BQC insists on lead-free production.
The widespread use of lead-free solder, friends will guess whether it means that all PCBA boards are lead-free process and use lead-free solder? In fact, not all SMT processing uses lead-free solder, because sometimes, considering the cost or other problems, many circuit board manufacturers will continue to use lead technology.
Appearance: on the circuit board, the surface with lead solder first looks bright white, while the lead-free solder presents light yellow (because the lead-free solder contains copper metal).
Hand feel: when you wipe the solder with your hand, the lead-free solder will leave a light yellow trace on your hand, while the lead solder will leave a black trace.
Composition: lead solder is the two main factors of tin and lead, while lead-free solder is less than 500ppm), and lead-free solder generally contains tin, silver or copper metal elements.
Use: lead solder is used for the welding of lead products. The tools and components used are lead. Lead free solder is used for lead-free soldering of products exported to Europe, America and other countries. Its tools and components must be lead-free.
