Electronics Forum | Wed May 30 18:34:08 EDT 2007 | russ
make your silkscreen accurate and you do not need vision vision is the reason for the high cost of this equipment. A part like you mention can easily be done with a temp controlled heat gun and a fixed height stand (about 300 dollars total)to hold t
Electronics Forum | Mon Aug 04 08:33:45 EDT 2014 | emeto
I worked with a few BGA rework stations and also had the chance to see several demos on different brands. THe good ones that can really do it are equipped with camera, infrared under the board, different nozzles and a hot air comming from the head(di
Electronics Forum | Tue Aug 05 11:32:53 EDT 2014 | hegemon
SFC and PhilC To answer one open question, and I too have difficulty with little stencils and preforms..... If you can manage, try dipping your balls in paste. It adds the right amount of flux and a bit of metal as well. We have a nice Rework Stat
Electronics Forum | Mon Jul 26 18:03:45 EDT 1999 | John Thorup
| We only do rework with SMT components or a small amount of SMT work. We are having a hard time keeping the components safe throughout the handling process of removing one or two components, and issuing them to an operator for processing or inspect
Electronics Forum | Thu Aug 27 05:06:35 EDT 1998 | John Kirby
Could someone please help me. We clean our PCB's with Safewash at present. As most of our work has to be upto MIL-STD, we cannot clean the PCB when transformers are fitted? Could someone please help???? Thank you J Kirby
Electronics Forum | Mon Sep 24 20:38:27 EDT 2001 | davef
Mike's comments are well taken. Your technique works fine with BGA, but uBGA are less forgiving. Again, let's take about: * Specifics of the problem. * Amount and method of applying flux. * What's holding the uBGA in-place before the solder ball an
Electronics Forum | Tue Sep 25 09:57:40 EDT 2001 | nwyatt
In regards to your last question, - problem is failures and most think it is due to too much flux - we apply flux with a brush - amount applied depends on the operator applying it - the flux is very thick and will hold the part in place before reflo
Electronics Forum | Fri Sep 28 16:51:41 EDT 2001 | pcmarch
I have had success by applying the paste flux with my finger, using a finger cot and spreading it on the PCB. This seems to put it on more consistently than using a brush.
Electronics Forum | Wed Feb 06 20:08:24 EST 2002 | dason_c
Francois/Sleech, thank you very much for your information, by the way where I can get the copy of the paper, what is LTVP stand for and what is the drying requirement expected ie less than 5%? I am also trying to run my evaluation to dry the parts a
Electronics Forum | Tue Apr 23 16:46:14 EDT 2002 | retronix
I would sugest the lowere the baking temperature the better, the main cause of popcorning is the water expansion and this is greatest as the water boils, 100 degrees, better to elongate the time. Matt
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