Electronics Forum | Tue Feb 22 17:57:32 EST 2005 | Austinj
Most solder paste has a shelf life of 1 week at room temperature after opened, if resealed at the end of the shift/day. Most shelf lives are 4-6 months at 40F (refridgerated) or 1 month at room temp (unopened/sealed). Recommended stencil life is appr
Electronics Forum | Thu Mar 03 08:42:07 EST 2005 | cyber_wolf
I just ran into a reflow profiling problem with a new assembly that we are processing in SMT. There is a cluster of six or so electrolytic caps that measure approx. .710" wide by .660" tall. They are spaced .100" or so apart. When I run a profile, t
Electronics Forum | Thu Mar 03 16:33:24 EST 2005 | pjc
Revision D has over 730 new and updated illustrations of acceptability criteria and has been critically reviewed for clarity and accuracy. The document synchronizes to the requirements expressed in other industry consensus documents and is used with
Electronics Forum | Thu Mar 03 12:55:31 EST 2005 | dru_wells
We seek the following. Any referrals would be appreciated. Responsible for the complete development of unique feeders that present custom metal stampings and connector products for pickup by industry standard placement machines. The parts will be i
Electronics Forum | Fri Mar 04 11:00:37 EST 2005 | mrduckmann2000
Anybody have any ideas on the proper way to screen solder mask onto a PCB? I am going to cover SMT parts that were soldered to the btm side of the PCB, now I have to mask them in order to run this animal through the wave solder process. I know it w
Electronics Forum | Mon Mar 07 20:27:07 EST 2005 | KEN
Oh silver and its...improved solderability over tin / copper. BS if you ask me. Look to your flux and thermal profile for wetting spread. Ask yourself just how much "wetting spread" do you need to fill a barrel? I have the same 100% barrel fill
Electronics Forum | Sat Mar 12 08:28:01 EST 2005 | Marcus
Fixing your problems needs to be based on hard data. But hard data is difficult to get from humans. They intend to see (and repair) what they e.g. understood best or what is easy to justify. This effect can be eliminated with an AOI. If programmed ri
Electronics Forum | Wed Mar 16 06:17:34 EST 2005 | Grant
Hi, We have this model wave, and spent a few days trying to eliminate residue. We also tried various no clean fluxes, and because we sell PCI cards they need to be clean, and we don't want to deal with a cleaning process. But in the end we gave up
Electronics Forum | Thu Mar 24 19:17:43 EST 2005 | EA
Hi, We are running the automotive product and question was throw to us how do we ensure that our solder joint are good enough after reflow.....and during the sealant process, there's a bit of bend on the nozzle and it toughes the component and custo
Electronics Forum | Tue Mar 29 14:03:25 EST 2005 | Ed Popielarski
Hi, Steve Gregory brought your post to my attention although I'm not a regular participant in SMTNET. I am an independent service provider and still work on the Treiber systems as well as many other process equipment types and brands. I probably hav