Electronics Forum | Thu Apr 30 12:59:16 EDT 2009 | realchunks
I have run design of experiments on screen printers and most times people forget about the type of board you are running; the condition of the board; manufacturer of the paste as I have seen Type 4 no-clean no-lead pastes react very differently using
Electronics Forum | Thu Apr 23 00:27:06 EDT 2009 | josephkhiew
25% void (total pcba inspected is 15 boards, each board has 2 BGAs and each BGA has 64 balls). Referring IPC-7095 stated that there is no evidence or empirical data that indicates that voids within ball will cause failure. We would appreciate if y
Electronics Forum | Fri May 01 06:49:31 EDT 2009 | davef
minimum space between selective wave soldering pallet's opening to the nearest PTH or SMT pad? * http://www.agicorp.com/pdf_files/Designguidelines903.pdf * http://www.datumdynamics.com/resources/dfm_wavesolder.html?PHPSESSID=a73b3bc8bbd55519bffbb68
Electronics Forum | Tue Apr 28 09:03:30 EDT 2009 | adamconaway
We have recently purchased a CP643, a CP6 and an IP3 in addition to our older fuji equipment. I am in the process of setting up the line descriptor on the MCS30 and I cannot locate the machine_type #'s for any of these machines. Can anyone help me ou
Electronics Forum | Tue Apr 28 03:05:48 EDT 2009 | nibirta
Hi, we are facing a problem with a cobar solder paste and i need some support here. We have 2 lots of solder paste: one makes solder balls, one no-solder balls. Can you suggest me any analyses that we can performed in order to see the differences bet
Electronics Forum | Wed Apr 29 10:05:05 EDT 2009 | wavemasterlarry
you have to lots of paste. one makes balls, one doesnt. Then why bake parts to over come bad paste? Sounds like the paste maker mixed the formula wrong on the one lot of paste. I used to work at a paste place and a lot of hand mixing is done at t
Electronics Forum | Thu Apr 30 15:30:34 EDT 2009 | boardhouse
From what I was told, more people will die from lead poison. I love the US, everything is a crisis. The number of deaths attributed to lead poison have not been reduced to this date by going ROHS. Me thinks we have all be scammed. Of course I got
Electronics Forum | Fri Oct 30 07:45:11 EDT 2009 | rwyman
Anyone else wonder why this strain isn't referred to by it's country of origin, as others thruout history have been? e.g. Asian flu, Spanish flu, Hong Kong flu. As far as I'm concerned, this one should be referred to as the Mexican flu. I wonder w
Electronics Forum | Thu Apr 30 12:50:07 EDT 2009 | realchunks
Could be board support. Breakaway boards are a little more flimzy than boards without. A bowed board will cause miss placements - again can be overcome with proper supports (depending on the machine) I would bet that the boards with breakaways h
Electronics Forum | Fri May 01 07:22:56 EDT 2009 | kareal
In my project of flip chip PGA production , I found serious delamination in interface of solder mask and first layer copper trace of substrate after UHAST 96hrs( 130C, 85%RH) reliability test. The delamination are always around one type solder bump,
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