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Stencil, Solder Paste & Printing Defects - Poor Definition

The main part of the print is satisfactory but the ends of the paste deposits are deformed. There has been movement of the board or stencil during separation.

It is felt that the deformation of the print should not cause a problem after component placement and reflow. However, it is important to eliminate the cause for future production. Problems normally get worse not better by themselves.

Figure 1: The ends of the paste deposits are deformed.


More Stencil, Solder Paste & Printing Defects:

Poor Definition
© 2007 Trafalgar Publications
Text and photos courtesy of Bob Willis