Top SMT Solder Paste Printing Defects: Causes, Solutions, and Best Practices in 2026
Nearly 90% of SMT defects trace back to solder paste printing, yet most are preventable with the right process controls. This guide covers the nine most common printing defects—bridging, insufficient deposits, misalignment, and more—with actionable troubleshooting steps and SPI-based solutions that help move yields from the low 90s toward 98%.