Electronics Forum | Mon Jul 19 16:56:22 EDT 2004 | exmaintenanceleader
okay, add more flux first and try, pcb surface is not copper already, if more flux helps, than your pcb surface should be ok if not than mehanically cleaning the surface please, (like your car at home 'pol�roz�s-hungaian' I do not know the engli
Electronics Forum | Mon Aug 16 20:22:54 EDT 2004 | Grant
Hi, Thanks for the info! In the software can you add solder paste specs and heat sensitive components and see where the profile sits against these fast? Measurement is the easiest part I think, but what I thinks harder is good software to analyze th
Electronics Forum | Mon Aug 23 14:49:36 EDT 2004 | msjohnston1
I have no experience working with the systems you listed about, however I have experience working with a GSI Lumonics SVS systems measuring solder paste. I am also in the process in looking for new equipment to replace the GSI systems that is capabl
Electronics Forum | Wed Sep 01 16:16:17 EDT 2004 | DenisM
Hi, I have used these type systems in the past and had trouble with white residue and flux removal under low standoff components. All cleaning systems need DI water and this requirement adds another layer of system cost if you don't have DI availabl
Electronics Forum | Fri Sep 17 23:19:07 EDT 2004 | KEN
What is the component ball co-planarity spec? I have encountered many ceramic and ASIC devices that specify 7 mil max. If your stencil is 4, 5, 6 mil you WILL eventually have an open joint. You must deposit solder greater than or equal to your cop
Electronics Forum | Thu Oct 28 05:35:49 EDT 2004 | rlackey
Dave, I think you'll find you'll score higher if you add a cheeky half twist - you'll get a higher difficulty multiplier on your final score. Profiling is highly dependant on the quality of your oven, number of zones, temperature profiling tools et
Electronics Forum | Wed Dec 01 15:07:16 EST 2004 | bdrobinson
Hey all, I am currently looking into switching from using Alcohol in our screen cleaner to Zestron SD301. I am confident that it will clean our stencils better, but the cost of Zestron is 3 times that of alcohol. Has anybody done any studies o
Electronics Forum | Fri Dec 10 11:22:50 EST 2004 | rlackey
Hi, We paid �60K for a 6622C from Vitronics Soltec, no idea about US costs since the dollar went down the swanny. Great machine though. Not all lead free ovens come with Nitrogen capability - it depends whether you specify it or not, and it can ad
Electronics Forum | Thu Dec 16 18:36:01 EST 2004 | mattkehoe
We use water soluble solder paste. When it gets a little dried out, can we add something to rejuvenate it? Liquid flux? We do not place components, just print and reflow the solderpaste so solderballs, spattering, and other issues like those are of
Electronics Forum | Wed Jan 05 18:31:30 EST 2005 | russ
It is possible to re reflow (is that right?) these assemblies. You will probably have to mask off or remove the through hole components if they cannot withstand the reflow temp. I would recommend however, that you utilize a hot air process to ins
