DVD-35C-K: Solder Paste Printing — Defect Analysis & Prevention
Second part in a series (with DVD-34C, Solder Paste Printing), this DVD defines typical defects associated with solder paste printing, discusses possible causes, and offers recommended solutions. Reviews lack of coverage, bridging, misalignment, solder paste volume/print shape, including dog-ear, pump, scoop, slope, and edge definition. Adjustments include kneading paste, squeegee pressure and speed, downstop, snap-off, and temperature. Stresses the importance of preventive maintenance.
Time: 24 minutes.