What is the Difference Between Lead Free HASL and HASL?
With the continuous development of the electronics industry, the technical level of PCB is also rising. Common surface treatment technology include HASL(Lead Free HASL and HASL) , immersion gold, gold plating, OSP, etc. HASL is to coat a layer of tin-lead alloy on the copper surface to prevent the copper surface from being oxidized , and t hen provide a good soldering base for subsequent assembly. Do you know the difference between lead free HASL and HASL ? 1. Lead-free HASL belongs to environmentally protection process and does not contain harmful substances "lead" ; HASL is not an environmentally protection process and contains harmful substance "lead", which is harmful to human body for long-term use. 2. The lead content of lead free HASL s...