Blog
  • 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....

    2017/09/23 zhengxiaowei 117

  • PCB Fabrication Cost and Quality Alternative Example

    An example of the cost and quality alternatives for PCB fabrication is the choices made when laying out a PCB, depending on the quality and complexity of the alternatives selected....

    2017/09/22 zhengxiaowei 120

  • Printed Circuit Board (PCB) Fabrication Technologies

    Conventional PCB fabrication (raw PCBS) utilizes subtractive copper etching to produce circuitry. This process is generally carried out in a number of steps, as shown in Figure 6.6, where different metals are plated on the raw PCB only to be removed at subsequent processes....

    2017/09/21 zhengxiaowei 3

  • 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 127

  • 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 108

  • 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 3

  • 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 140

  • 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 115