Blog
  • Relating Quality Data to Manufacturing Six Sigma or Cpk Levels

    There are many steps in the manufacture of printed circuit boards (PCBs). They include the preparation of the components and the fabricated PCB, the placement of the components or their insertion into predetermined locations on the PCBs, and the attachment of the components to the PCBs through the application of solder joints....

    2017/09/07 zhengxiaowei 130

  • Six Sigma Quality and Manufacturing Costs of Electronics Products

    Developing an accurate quality and cost model for new electronic products, specifically for printed circuit boards (PCBs) is important, since PCBs represent the major part of cost, especially for assembly and test requirements....

    2017/09/07 zhengxiaowei 112

  • PCB Assembly Cost Estimating Systems

    The PCB assembly process is usually a complement of equipment with different capabilities and constraints in terms of automation, speed, component technology, and quality....

    2017/09/02 zhengxiaowei 7

  • Application of DPMO Charts in PCB assembly

    DPMO charts are attribute charts used to monitor the quality of PCB assembly lines. They are best used instead of attribute defect charts such as U or C charts. Each type of PCB can be charted every time it is run through the assembly line....

    2017/08/30 zhengxiaowei 143

  • Example of Yield Calculations at the PCB Assembly Level

    The defect rate for new PCBs is usually calculated based on process observations for existing PCBs....

    2017/08/19 zhengxiaowei 117

  • Application of The Cause and Effect Diagrams

    This tool shows the relationship between the effect (reject) and its possible causes. It is used to logically group and identify all possible problems....

    2017/08/17 zhengxiaowei 84

  • A QFD Example for Improving The Quality of PCB Assembly

    A QFD example for improving the quality of a manufacturing process is shown in Figure 1.4. In this case, the PCB assembly, consisting of surface mount technology (SMT) solder processes, was analyzed, ...

    2017/08/12 zhengxiaowei 132

  • Why Six Sigma Can Be Widely Used in Modern Industries

    Six sigma can be used as a standard for PCB design and PCB manufacturing, as well as a communication method between design and manufacturing groups, especially when part of the design or manufacturing is outsourced....

    2017/08/11 zhengxiaowei 62