Electronics Forum | Tue Aug 09 13:44:48 EDT 2005 | mtd
The solder on the rest of the board looks good. There are no large components around these parts. We check the profile using a KIC and it met the recommendations of the solder paste manufacturer. I have not did a dip test of the board or components.
Electronics Forum | Wed Aug 24 09:42:23 EDT 2005 | james
That is what I was looking for. The profiles did not make much sense to me. We are getting alot of cold solder joints or bumpy solder joints.
Electronics Forum | Wed Aug 24 10:18:19 EDT 2005 | james
Well that Genius did it on this BGA. It does have a heatsink and absorbs alot of heat. It just stinks because the BGA cost over 1000 and I really can not scrap a board. But that first profile does not look correct for this board with the BGA esp.
Electronics Forum | Fri Aug 26 12:30:20 EDT 2005 | mfoster
Heller did a tall tunnel for a customer in Florida a few years ago for a very similar application. As I recall, it was 3". Marc Peo or Don DeAngelo at Heller shold remember the details.
Electronics Forum | Fri Sep 23 10:34:22 EDT 2005 | Rob
Thanks Base, Yes, we did use the overlap method but we still have problems. Thankfully that product is now obsolete, so until next time.... Cheers, Rob.
Electronics Forum | Thu Oct 27 06:47:12 EDT 2005 | cyber_wolf
Why did you post your E-mail address ? Do you have a source for these safety's ? I just need some confirmation before I go sending out my e-mail address. Thanks.
Electronics Forum | Thu Oct 27 11:45:09 EDT 2005 | Rob
S62-325XM3 from Cobar - we used this for soldering all sorts of battery terminations to pcbs, & did a better job than every other paste we ever tried. The flux is so agressive it sits in the corner growling.
Electronics Forum | Thu Apr 27 03:41:48 EDT 2006 | slaine
I was contemplaiting purchasing a hand held XRF myself but decided they wouldnt be acurate enough for us. But two manufacturers did offer to lend me the units to evaluate them. I would recommend doing this before you buy one. feel free to contact me
Electronics Forum | Mon Oct 31 22:09:16 EST 2005 | KEN
Why did you choose a 6 mil stencil? How do you plan to rework this device (what machine)? What is the heating method?
Electronics Forum | Thu Nov 03 07:22:16 EST 2005 | davef
arnold: I did not say that Sn100 dissolved copper faster. The graph of dissolution rates [from the link above] shows that Sn100 dissolves copper slower than many of the other solders.
