Electronics Forum | Thu Jun 13 06:08:57 EDT 2002 | edahi
guys thanks for the suggestions... DaveF, *Changing paste EricD: Yes we are considering that as a point. Because I believe the paste we are using are in syringe packaged and designed for dispensing. We are using an Indium SMQ75 paste and current
Electronics Forum | Thu Jun 20 08:59:57 EDT 2002 | John Burris
I agree with some of the earier postings about checking other mfgs. Assembleon and Juki are really two different price point companies. Assembleon is more in line with the Panasonics and Siemens of the world, Juki and Samsung might be a better focus
Electronics Forum | Fri Jun 21 10:22:13 EDT 2002 | russ
A lot of your success with waving SMT components is dependent upon design and what type of wave forms you use. Without knowing how the board is laid out or what type of wave you have it is pretty difficult to determine what the yield differences wil
Electronics Forum | Thu Jul 18 09:55:05 EDT 2002 | gdstanton
Mike, When we measure solder inspection yield by dividing the number of defective joints on a CCA by the total number of joints on the PWB. A defective joint is classified only once. That is we don't count multiple defects on the same joint. Our
Electronics Forum | Thu Jul 25 14:05:12 EDT 2002 | Bordiky
I've been reading the forum here for a few weeks and found some helpful material from talented individuals. Now, I have a question(s). I'm looking into different alternatives for doing X outs. Right now I'm familiar w/ two of them:1. Bad Board Mar
Electronics Forum | Mon Jul 29 00:02:09 EDT 2002 | fastek
Malcolm- Again, I point out that assembling a notebook is very different than building a sophisticated screen printer. As far as sourcing parts, I'd bet that nothing in an MPM printer is made in China at the moment. So that means MPM will have to
Electronics Forum | Thu Aug 01 12:55:41 EDT 2002 | johnw
we run the paste in both air and n2 depending on customer requirements again it run's fairly well in both. Some people say it's better sme say it doesn't make a bit of difference, I'm somewhere in between at the moment. I definately think there's imp
Electronics Forum | Wed Aug 07 09:05:11 EDT 2002 | davef
N2 PPM vs %RH? With a firm grasp of the obvious, reflow oven manufacturers rig N2 ovens differently than non-N2 ovens. The N2 displaces O2. Usually N2 oven monitor something or other to give an indication of N2 ppm. %RH really isn't part of the eq
Electronics Forum | Mon Aug 12 18:26:05 EDT 2002 | pjc
If you are talking actual placement rate- from first fiducial read of board no. 1 to first fiducial read of board no. 2, here is the best I've ever seen based on the boards I've run: CP3- 141 seconds for 468 components per board (all rectangular chi
Electronics Forum | Tue Aug 13 13:17:39 EDT 2002 | peterson
We are having trouble with some through-hole connectors "shorting out" on a thick backplane. Preliminary research is suggesting that it may be due to excess flux, trapped under the plastic connector shell. I have done a bit of searching in the fine S
