This is a plated thru hole (PTH) solder joint where the land on the solder side of the board has lifted due to a combination of excessive z-axis expansion of the laminate during wave solder and shrinkage stress in the solder fillet on cool down.

This is a plated thru hole (PTH) solder joint where the land on the solder side of the board has lifted due to a combination of excessive z-axis expansion of the laminate during wave solder and shrinkage stress in the solder fillet on cool down.

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