Operator mistakenly used No Clean paste instead of Clean.| 19 July, 2002
I know this is a total screwed-up.
Operator used the wrong paste. It was supposed to be a clean paste but she was issued with no clean paste. What happen was when the brd processed thru', after the reflow, the girl passed the boards thru' DI wash. Results : white residue on the joints. My questions:
1) from what I know, this white residue is not harm to the product or product reliability, is that right ?
2) what is this white residue material (chemically )?
3) Can Saponifier wash, helps? If not what is the best solution to remedy this white residue.