Electronics Forum | Thu Apr 17 16:43:09 EDT 2003 | davef
Background: * Bulwith, Ronald A., �Failure Analysis of Solder Joints�, �Insulation/Circuits� magazine, February 1978 * Banks, Donald R., et al., �The Effects of Solder Joint Voiding on Plastic Ball Grid Array Reliability�, Proceedings of the Technica
Electronics Forum | Tue Sep 14 16:23:54 EDT 2004 | dan
What is your cure time for the mask?
Electronics Forum | Wed Apr 04 18:27:53 EDT 2007 | Guest
Most CSPs are BGAs. Some are sent without bumps or balls. Thjos eneed to be bumped prior to processing for best results
Electronics Forum | Sat Nov 03 09:39:27 EDT 2007 | davef
Flux exhaused or CSP never came to peak temperature * BGA balls don't combine with the solder => Flux exhaused or BGA balls never came to peak temperature * 0402 surface looks like many tin balls piled together => Flux exhaused Start your thermal
Electronics Forum | Mon Aug 14 12:06:18 EDT 2023 | calebcsmt
Please elaborate, as I have already tried to rule out printer setup. 0 contact of course, ive tried a multitude of pressures, separation speeds, cleaning frequency. Moreover, i use these settings for similar stencils and have absolutely no issue
Electronics Forum | Thu Mar 16 09:01:28 EST 2000 | Ashok Dhawan
I am looking for suggestions on " How to remove solder Balls". We have some designs and tools where nothing can be done economically except to remove the solder balls manually. We are using "Probe" picks to do that job. Anyone who can suggest a bet
Electronics Forum | Mon Aug 04 14:17:18 EDT 2008 | grics
Patrick, you are right. I am sorry. It is a Water based flux. (We have another no clean flux indium 3592 that is used in our leaded process. It is alcohol based and had their base confused) Chunks, yes, this has always been a problem. If ther
Electronics Forum | Tue Aug 22 03:04:07 EDT 2006 | PP
Any help/suggestion is much appreciated I am doing lots of BGA Reworks from a small uBGA with a few balls to a large BGA with over 1500 balls. The reworks have been done on SRT 1100 Series Machine for many years. SRT 1100 Machine is good for the c
Electronics Forum | Mon Oct 11 13:05:51 EDT 1999 | Dave F
| | Folk's, | | | | I'm just tying up some loose end's on my Master's Thesis on solderballing @ wave soldering and the effect the topography of the mask / PCB has on it. | | I was wanting to do a straw poll on you guy's as to the type of resist's yo
Electronics Forum | Wed Aug 06 04:11:56 EDT 2008 | chrispy1963
GR@ICS, can you be more specific about your up in the Ersa machine please? Nozzle size, pump rate (%), and is your machine equipped with monitors on the solder pots? We have the same machine it sounds like, however we run Pb-Free in both pots. I
