Electronics Forum | Mon Oct 29 18:21:43 EST 2001 | slthomas
We recently have received a lot of warped (bowed and/or twisted behond IPC 600 specs.) bare boards (some our fabricator's fault, some ours by design) and I can't help but figure that long term reliability will suffer when building product with them.
Electronics Forum | Fri Oct 22 11:53:53 EDT 2004 | C Lampron
Hi Christina, What would you be basing the yields off of? Is it solder defect, component placement, etc....? I have worked for a flex house for quite a few years. You are right. The Polyimide is very dimentionally unstable. (even more so on humid da
Electronics Forum | Fri Sep 12 09:10:23 EDT 2003 | Norm Morikawa
Around 1989 I had this probelmm with a SMT CCA that would not solder in one area consistently. I had it cross sectioned by the bare board supplier and found that under their metallurgical microscope the thickness of this HASL bare board could not be
Electronics Forum | Tue Oct 13 16:11:44 EDT 2009 | mikesewell
Not sure how many inspections need to be done at 15 - 20sec total per board, but you may need to install multiple SPIs/AOIs to hit your takt time. Mike
Electronics Forum | Thu Aug 24 16:08:18 EDT 2006 | Frank R.
Thanks Bill and Dave for your help, Sorry Dave if I didn't search for information in archives. After wave process we have 2 ICT, 2 AOI machines 4 PVA conformal coating machine that will be use on 3 different lines. The quind of automation I want to
Electronics Forum | Wed Jan 20 08:49:46 EST 2010 | edmaya33
I heard some of the manpower of KY transfer to VI technologies to introduce a new technology, same manner as of KY had. This french owned company post an impressive Inspection machine ( Both AOI and SPI ). Going back to ORBOTECH P36+, is there any
Electronics Forum | Tue Jul 09 15:20:19 EDT 2002 | pjc
When you look at the capabilities of Combo machines they tend to sacrifice performance when compared to separate X-ray and AOI machines, meaning they don't do either the X-ray or AOI operations as well as a machine that was designed to do only one. A
Electronics Forum | Mon May 05 22:24:17 EDT 2003 | jlipton
We are investigating a system, using 2-D matrix code, that will identify and track every PCB throughout our factory, starting from bare board. As a low-medium volume manufacturer, would labels or laser marking be more cost-effective? How difficult is
Electronics Forum | Wed Jan 12 13:42:19 EST 2011 | dwonch
Hi All, I'm hoping there is a PCB expert or two hanging around. We're having some solderability issue on our boards. The finish is ENIG but it doesn't seem to be related to the finish process itself. We did SEM and EDX analysis and found aluminum an
Electronics Forum | Thu Apr 07 20:42:19 EDT 2022 | stephendo
The boards were just a little larger than a SOT8. IIRC we had a pizza slicer type depanelizer and it wasn't too bad. We just did enough to populate the bare PCBs we had. Where I am now a customer has us put a QFP and a few other parts on a SOW28 f
