Electronics Forum | Fri Apr 03 08:22:36 EST 1998 | Scott Cook
| At this moment in time we are using water soluble solder paste on our PCBs these are cleaned using water only, agitated with ultrasonics. After drying a white/grey residue is left around solder joints. Reflow profile is fine and a reliable wash pro
Electronics Forum | Mon Mar 30 16:39:04 EST 1998 | Tony Arteaga
Hello there, I am currently doing BGA repair and basically I am applying the same process as Mike sujested. It is actually the way to go when creating a profile. The next process is re-balling your package, that is if you whant to use the same compon
Electronics Forum | Tue Jan 20 13:33:14 EST 1998 | Justin Medernach
| This is a re-post of my previous message. I typed my Email address wrong in the other message. I am sorry for any inconvenience caused. | Is there anyone who can tell me what is the maximum allowable soldering temperature when soldering a TQFP (Thi
Electronics Forum | Mon Dec 22 18:20:33 EST 1997 | Graham Naisbitt
Brett and Chis, The method I understand to be the most popular is the use of micro-blasting or abrasion. In other words mechanical rather than chemical removal. However, that is only part of the problem - how do you repair the coating? The technique
Electronics Forum | Thu Dec 11 09:57:38 EST 1997 | Alan Brewin
Thanks to Scott for your reply, much appreciated. Are you aware of any new developments in this area? Particularly in respect to the solvents? We are aware that fluorine chemistry is now in-use with amazingly high boiling points. We understand that
Electronics Forum | Tue Aug 28 16:41:42 EDT 2001 | davef
Very few concern themselves about the strength of solder connections, because it doesn�t require much strength to keep a solder connection attached to the board. More important are factors that arise as a result of the different materials properties
Electronics Forum | Wed Sep 19 11:32:17 EDT 2001 | Mike Konrad
Hi Kevin, Sorry for the delay in responding to your question. I have been trapped in Australia (not a bad place to be trapped I may add). The scale in your cleaner is not usually caused by the chemical used in the wash cycle (although Armakleen ha
Electronics Forum | Tue Sep 18 12:05:08 EDT 2001 | jschake
Optimal Print Parameters: I have responded to a similar question in the thread titled �Stencil Printing For 0201 Applications�, posted by markt and will refer you to that for addressing this question. If you seek clarification on any of those point
Electronics Forum | Tue Apr 16 20:55:49 EDT 2002 | lysik
I do think that people should have to pay a registration fee. It costs a lot of money to run a company like Universal. R&D, help dest etc. They deserve to turn a profit. I also think Universal makes great machines. I am probably their biggest fan. So
Electronics Forum | Mon Apr 22 18:40:14 EDT 2002 | Steve Townsend
It's not impossible to balance in a non-repetitive situation. You'll need to investigate mix-model JIT methods. It takes more effort, but it is very possible. First is to figure out which assemblies are going to be the most similiar, which ones use
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