Electronics Forum | Wed Mar 06 06:47:00 EST 2002 | francoiscal
Hello, Does any one as a database regarding component assemble by hand on a PCB. More accuratelly how much time (per sec) does it take to bend leads on a component(res), time to insert the component by hand, time to solder by hand. Any time base dat
Electronics Forum | Wed Mar 13 10:20:51 EST 2002 | IAN T
WE HAVE A PROBLEM WITH SOLDER BALLING POST REFLOW WE ARE RELIABLY DISPENCING HERAEUS PASTE WITH A XY FLEX BUT WE'RE GETTING LARGE BALLS ON THE MELFS AND SMALL BALLS ON MOST CHIP PARTS WHAT SHOULD I BE LOOKING FOR? AND IS PAD DESIGN AN ISSUE (ROUND DO
Electronics Forum | Tue Mar 19 07:48:26 EST 2002 | PeteC
Have QFP at o.5mm pitch with leads too oxidized for the flux in the paste to de-oxidize(in stock for boo koo time). I saw three companies on the Internet that can "tin" (solder coat) the leads. Does anybody have any experience with having this done t
Electronics Forum | Tue Mar 26 19:23:44 EST 2002 | sy_koh
I am looking a stencil cleaner machine. My co. is ISO 14000 certified ans using no-clean process. I am looking at various options. 1) Water cleaned Vs solvent 2) Ultrasonics Vs spraying. I had also the intention to use this machine to wash wavesold
Electronics Forum | Thu Apr 11 11:26:34 EDT 2002 | johnw
Dave, I sand corrected since I know you wouldn't steer me wrong...although the lst time I looked at the IPC spec for a solder profiel it was still designed for older generations of paste and were specifically water wash biased although that doesn't c
Electronics Forum | Tue Apr 09 16:19:37 EDT 2002 | Peter L.
Has anyone built using the ALIVH PCB (0402, 0.8mm pitch uBGA) on the SMT line? I would like to know any process issues (paste printing, p&p, reflow) related to processing this pcb. Specifically, what type of solder paste was used (no clean) and wha
Electronics Forum | Thu Apr 11 10:14:05 EDT 2002 | BTaylor
We use the ASC vision master 212, our customers wanted a height and volume measurement rather than an inspector doing a visual. We have added this machine to our process, checking height on many preprogrammed locations then this generates a X bar and
Electronics Forum | Thu Apr 18 16:54:45 EDT 2002 | cfraser
Currently in our facility we store used and discarded flux residues from the wave solder machines in 50 gallon drums. These drums are picked up and disposed of by an outside contractor. During a recent audit we were cited for not having the drums
Electronics Forum | Sun Apr 21 09:52:07 EDT 2002 | pjc
Francis, The problem with shorter solder lands is you may have a problem getting good heal fillets. In the flash products I built the PCBA was inserted into a plastic shell and then we did an epoxy encapsulation using a Camalot machine. Toshiba, Sams
Electronics Forum | Wed Apr 24 21:27:10 EDT 2002 | davef
50�C. * Boards are too hot to be cleaned. Yes, saponified cleaners will remove heat decomposed WS flux. Well, I suggested changing paste to another poster, because he mentioned overheated solder connections and I guessed that his white residue was
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