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Wave Soldering Defects - Joint Contamination
The top of the plated through hole in Figure
1 has been contaminated during the soldering operation. The
temperature has
caused the coating on the resistor network to soften and has contaminated
the board surface. During pre heat the top board temperature would
normally be 100-110°C and may well reach over 190°C when contacting
the wave. The component should not have caused this problem if
normal process conditions are maintained. The component should
be reassessed for process compatibility.
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| Figure 1: The coating on the resistor network has softened
and contaminated the plated through hole surface. |
Wave Soldering Defects:
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Joint Contamination | | |
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