Hi all,

recently we faced a quality issue with one of our boards. The surface
finish of this board is selective Gold.

When the board is sent through the wave soldering machine, some parts of
the PCB catches solder while others do not. The problem area is random.

What could possibly cause this problem? Will sending the boards through a
5% acid concentration cleaning line help? Will it damaged the Gold surface?

Please advise. Thanks.

---------------------------------------------------------------------------------
Technet Mail List provided as a free service by IPC using LISTSERV 1.8d
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives
Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional
information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315
---------------------------------------------------------------------------------