What effect does solder mask technology have on PCB

2019-11-20 16:31Writer: qyadminReading:
      Given that we've delved in to the solder mask process, let’s examine how this technique impacts your PCB. As previously mentioned, the solder mask effects PCB assembly and table quality. The most known influences of solder mask are the following:

   Avoidance of solder bridges

  Offers a solder dam between solder important joints and other conductive regions of the panel where solder bridges may form, possibly leading to brief circuits or plank damage.

   Reduced amount of solder paste consumption

  Allows less solder paste to be utilized during solder process.

   Additional insulation of the components from PCB

  Serves as an insulator between table components.

   Safety of the PCB

  Guards against contaminants which may be introduced from managing the board.

  Prevents oxidation that may shorten the functional duration of the device.

   Increasing the break down voltage

  May boost the break down voltage of the board’s dielectric materials, providing additional safety against arcs or corona typically associated with high voltage (above 1 kV) boards.

    Avoidance of metallic whiskers

  Assist in preventing the development of tin whiskers mainly associated with lead-free solder or tin-plating for digital components.

  Certainly, the solder mask process has important implications for your board’s manufacturability and procedure once deployed. Nevertheless, there are situations where it might not be possible or desired to have solder mask, like small components and fine pitches on ball grid arrays (BGAs), for example. Before making a decision to forego solder mask and pursue design alternatives, you should consult with your CM to ensure there are no undesireable effects on your board’s performance or reliability.


   Solder Mask Considerations

  Although, there is absolutely no clear consensus on why green is the predominant color used through the solder mask process, there are characteristics that support its utilization. First, green solder mask may be used to create the tiniest solder mask dams (0.1 mm). Red, blue and yellow-colored can produce dams of 0.12 mm. Dark and white, which might provide the finest comparison for your silkscreen, produce 0.15 mm solder mask dams. Assisting the use of green may be the actual fact that green light has a wavelength of around 550 nm, making green the colour most noticeable to the eye in daylight.

  
What effect does solder mask technology have on PCB


  However, color is but one of the considerations that impact the kind of solder mask that has to, or even can, be utilized. The primary concern is the kind of system where the panel will be deployed. PCBs destined for utilization using industries or for several applications must abide by standards established in IPC-SM-840D.(http://www.ysbackupboard.com)


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