Electronics Forum | Wed Nov 04 02:53:53 EST 1998 | Earl Moon
| Micheal, | | What does your profile look like for the wave? What profile does your flux say you need? My guess is it is not your profile, our testing with solder balls found that the mask on the boards was the largest contributor to solder balls
Electronics Forum | Wed Sep 02 08:52:13 EDT 1998 | Justin Medernach
| | We are experiencing shorting on a BGA. The part has a 1mm pitch with a 196 I/O count. The problem seems to pop up without warning & disappear in the same manner. | | Our pad design is .020" diameter pads with .025" solder resist diameter. Th
Electronics Forum | Mon Apr 13 16:37:26 EDT 1998 | Steve Gregory
| Wondering if anyone has information on percentage of components that we | can expect to "lose" during our SMT process. We are new to SMT, using | QUAD machines and feel we are losing to many parts during our process. | We are spending a lot of tou
Electronics Forum | Fri Apr 10 20:35:59 EDT 1998 | Steve Gregory
| | We are having a bridging problem with SOIC 14,16 and 20 pin devices during flow solder of the bottom side of our boards. This bridging occurs about half way up the lead between the board and the body of the IC. The chip parts are no problem. T
Electronics Forum | Mon Apr 13 08:42:32 EDT 1998 | Bob Silveri
| | | | We are having a bridging problem with SOIC 14,16 and 20 pin devices during flow solder of the bottom side of our boards. This bridging occurs about half way up the lead between the board and the body of the IC. The chip parts are no proble
Electronics Forum | Tue Aug 28 13:08:28 EDT 2001 | seand
Hello Everyone, Mountains and mountains of data in the archives. As a contractor the variables in your production lots don't help I'm sure. On a larger scale, one suggestion maybe to first look at when and where your tomb stoning is occuring. 1
Electronics Forum | Mon Sep 23 12:37:56 EDT 2002 | genny
OK, back into the fray after being silent for several days. Yes maybe I was a little cranky. Sorry about that. However, I was starting from scratch, I knew nothing. I was nowhere near the point of evaluating whether XYZ machine was better than 12
Electronics Forum | Thu Sep 19 11:14:45 EDT 2002 | Jim M.
We had lots of problems with bridging on 15.8mm pitch, QFP17-160 at the start.The board was .032 thick, double sided-six boards to a panel. Here is the problems (not neccessarily in the biggest to little but as i remember them) and solutions that he
Electronics Forum | Thu Sep 19 21:46:01 EDT 2002 | scottefiske
In the past year I was responsible for developing and leading a Team focused on AOI, Evaluation, Justification, and with a full ROI required, supporting a HMLV manufacturing environment. If you have in these economic times the additional resources t
Electronics Forum | Tue Sep 16 19:16:11 EDT 2008 | hegemon
Hello everyone! > > I'm a student of electrical > engineering currently working on a thesis for my > BSc degree. It will be about post reflow AOIs and > AXIs, and I'd kindly like to ask you for some > help with it. > > I would like to know if t
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