factors, and improves performance by shortening signal paths.

By embedding components, PCB designers can reduce external solder joints, minimize parasitic inductance, and better manage circuit density. This trend is especially relevant for compact, performance-sensitive sectors like aerospace, medical devices, and wearable electronics.

Printed Circuit Board FabricationWhy These Trends Matter for Your Projects

  • Smaller form factors: More capability in less space.

  • Better performance: Shorter interconnects, cleaner signal paths, less noise.

  • Reliability & durability: Fewer external interconnects, more mechanically robust designs.

  • Modern applications: These technologies enable cutting-edge devices in AI, 5G, IoT, and more.

At Board Assembly, we support HDI, flexible, rigid-flex, and embedded-component assemblies to meet the demands of tomorrow’s electronics. Whether you’re prototyping or producing in volume, we’re ready to partner with you.

Turnkey Yun Industrial

An Overview of Board Assembly’s Full Turnkey Solutions

 

pcb assemby turnkeyWhen it comes to printed circuit board (PCB) manufacturing, the terms “full turnkey” and “turn-key assembly” are often synonymous with efficiency, quality, and convenience. At Board Assembly, we offer comprehensive solutions that cater to every aspect of PCB production. Our full turnkey services are designed to streamline the entire process, from initial design and prototyping to final production and testing, ensuring that every product meets the highest standards of quality and reliability.

What is Full Turnkey in PCB Assembly?

Full turnkey PCB assembly refers to a process where the manufacturer, like Board Assembly, takes complete responsibility for all aspects of the production. This includes procuring the raw materials, managing the supply chain, manufacturing the PCB, and handling quality control and testing. By opting for a full turnkey solution, clients can save time and reduce costs by avoiding the need to coordinate multiple vendors or manage various stages of the assembly process.

At Board Assembly, our full turnkey services start with a detailed understanding of the client’s needs. Our team of experts collaborates closely with clients to understand their project requirements, budget constraints, and timelines. From there, we handle everything, including sourcing high-quality components from trusted suppliers. Our extensive network of suppliers ensures that we can source the best materials at competitive prices, further optimizing the cost-effectiveness of the production process.

The Advantages of Turn-key Assembly with Board Assembly

One of the key benefits of choosing Board Assembly’s turn-key assembly services is the level ofRecycling Unused PCB control and oversight we provide throughout the entire production process. By managing every aspect of the assembly in-house, we can ensure stringent quality control measures are in place. Each PCB goes through rigorous testing and inspection phases, utilizing advanced equipment to detect any potential defects or inconsistencies. This meticulous attention to detail ensures that every circuit board that leaves our facility is of the highest quality.

Another advantage of our turn-key assembly solutions is the speed and efficiency with which projects can be completed. Because we handle every stage of the process, from design to delivery, we can significantly reduce lead times. This is particularly beneficial for companies operating in fast-paced industries where time-to-market is critical. By reducing production times without compromising on quality, Board Assembly helps clients stay competitive in their respective markets.

A Focus on Quality and Customer Satisfaction

At Board Assembly, quality is not just a buzzword; it’s a fundamental aspect of our business philosophy. Our full turnkey solutions are built around the idea of delivering superior quality products that meet or exceed customer expectations. We achieve this by implementing a robust quality management system that adheres to industry standards and continuously seeks to improve our processes.

Our commitment to customer satisfaction goes beyond just delivering a product. We provide ongoing support and services to our clients, ensuring they have everything they need to succeed. Whether it’s assistance with design optimization, troubleshooting, or after-sales support, our team is always ready to help. By choosing Board Assembly’s turn-key assembly services, clients gain a partner who is as invested in their success as they are.

Why Choose Board Assembly for Your Turn-key Needs?

Choosing a reliable partner for PCB assembly is crucial to the success of any electronic product. Board Assembly stands out in the industry due to our comprehensive full turnkey services that combine quality, speed, and cost-effectiveness. With our extensive experience and state-of-the-art facilities, we can handle projects of any size or complexity, ensuring that all your needs are met under one roof.

By opting for Board Assembly’s full turnkey solutions, you’re choosing a hassle-free, efficient, and reliable way to bring your products to life. With a proven track record and a commitment to excellence, Board Assembly is your go-to partner for all your PCB assembly needs.

For more information on how Board Assembly can support your project with our full turnkey solutions, visit our website at BoardAssembly.com and reach out to our team today.

By focusing on full turnkey and turn-key assembly services, Board Assembly provides a seamless, all-inclusive solution that enhances efficiency, reduces costs, and delivers high-quality PCBs to clients worldwide. Whether you’re a startup or an established enterprise, we have the expertise and resources to bring your vision to life with precision and excellence.