Electronics Forum | Tue Jun 15 11:08:02 EDT 2004 | russ
Well take away the easy answers! How are the parts falling off? Is the joint breaking the termination on the part or is it breaking at the solder to termination interface? Also, how long are these parts in liquidous state? and what type of paste a
Electronics Forum | Tue Jul 27 07:18:44 EDT 2004 | Nippy
How does the HASL finish and stencil match ? I have seen ocasions on fine pitch devices where the HASL can protrude into the stencil aperture either pulling paste down on the snap off or completely blocking the aperture and getting no paste.
Electronics Forum | Thu Aug 05 21:20:40 EDT 2004 | davef
The entrapped moisture WILL escape. You just want to assure it is not through your PTH and via. Hopefully your board is constructed such that the alternate escape path for the moisture does not delaminate the board.