Electronics Forum | Thu Nov 02 04:42:48 EDT 2023 | tinaheussaff
In general, it is safer to use a single alloy with a known composition and performance characteristics. If you need to change the alloy used in your selective soldering machine bath, it is advisable to consult with the manufacturer or a soldering exp
Electronics Forum | Wed Jun 05 17:13:58 EDT 2002 | Yannick
Hello! I have a strage problem, we made some production with uBGA, BGA, 0201, 0805, and other type of component. We didn't put the uBGA and 0201 and BGA on the board at the end of the line we look a our solder joint and surprise the solder made a
Electronics Forum | Tue Oct 22 20:40:34 EDT 2002 | davef
So, what is this layer made of?
Electronics Forum | Wed Oct 23 07:32:18 EDT 2002 | Yannick
Sorry, the layer is made of flux.
Electronics Forum | Wed Sep 10 09:32:56 EDT 2003 | swagner
Dave F, so what kind of problems would I see if this turned into a problem?
Electronics Forum | Thu Sep 11 09:22:27 EDT 2003 | swagner
Is there any conceivable way this could cause a tombstoned device?
Electronics Forum | Wed Aug 23 14:59:32 EDT 2006 | bill
I�ve been lurking on the forum for a while so I will take a stab at this, mainly because there is no answer I take it that you have a variety of boards being produced at the same time and are in fixtures so the conveyors don�t need to be adjusted, a
Electronics Forum | Fri Aug 24 12:25:32 EDT 2007 | grics
What about when using noclean and alcohol based fluxes? Could humidity still cause issues?
Electronics Forum | Wed Nov 17 20:11:29 EST 2021 | dwl
is there flux on the board? are you probing a test point or a soldered pad? is the probe hitting the right spot?
Electronics Forum | Mon Sep 23 18:11:10 EDT 2002 | steveb
On an assembly reflowed in air saw the same thing: 0201's with a grainular solder joint, but 0402's and above with perfectly formed joints. Reflow profile all within acceptable tolerances. Reflowing in nitrogen solves this problem, but increases t
