Electronics Forum | Tue Jan 30 13:26:07 EST 2007 | realchunks
Several paste manufacturers make an interim paste designed for such mixed applications. They work pretty good and give you the strongest joint available.
Electronics Forum | Fri Feb 02 13:27:59 EST 2007 | jdengler
Daxman, Make sure the clutches engage the nozzle holders properly. Sometimes the holders do not slip into the recess of new clutches as easily as they should. Jerry
Electronics Forum | Tue Feb 13 12:37:53 EST 2007 | slthomas
Are you referring to a feeder or just a platform to place trays on? I'm looking at a used Topaz purchase right now and am trying to make sure I understand the language. Have you tried any of the refurb houses for this stuff?
Electronics Forum | Thu Feb 08 14:15:45 EST 2007 | dwelch
Dave, I had the same problem in the past. Use fresh paste and a slightly higher profile. My guess is that you may not be completly reflowing. It worked for me. If that doesn't work you may want to check the bga itself, make sure balls are universal.
Electronics Forum | Fri Feb 09 08:45:31 EST 2007 | russ
Most likely either profile or I was thinking a cap! resistors are to thin to make the part stand up hehehe just a joke. Do not follow the advice of weighting part, that is ridiculous, poster of that, if you have never done BGA before please do not
Electronics Forum | Sun Feb 11 08:10:10 EST 2007 | davef
You're correct. So, you're thinking about putting the PTH parts on the same side as the SOIC LED, making the top into the bottom, right?
Electronics Forum | Fri Mar 02 12:54:46 EST 2007 | oldsmtdude
They do make smt leds that mount topside over a hole and shine down ya know. Then just kapton tape the holes and wave it.
Electronics Forum | Mon Mar 12 07:54:52 EDT 2007 | Rob
Rohm make them & call them Backfires: http://www.rohm.com/products/databook/led/pdf/sml-812.pdf The only problem is on some applications you may have to use light pipes.
Electronics Forum | Wed Feb 14 02:38:13 EST 2007 | Wayne
The middle of the BGA has to make sure it has 235 deg C (if you are using SAC paste), otherwise it will not form good joint.
Electronics Forum | Wed Mar 07 04:01:23 EST 2007 | AR
Hi all Everybody seems to be touting the fast changeover capabilities of the Mydata machines. What is it exactly that makes Mydatas so great in this (very important) area, above other brands? I am not attempting to play down the Mydata, I am just ge
