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• Engineering Implementation of High Performance PCB Design
• 来源：EDADOC     作者：Hans Axiao Bridge Tang     发布时间：2008-07-23 08:12:01    评论(0条)  
  

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• 2.Challenges of the cost

  The cost for PCB consists of explicit cost and implicit cost

  The explicit cost mainly includes production cost of  PCB and cost of  PCBA.

  In regard to control of explicit cost, we can reduce the explicit cost for design of PCB by having a good knowledge of technological capacity of common PCB factory and the technological requirements for chip devices, selecting suitable layers and setting proper stackup and design parameters.

  The implicit cost includes cost of labor, technological risks and time cost during design of PCB, especially the opportunity cost for coming into the market.

  In fact the implicit cost for design of PCB is much larger than the explicit cost.       

  For example, the opportunity for the market of mobile phones is about half a year. If one more research and development has to be carried out due to problems existing in PCB design, for fashionable mobile phones it means not only a time loss of one month or two but also an absolute failure for them.
   
  With regard to control of implicit cost, the senior managers and chief manager in charge of R & D shall possess the concept of “paying close attention to important points, easing control over unimportant ones, and achieving win-win cooperation and one-time success”. At the first stage of design, they shall take the cost into account, and seek suitable outside resources to reduce the implicit cost in product research and development.  
  

  
  
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