Electronics Forum | Fri Jun 29 14:13:05 EDT 2001 | markhoch
Just a quick thought on solder balls "or beads" caused when using NC paste. I found a spec (12.4.10 in IPC-A-610C) that says solder beads are acceptable if they are entrapped in NC flux residue and can not be dislodged in the normal service environme
Electronics Forum | Thu Jun 21 22:42:45 EDT 2001 | davef
We're doing one of those review things for some reason that none of us can remember. We just printed-out the product sheets on a whole pantload of SMT capacitors [rather than use the old moldy ones we have in some file cabinet ... BIG mistake] that
Electronics Forum | Mon Jun 25 10:06:35 EDT 2001 | dave f
are you saying to put a gap in between the board and the stencil? i have been fighting solder balls for a while now. sometimes i can fix them by placement "z" in the machines other times i can't. what should i have my oven profile look like? i have m
Electronics Forum | Mon Jun 25 20:58:07 EDT 2001 | davef
Wolfgang: Is your company going-out of business? What "future is canceled"? What lights are being turned-out and doors being locked? Is there a fat lady tuning-up her vocal cords, too? [If so, sympathy.] Another "Dave F", now that�s something t
Electronics Forum | Fri Jun 22 05:03:29 EDT 2001 | wbu
no - can it be left uncleaned on the board? ---> for many applications yes says our supplier and many companies do ( techi over there) - are our products specified for conditions that we and our customers can live with that? ---> well, at first
Electronics Forum | Mon Jun 25 11:09:26 EDT 2001 | wbu
Who is this, another Dave F ? For me there�s no problem with balling and beading. I know that the boards I have with the new paste do have all what�s needed for balling and beading, just one of the oldest designs with a stencil ...., oh boy, didn�t
Electronics Forum | Mon Jun 25 20:54:28 EDT 2001 | davef
No, I�m suggesting an increase in the distance between the two pads on the board. This "G" in SM-782A "Surface Mount design & Land Pattern Standard" parlance. You shouldn�t fight solder balls for long periods. You should just increase the pressure
Electronics Forum | Sat Jun 23 08:29:04 EDT 2001 | davef
Well, at least I don�t feel so bad that we�re not the only ones going anal on this blankin� cap thing. We�re gunna change process on ever effin wave soldered SMT cap!!! I�m going to off myself!!!! And in about 15 seconds, some doodoo brain is goin
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