Electronics Forum | Thu Nov 08 09:51:09 EST 2007 | rgduval
Where are the shorts occurring on the 96 pin connector? Are they consistently in the same areas? It looks as though there are a number of pins connected by traces on the board, and/or the ground plane. This would cause a lot of repeatable shorts i
Electronics Forum | Sun Mar 09 09:15:21 EDT 2008 | davef
Q1. What kind of labels/ink/sharpe can be used under conformal coating without disolving etc...? A1. While we're not familiar with the conformal coat you have selected, this might help. Label selection: The following chemically durable materials are
Electronics Forum | Wed Apr 16 09:02:09 EDT 2008 | tonyamenson
One issue stated incorrectly was that the work order that had no problems, with the same layout and same parts, is a one up at SMT. The problomatic units are two ups. I know the first instinct is to say the profile, but we have run this assembly man
Electronics Forum | Thu Sep 04 09:18:10 EDT 2008 | realchunks
In the REAL world most people don't have time to send out problem boards and wait for someone else to do their work. In the real world most of these problems on this forum are caused by someone doing something dumb, or a change was made that the pos
Electronics Forum | Tue Dec 09 09:46:31 EST 2008 | lazzara55
SMT-ypw: Do you have information about IPC D-35 for reference? B3: The D-35 is a subcommittee responsible for developing industry guidelines on the proper handling, shipping and storage of printed boards and printed board assemblies. Moisture is a ma
Electronics Forum | Sat Mar 21 09:09:40 EDT 2009 | davef
Your puzzlement about blowholes in PTH solder connections during reflow soldering comes from: * Boards are hydroscopic. So, moisture content of the board is uniform. * Gold plating is uniform. * Nickle plating is uniform. * Copper plating on your PTH
Electronics Forum | Sun Sep 13 09:21:26 EDT 2009 | davef
You as, "What data is available showing the long term reliability of the intermetallics of the solder joints?" Alloy||Microstructure Sn-Pb||Lamella or globules Sn-Cu||Sn-matrix, Cu6Sn5 needles or globules Sn-Cu-Sb||Sn-matrix, cuboids of SbSn and Cu6
Electronics Forum | Fri Sep 25 08:09:46 EDT 2009 | markhoch
DudeBro, who peed in your oatmeal this morning? Relax, it's all good. Your anger is what me find it so funny. Excuse me for chiming in. I could've helped, but saw that he already had the information that he needed. As far as my inexperience goes..I'v
Electronics Forum | Sun Oct 11 21:19:51 EDT 2009 | fulldrawmike
we have both flexjet and flexhead, we also have the new inline 7 head on some genesis dual beams we just put into operation. If you have a choice in flexjet heads take the inline 7. The flexjet 09 head is very labor intensive, stay away from them, e
Electronics Forum | Mon Nov 09 15:58:09 EST 2009 | cellis
The biggest thing you will not get is the vision system like this. The 7722 has flying vision for most components and an upward looking vision camera for large components and BGA's. The older Quads had the Quad Align system which is laser vision.
