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Solder bridges at SOT23

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Description:
Solder bridge between the two contact leads of a SOT23. It can be seen that after the wave soldering process solder is sticking to the component body. This defect is quite rare, but it illustrates the great variety of possible defects. This solder bridge was caused by unsuitable soldering parameter and/or contaminated solder.

Causes/Remedy:
  • contamination of solder
  • dross abets formation of solder bridges/solder flags
  • unsuitable soldering parameter

Source: visual, optical inspection - general view
Solder bridge at a SOT23
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