Electronics Forum | Fri May 18 11:58:47 EDT 2007 | ed_faranda
We're starting to get into BGAs at my company. I have worked with BGA with another company, but that was nearly 10 years ago now. One thing I haven't found is the required clearance around BGA components. Is there a standard for this distance? Wha
Electronics Forum | Wed Jun 27 09:05:18 EDT 2007 | jdumont
Agreed, try slowing the ramp rate down and possibly increasing bottom side temp to 170 if you have that ability. If youre using a hairdryer, youre screwed. Sometimes the 4 degrees C/sec is too fast especially with the FR-4 boardered BGAs.
Electronics Forum | Wed Jun 27 10:44:09 EDT 2007 | bjrap3
What would a good ramp rate be. I am running from 205-217C in 17 seconds. My reflow is 217-235 for 68 seconds. The bottom preheaters are set at 200C and the nozzle is 2075 & 295 for each process respectively.
Electronics Forum | Wed Jun 27 12:52:53 EDT 2007 | bjrap3
Ok. I am running at a little less than a degree per second. Do you happen to have any more information on what I am experiencing.
Electronics Forum | Wed Aug 01 12:23:21 EDT 2007 | stepheniii
Don't forget rework, post production eco's and other mods. Also if it's on a generic base, how do you spot slight misplacments? Board shops have some fallout, now the fallout with be with the assembly makers and with components trapped on the subst
Electronics Forum | Mon Aug 13 10:39:35 EDT 2007 | dphilbrick
If you can not find the source of cotamination then apply masking to fingers until you do find source, single layer of Kapton tape or similar should not affect print thichness. This will eliminate scrap / rework in the mean time.
Electronics Forum | Sat Sep 01 00:08:06 EDT 2007 | goram
This tornado infra is totaly crap-shit what de hell you doing here by this silly thing if you dont know what Rework Stations is, I prefer to keep this -Tornado- the silly rotten piece of banana away from here. Goram
Electronics Forum | Wed Sep 05 08:00:37 EDT 2007 | davef
We agree with Doug. Your board needs to be designed with the QFP at a 45* to the wave with scavanger pads in order to wave solder it. Otherwise if you wave solder it, you will need to hire an additional rework person.
Electronics Forum | Tue Nov 27 20:51:18 EST 2007 | chs
Anyone can share experience on package crack for QFN package. This package is so sensitive to any external force. Any good recomendation on desoldering / rework procedure.
Electronics Forum | Wed Nov 28 07:12:27 EST 2007 | aj
Hi all, Anyone use the above mentioned machine ? I would appreciate some feedback on how they find them to use ? aj...
A US manufacturer of quality hand tools for those engaged in the repair, rework, R & D, testing, and assembly of electronic components and printed circuit boards from Through Hole to 2Mil Pitch Surface Mount.
98 Elm St.
Portland, ME USA
Phone: 1-207-775-6139
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