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Electronics Forum | Wed Feb 20 10:04:15 EST 2008 | slthomas
Yeah, it blows, but basically we toss it when it quits printing. We've never seen any visible quality issues we could attribute to recycling paste like this so we keep doing it. When we start doing BGA and X-raying stuff we'll take a closer look at w
Electronics Forum | Tue May 13 08:26:29 EDT 2008 | davef
First, on your reflow temperature comment: The 183*C focus for reflow recipes for tin-lead solder is a falicy. If you held a recipe for tin-lead solder at 183*C peak, it would never reflow. Recipes for tin-lead solder need to be at liquidus plus 20*C
Electronics Forum | Tue Jul 15 16:12:23 EDT 2008 | boardhouse
Hi Armynski, I sell for an offshore board house, yes, it is common for offshore board shops to fill vias. The bubble is caused by air entrampment within the hole it self, when heat is applied during Hot air and the via is covered on both sides the e
Electronics Forum | Tue Mar 24 20:25:18 EDT 2009 | davef
It is very common to use low residue flux with low-standoff parts. On the other hand, sure you can clean under low-standoff parts. We've talked about this previously. Search the fine SMTnet Archives to find threads like: http://www.smtnet.com/Forums
Electronics Forum | Wed Aug 26 12:06:44 EDT 2009 | clampron
Good Morning, I have been struggling with this part for some time now. I have to agree that whoever designed this part, did not have to manufacture with it. We have advanced to a point where they have a acceptable yield but I believe that will be hi
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 | Mon Sep 21 01:57:55 EDT 2009 | kaz
Hello All, My first visit here. I own and operate a small Industrial & Consumer Electronics Service Shop. There is more and more modules with high density fine pitch SMDs that we cannot handle. We bought PACE ThermoFlow BGA SMD station with a bunch o
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.
Electronics Forum | Fri Nov 20 08:51:34 EST 2009 | Sean
Hello, This is interesting topic that I would like to share and discuss with you.. I came across few projects from various SMT factories where its product(Computer) reach field, experience No Post/boot defect. This problem become very obvious when
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