A Brief Discussion on the Hazards of “Fingerprints” on PCBs and Prevention Methods
Abstract Printed Circuit Boards (PCBs) are essential components in modern electronics, and their reliability directly impacts the performance and longevity of electronic devices. However, during manufacturing, handling, and assembly, human contact often leaves fingerprints (“finger marks”) on PCB surfaces. These fingerprints can introduce contaminants such as salts, oils, and moisture, leading to corrosion, poor solderability,…















