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Skipped Measuring Pads after Wave Soldering

Often one finds after wave soldering that some measuring pads on the solder side of the board were not soldered, while all the joints are soldered well. Although there seems no lack of solderability, due to the good wetting of the surrounding joints, one wonders why these pads seems "unwettable". 

This document explains why this happens along with provide a solution for the issue. 

See attached for complete article.

Jeff is the author of this solution article.

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