Hello Everyone,
Our board supplier changed our board surface finish on a prototype to flat solderable tin (FST) because of the PWB thickness (.125"). The pads seem to be contaminated, particularly on second side pass through reflow. The solder appears to draw into the center of the pads. Has anyone any experience with this? I was wondering if our screen cleaner was affecting the process. It seems to leave a greasy film on the screen, but the instructions don't require a water rinse. Thanks in advance...
Vladimir
2017/2/4 9:41:47
Interesting and useful!
info
2017/2/4 9:41:47
It answered all my puzzles.Very helpful.
yourname
2017/2/4 9:41:47
I am happy that you shared this helpful information with us.Please keep us up to date like this.
henrik.svensk
2017/2/4 9:41:47
Really appreciate your content. It quite benefits my learning and it has solved my puzzles completely. Thanks.