Electronics Forum | Thu Dec 23 15:29:48 EST 1999 | Glen Robertson
Mike - I'm not in the EMS business, but I suspect most of them are very reluctant to reveal much about their quoting process. You might want to try some of the third-party data suppliers like Ceeris (www.ceeris.com), and you can also check the C
Electronics Forum | Tue Dec 28 09:36:34 EST 1999 | Dan Woodward
Certainly automatic placement, preferably with vision system assistance will yield a more repeatable process. Process repeatability (paste deposition, connector placement, reflow cycle, etc.) will be your key to success here. Another possibility yo
Electronics Forum | Tue Dec 21 19:48:27 EST 1999 | Russ
John, we have waved 0603 packages for a long time, We have also started on 0402. Are you concerned with shorting across the component body or to other components? You should have no problems with these parts in a wave process. A couple of things
Electronics Forum | Tue Dec 21 04:01:46 EST 1999 | Hany A. Salam
hello there : Does anyone know the techniques used for troublshooting or repairing the computer RAM modules (DIMM,s). We have a little equipment called simCHECK and it is not always able to locate the problem or the defective part. Do the DIMM desi
Electronics Forum | Tue Dec 28 15:35:21 EST 1999 | Mike Naddra
Edmund, An 0603 component should not fall from the board durring an inverted reflow pass, provided that: Your land geometries are correct for the package type (Start with SM 782 guidlines)- as surface tension of the liquidous solder is what holds
Electronics Forum | Sat Dec 04 09:33:18 EST 1999 | Christopher Lampron
Hello Russ, I believe that the dullness in color of the solder joint is related to the gold finish on the pads. I have had done alot of thru hole soldering of gold pins as well as SMT on gold finish and have seen the condition that you are talking a
Electronics Forum | Tue Dec 07 21:28:00 EST 1999 | sosina outry
I had read all three reply to the interval of pcb in the reflow process already. Like Wolfgang said, base on the profiling and the temp that you set in there. The interval will be base on that temp. Some might have a gap of one pcb lenght, some mig
Electronics Forum | Wed Dec 08 17:58:44 EST 1999 | Dave F
Dave: You should see a solder smudge on the gold plating where the ball was attached, if there is (was) solder reflow during either the (1) BGA fabrication, (2) your BGA attach, and / or (3) your BGA removal. You rework will not remove the solder
Electronics Forum | Tue Dec 07 22:13:43 EST 1999 | sin
Like Wolfgang said, the breakaway tab is just another bar added to the edge of the pcb. This breakaway tab can be added by the FAB house in addition of extra cost...You can write DFM for your customer to see if they will pay for the cost or not...if
Electronics Forum | Thu Dec 02 10:32:47 EST 1999 | Boca
Curtis, They have a 'permalex' coating bonded to the metal. We see no signs of flaking. They are pricey but they do work, we had metal blades from the OEM, they were absolute trash (not MPM). We run 16-6 and they last at least 4 to six months in
