Lead Free Technology

The pace in Semiconductor and Electronics Company is very fast, to survive with this kind of business one should meet the criteria of the customer which are High Quality, Speed/Delivery, Cost, Safety and Environment friendly.Lead Free technology had drastically went up, with the WEEE/RoHS directives outlawing lead from electronics, manufacturers around the world are driving the implementation of lead free electronics assembly to be competent in this business.

The main reason for shifting to Lead free process is because the solder lead is hazardous to health that may cause vomiting, diarrhea, convulsions, coma or even death. And also can contaminate or poison the environment. The advantage of Lead free solder: Environment friendly, specific heat is large, non poisonous and electric resistance is small. For its disadvantage; the material cost is higher, higher melting point and has dull and un-shinny finished. Here is the finished appearance of lead free and non lead free:

Sample PCB soldered by lead free

Sample PCB soldered by non-lead free

Lead Free solder finished has a dull appearance compare to glossy effects of non lead free solder. The dullness appearance is due to the silver found in the compound. The composition of Solder Lead is Tin (Sn) and Lead (Pb), while for the Lead free it is Silver (Ag), Copper (Cu) and Tin (Sn).