Depending on the HASL process the plating can become thin enough that intermetallic phases are growing through. Bevore starting any deoxidising it might be helpful to check that. Guenter >-----Ursprüngliche Nachricht----- >Von: TechNet [mailto:[log in to unmask]] Im Auftrag von Lee Whiteman >Gesendet: Donnerstag, 10. Dezember 2009 19:54 >An: [log in to unmask] >Betreff: [TN] BOARD SOLDERABILITY > >One of my colleagues has a HASL finished board, that sat in our >stockroom for ~ 10 years, and of course he want to use them (EOY >Billing). > >Ran the board through wave soldering, and it did not solder at all. Good >news was that the board was not damaged by the heat - it just was not >solderable. I do not want to use a more active flux since it will be >difficult to clean. > >Are there any solutions / processes that can restore board >solderability? > >Thanks in advance. > >Lee Whiteman, PMP >Senior Member Engineering Staff >L-3 Communications East >Telephone: (856) 338-3508 >FAX: (856) 338-2906 >E-Mail: [log in to unmask] >