Electronics Forum | Thu Jun 04 09:25:21 EDT 1998 | Chrys
| | | Hello: | | | BACKGROUD: SMT components soldered on the top-side of boards that also require wave soldering have the potential to reflow during wave soldering. Reflowing these components during wave soldering is not good. It can cause cold jo
Electronics Forum | Thu Aug 08 16:41:18 EDT 2002 | davef
On our last thing like that [5X5, 32, er 28?], we printed bumps on the QFN, but you can't do that, so there's no sense in tormenting you. Ideas that come to mind are: * Search around SMTnet for a paper by Chrys Shea on controlling dispense shots as
Electronics Forum | Tue Oct 07 08:59:33 EDT 2003 | caldon
Will Philadelphia Work? My SMTA colleagues and I are putting together a Q/A. We will be having a panel discussion on Lead free on Oct 29. The panel is made up of industry leaders. Aim Solder- David Suraski, Cookson/Alpha/Electronic Assembly Materials
Electronics Forum | Thu Jun 29 09:29:46 EDT 2000 | JAX
sree, You might want to check the archives. If not, I found this just a few questions below yours!! [Back to thread listing at top] Posted by Igmar on June 22, 2000 at 10:27:26 AM EST Can someone please help with the aperture size on a Micro BGA st
Electronics Forum | Wed Jun 03 21:40:38 EDT 1998 | Dave F
| | Hello: | | BACKGROUD: SMT components soldered on the top-side of boards that also require wave soldering have the potential to reflow during wave soldering. Reflowing these components during wave soldering is not good. It can cause cold joints
Electronics Forum | Fri Oct 09 14:35:58 EDT 1998 | Chrys
| Does anyone out there have hands on experience of selective soldering. Either masking or miniwave type. I am looking for pointers with regard to equipment selection and known process problems/ limitations | Charles, I've used both miniwave and s
Electronics Forum | Tue Nov 09 17:26:13 EST 1999 | Dave F
Horace: You weren't real specific about the set-up of the two machines. So what's the diff man?? Big dross generators are: 1 R Woodgate says that pump speed is the biggest driver to dross production 2 Chrys uses low dross cast bar: Alpha HiFlo 3
Electronics Forum | Thu Jun 22 11:21:59 EDT 2000 | Chrys Shea
My personal opinion: Use 20 mil squares with the corners radiused at 5 mils. The squares offer 2 benefits: 1) A little more paste, which makes for a higher diameter solder column that is more reliable 2) Better stencil release of the paste. It's e
Electronics Forum | Thu May 13 16:16:33 EDT 1999 | Chrys Shea
Hi Guys, I am going to be graced with the good luck of processing microBGA's in the near future. A bit of a step forward from printing 20-mil pitch and wave soldering 0805's, wouldn't you say? So, any of you folks who have already experienced this
Electronics Forum | Tue May 26 16:35:53 EDT 1998 | Ryan Jennens
| | We recently made the switch to no-clean and the wurface mount is turning out beautifully. However, the wave solder process continues to put up a fight; we are getting a white residue on the surface of the PCB. The residue is not localized
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