Electronics Forum | Mon Apr 21 13:51:59 EDT 2008 | cokedigits
Profiling can't happen outside of North Avenue.
Electronics Forum | Fri Apr 18 11:38:50 EDT 2008 | sueph
I have a small board with some chips and 2 connectors (1 large and 1 small) with gull wing leads. The large connector has some "disturbed" solder joints per my QA people. These joints are toward the ends of the connector, not toward the middle. Th
Electronics Forum | Fri Apr 18 15:38:22 EDT 2008 | ck_the_flip
Do you have a picture? SMTNet HAS the technology now to post pictures. "Disturbed" to the typical Q.E. usually means grainy or dull, or a wrinkly solder appearance. All of this has to do with the "grain structure" of the solder joint. Here's a p
Electronics Forum | Mon Apr 21 11:55:29 EDT 2008 | realchunks
"Disturbed" usually means some form of movement. I would think your leads are moving due to warp as the board exits the reflow zone. Not knowing your profile, I would suggest checking your profile. Make sure you have adequate "above liquidous" and
Electronics Forum | Mon Apr 21 10:59:39 EDT 2008 | davef
That you have 'grainy' solder only at the ends of the connector and not at all solder connections indicates that your quality types are on track and are pointing you in a direction worthy of investigation and developing a better understanding of the
Electronics Forum | Wed Jan 23 17:14:33 EST 2002 | Shawn
We have seen solder joints that have an orange peel or textured appearance to them after running over our wave solder machine. We thought it may be disturbed solder joints but it does not have the lines or appearance that a disturbed joint usually sh
Electronics Forum | Mon May 13 14:29:00 EDT 2002 | cyber_wolf
Why is it disturbing to you ?This fascinates me. My true identity is an SMT process technician with over 11 years of experience in this industry.That should be sufficient for this forum. Why on earth would you need to know what my true name is ? I a
Electronics Forum | Thu Oct 25 08:19:53 EDT 2001 | Dave G
Sounds like somthing disturbed the solder joint while it was @ liquidus. Could the part/leads be moving on the 2cnd pass ?
Electronics Forum | Mon Apr 29 18:54:51 EDT 2002 | John Raposa
It is very disturbing to me that people use screen names on this forum. Could any of you step up to the plate with your true identity? Joe Raposa
Electronics Forum | Tue Aug 06 11:07:37 EDT 2002 | slthomas
OK, I'll bite. How you can set a stencil down on a printed board and run a squeegee across it (even if it's a proflow head, it's still a squeegee, right?) without disturbing the printed paste?
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