Electronics Forum | Mon Jun 12 13:49:47 EDT 2006 | grantp
Hi, Thanks guys for all the suggestions. I am going to check what options we have for top side heating. Do people recommend we get convection for that? Also, we seem limited to 60% in the machine setup, and does anyone know how to run the top lam
Electronics Forum | Fri Nov 10 17:00:05 EST 2006 | darby
Yep. If speed is not an issue a Heller 1500 will pretty well do you fine unless you are trying to process a brick. A Heller 1700 will not give you any more heated length, so don't get sucked in to that one. However, they are a little more fun to pl
Electronics Forum | Fri Feb 09 15:39:13 EST 2007 | Fat Angry Engineer
That's my exact suspiscion too. This guy is trying to find some type of "scapegoat" for some unknown defect that nobody can figure out. First, he'll try blaming the solder paste, thinking that the CM is too dumb to choose the correct soldering mate
Electronics Forum | Fri Jul 13 12:32:14 EDT 2007 | rgduval
We've experienced this issue with SN100. A couple of things we've tried, all with varying levels of success: 1. Longer pre-heats. We use SN100 in a solder pot, and pre-heat the boards on our wave machine. This did have a positive effect, but I ne
Electronics Forum | Sat Jul 28 08:37:52 EDT 2007 | davef
There is no good choice. Board Finishes: Industrial/Battelle Class 3 Environment [Reliability Knowledge Gaps: For use of Pb-free solders in High Reliability Applications, J Smetana, iNEMI Availability of SnPb-Compatible BGAs Workshop, March 1, 2007,
Electronics Forum | Tue Apr 22 03:46:19 EDT 2008 | fowlerchang
It is CSP reliability issue, which is the mobile CPU from Spreadtrum. All the tests passed and shipped to customer. They assembly them and tested but failed. After they reflow this CSP with hot air gun, some of the boards passed. We got some board
Electronics Forum | Tue May 13 09:58:50 EDT 2008 | rgduval
Thanks, Dave, To the 183 TAL...I was just referencing a previous post I found in the archives. We checked the profile on the board this morning, absed on the temp info that AIM recommended, and found that we're above liquidous for nearly 2 minutes!
Electronics Forum | Fri Oct 10 05:04:26 EDT 2008 | bing007
We are using Mulicore MF101 flux and a Vitronics selective soldering machine on a lead-fee assembly and are having trouble with nozzles blocking even when the nozzle aperture is increased. Has anyone come across this problem before using fluxes with
Electronics Forum | Mon Apr 06 11:58:42 EDT 2009 | c111
Jeong Ju-young You touched them all up with an iron? Wow! We have also had similar issues. What I did to prove there was a board problem was paste one & reflow one bare board with the same chem (noclean) we saw the non-wetting condition. Then applied
Electronics Forum | Thu Jun 14 06:13:47 EDT 2012 | ccgooi
I am running a product with board size ~18"X16". I faced stencil aperture positional accuracy issue which slightly shifted at both end of stencil at positive and negative in X direction thus causing solder paste to pad mis-registration. Due to this s
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