Wave Soldering Defects

Joint Contamination on a Printed Circuit Board

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.

Figure 1: The lead-to-hole ratio here was excessive
Figure 1: The lead-to-hole ratio here was excessive.

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As the oldest production Printed Circuit Board Company in North America, perhaps in the world, the 60-year plus story of Epec is connected to the development of the PCB and the electronics industry.

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  • Epec Founded in 1952
  • IPC Founded in 1957
  • Epec Builds PCB for Apollo 11