The Art of Lead-Free Soldering

Lead-free solder requires a completely different approach than its tin-lead predecessors.

Managing Thermal Mass

• Apply more heat for longer periods to compensate for lower thermal conductivity.
• Use a higher temperature setting on your soldering iron, typically around 380 to 400 degrees Celsius.
• Ensure the entire component and its pad are heated evenly to prevent thermal shock.

Choosing the Right Tip

• Select a larger chisel tip for large ground planes to transfer heat efficiently.
• Use a fine conical tip for delicate passives and QFN leads.
• Clean the tip with a damp sponge before every single joint to maintain thermal transfer efficiency.

Mastering these thermal dynamics is the key to successful lead-free repairs.