日: 2026年8月27日

PCB Tombstoning: Causes, Prevention & SMT Assembly Solutions

Precision defines success in electronics manufacturing. Even minor process imbalances can trigger significant defects during production. PCB tombstoning remains one of the most frequent issues in surface mount technology (SMT). This defect occurs when a component lifts on one end during solder reflow and stands vertically on the board. Engineers often call this the tombstone effect in PCB assembly. It typically affects small passive components like resistors and MLCC capacitors. Consequently, this issue directly impacts product reliability, yield rates, and overall production efficiency. Understanding the root causes and prevention methods is essential for achieving high-quality SMT PCBA services. What Is PCB Tombstoning? PCB tombstoning is a specific manufacturing defect occurring during reflow soldering. […]