Main Types of PCB Assembly Processing Pollution

This Gold Phoenix PCB Knowledge Center article outlines the main types of PCB assembly (PCBA) processing pollution and their impact on board reliability.

PCBA pollution can adversely affect the reliability and stability of PCBs.

The common types of PCBA pollution are as follows:

1. Pollution and oxidation of components and PCBs can cause surface contamination during PCBA assembly.

2. Flux residues from the soldering process are a common type of PCBA processing pollution. Handprints, chain claws, and fixtures can also contribute to processing pollution.

3. Pollution from common items such as plugging glue and high‑temperature tape.

4. Adhesion of dust, smoke, and small organic particles in the workshop.

5. Adhesion caused by static electricity.