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PCB Bridging

PCB Bridging Defects

A bridge is comprised of solder that spans across two conductors that should not be electrically connected thus causing an electrical short.

Process and design-related causes of PCB Bridging Defects:

  • Excessive volume of solder due to improper pad dimension
  • Excessive volume of solder due to improper stencil aperture
  • Improper application of solder mask
  • Excessive slump of solder paste
  • Reflow-related causes:
  • Improper reflow profile for solder paste. Check against manufacturer’s specifications.
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