HASL PCB surface finishing

HASL means Hot Air Solder Leveling, is most popular PCB surface finishing because it is easy to manufacture and cheap but it is bad for environment, so now lots of countries and company wouldn't like to get HASL PCB for theirs products, so HASL (Lead Free) will be better, and you can get more information for reading the following.

HASL (Lead Free) PCB surface finishing

HASL (Lead Free) require no plumbum which is environmentally friendly and becoming more popular, please click for our environmental policy.　The shelf life of HASL (lead free) is 12 month.

HASL surface finishing structure

Following is the HASL surface, and you will find rough surface so that you have to choose ENIG if your PCB design have higher requirements, but HASL lead free will be fine if it is not high precision circuit on your PCB.

In conclusion, HASL and HASL lead free have the same process but just the Material used in HASL (lead free) process is environmental. Meanwhile we suggest to use HASL (lead free ) surface finishing for your PCBs instead of HASL surface finishing.