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From Concept to Product: How to Streamline PCB Assembly Processes

From Concept to Product: How to Streamline PCB Assembly Processes

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 Without printed circuit boards (PCBs), the electronic devices that control, monitor, and regulate everyday life in various environments would not exist. But, this miniaturization of electrical circuits has its challenges when it comes to the manufacturing and assembly of PCBs. Manufacturers must follow industry best practices to ensure these critical components do not fail, even as they speed up the PCB assembly process to meet ever-higher consumer demands. There exists a close working relationship between PCB designers and manufacturers. Read on for tips on creating a great relationship and accelerating processes. PCB ASSEMBLY TIP 1: PLAN PCB PROJECTS EARLY Optimizing PCB assembly requires careful planning, including a clear description of requirements such as the following: - Bill of materials (BOM) - Gerber files - Pick and place the file - PCBA testing file Additional information is often needed for the final PCB manufacture, including assembly drawings, 3D drawings, and schematics. Manufacturers can prepare the fabrication and assembly phases more quickly with detailed documentation and PCB specifications and purchase the needed materials. Consider partnering with other key service providers, like PCB design software creator Altium Designer. Maintaining clear lines of communication with manufacturers helps ensure that PCBs are only made to standards. Choosing a manufacturer that matches communication style and frequency helps ensure a smoother process. PCB ASSEMBLY TIP 2: DESIGN FOR MANUFACTURABILITY (DFM) DFM is a general engineering practice for designing products to make them easy to manufacture. This process allows for easier detection of potential problems in the design phase, which is less expensive than discovering problems during manufacture. Edge clearance, acid traps, layout complexity, and solder masks between pads determine a PCB’s manufacturability. While DFM is a common practice in virtually all engineering disciplines, the ways it is implemented can vary. For example, each PCB manufacturer uses its guidelines and procedures that can address possible production problems during the design phase. These include consideration of the manufacturers’ capacity and capabilities, along with industry-wide best practices that are continually evolving. DFM guidelines should address these measures to avoid delays. Common factors to consider are circuit routing, panalization, and component placement. Minimize the use of complex or obsolete components that can slow down manufacturing and sourcing processes. Preliminary testing is a meaningful way to identify errors early in the design process and avoid the higher cost of fixing them during assembly, which requires rework. DFM testing can detect problems with footprint corroboration, component spacing, and component polarity, provided it’s performed by experienced engineers specializing in these procedures. Specific benefits of DFM testing include reduced costs, improved product quality, and shorter delivery times. Read: Design for Manufacturability (DFM) Process Overview PCB ASSEMBLY TIP 3: GAIN MORE VISIBILITY INTO THE MANUFACTURING PROCESS The quality of components used in the assembly of PCBs is crucial to the quality of the final product. A professional PCB assembler should have a quality assurance (QA) department that evaluates BOM components based on quality, date, and model number. In addition, assemblers should perform various tests on samples, such as material operational testing. A final inspection of PCB components should be performed to detect any missing or broken parts, circuit deformation, and oxidation. Choosing the right PCB manufacturer can be particularly challenging in today’s global economy, largely due to the many choices available. However, the United States (US) has some of the highest quality standards in the world, which are enforced by regulatory bodies like the International Organization for Standardization (ISO). As a result, US-based PCB manufacturers must adhere to high standards that meet or exceed their customers’ expectations. Consider a manufacturer’s certifications when researching the best partner for the project. PCB ASSEMBLY TIP 4: ALIGN EXPECTATIONS WITH THE PCB MANUFACTURER Collaboration between PCB designers and manufacturers can eliminate many challenges caused when the manufacturer needs to adequately understand the project’s requirements, specifications, or standards. Get the design guide: A Guide to Design-for-Manufacturing (DFM) Principles. The manufacturer should remain closely involved in the design review process, allowing them to provide insights and suggest improvement. In addition, feedback should be offered to the manufacturer after each production run, fostering a culture of continual improvement. Ensure all team members are in the loop when making design changes. This includes material suppliers that are directly connected to the manufacturer. Some collaboration tools for PCB ...

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