Order by: Relevancy | Date
Jan 1, 2020 | Solder ball attached on solder joint without violation minimum electrical clearance is acceptable. I
Dec 31, 2019 | Yes, from the picture, it seems the gap between solder pad is very small, easy to have solder ball/s
Dec 31, 2019 | From the picture, I cannot see clearly solder ball violate electrical clearance or cause a short, ma
Dec 31, 2019 | Do you have clear pictures show IC soldering and the solder ball? DO you have clear picture show the
Nov 14, 2019 | yes, first of all you need confirm if solder ball around solder pad has same location, if so then ch
Nov 12, 2019 |
Aug 14, 2018 | Try something drastic just for testing - turn off cleaning! Then check again the result. Trust me, y
May 4, 2018 | For best / most accurate results, I would imagine you will need some automatic solder wire feeding s
May 4, 2018 |
May 3, 2018 | Bob Willis (was the first I knew of) that has a splatter test that can be performed over a ceramic h
May 3, 2018 | Our customer is asking for a solder ball dispersion test on our string solder for rework. The do not
Jun 24, 2017 |
Mar 2, 2015 | Hi We are using Universal carrier for a 2 sided PCB, where the bottom side goes for hand solder
Jul 8, 2014 |
May 21, 2013 |
May 20, 2013 | What is the effect of Ni in SAC Solder Ball?
May 15, 2013 |
Aug 8, 2011 | I thought there was a link for test labs somewhere on the site, but didn't see it in a quick look.
Aug 5, 2011 | Does anyone know of a vendor able to perform ball shear testing services per JES stds? Thanks!
Apr 30, 2009 | sorry. i forgot to mention. we have now two cases! one with two different lots of solder paste and o
Apr 29, 2009 | Commonly when we see solder balling, we think "too much paste." As a result, we pinch the apertures
Apr 29, 2009 | already did this test. No solder balls. i have printed the pads without the component. No solder bal
Apr 28, 2009 | Confirm the source of the issue. Run a coalescence test on both lots of paste. A simple coalescen
Apr 28, 2009 | Hi, we are facing a problem with a cobar solder paste and i need some support here. We have 2 lots o
Mar 31, 2009 | Solder ball formation can be a significant problem if the balls get trapped in the smaller spaces be
Mar 31, 2009 | depending on what is diameter of your balls ;) and smallest electrical distance on the boards (IC l
Mar 30, 2009 | What risk I have if I left solder balls on some pcb?
Jan 7, 2009 | Recently on one of my assemblies(sn/pb) I started seeing leaded BGA failure at functinal test for op
Jul 17, 2008 |
Jul 17, 2008 | I would say the balls are aminly on passive parts in the middle.
Jul 15, 2008 | Can you describe your solder balls...mid-chip solder balls, "splatter" around pads, etc.?
Jan 15, 2008 |
Jan 15, 2008 | We did numerous testing some years ago on matte, gloss and semigloss and found after chemical extrac
Oct 26, 2004 | When we first got into BGAs on ENIG we were getting joint cracking at in-circuit test. The joints w
Oct 25, 2004 | First, any results of pull or shear tests are unscientific at best. [We pop our BGA from boards wit
Sep 14, 2004 |
Sep 8, 2004 | Knock off some balls and you may find it has a flat bottom to it were it has mechanically stuck to t
Jul 6, 2004 | We have now switched to Kester EP256. During our solder paste evaluation, resistance to humidity wa
Jul 4, 2004 |
Jul 3, 2004 | So did you change the solder paste? And did it work? What solder paste is it?
Jun 24, 2004 | There are many factors that can lead to solder balls. Since you have just recently seen this start
May 6, 2004 | Modify your stencil aperture shape...reduce the solder paste deposited on pad,will reduce the solder
Nov 19, 2003 | We are looking for recommendations on reliability testing (thermal cycling, vibration, etc.) of BGAs
Jan 2, 2003 | Cleanliness test � �Area Grid Arrays�. Evaluation of residues� resistivity in a specific location
Jun 4, 2002 | Solder balls are one of the most popular topics here on SMTnet. Search the fine SMTnet Archives for
May 17, 2002 | I recall a couple of papers in the SMTA 'Knowledgebase' that used ball shearing and an element in a
May 17, 2002 | I was wondering if anyone could direct me towards documentation on shear test methods/apparatus to t
Apr 19, 2002 | If the solder balls are next to your discretes, you should consider a homeplate design on you stenci
Apr 15, 2002 | Search the fine SMTnet Archives to get started, until the Solder Ball Troops arrive.