When handling PCBs, avoid touching which feature to minimize damage?

When handling PCBs, avoid touching which feature to minimize damage?

• A. Copper traces
• B. Edges
• C. Component leads
• D. Board backside

Answer: (A)

Copper traces are the parts to avoid touching. They are the conductive pathways that carry signals, and touching them with bare fingers transfers skin oils, salts, and moisture that can cause corrosion, leave residues, and even create leakage paths or affect solderability later. Keeping fingers away from the traces helps preserve electrical integrity and longevity of the board. Hold the PCB by the edges and use clean hands or gloves to minimize contact with the conductive areas.

Copper traces are the parts to avoid touching. They are the conductive pathways that carry signals, and touching them with bare fingers transfers skin oils, salts, and moisture that can cause corrosion, leave residues, and even create leakage paths or affect solderability later. Keeping fingers away from the traces helps preserve electrical integrity and longevity of the board. Hold the PCB by the edges and use clean hands or gloves to minimize contact with the conductive areas.