Electronics Forum | Fri Jun 12 11:15:50 EDT 1998 | Ryan Jennens
Hey all! The wave solder warrior is back. I have found a flux which leave almost no residue (the least yet), but because of its super low solids content I absolutely cannot get topside fillets. The multi-layer, two sided board is on a pallet w
Electronics Forum | Wed May 27 09:56:39 EDT 1998 | Chrys
| | | We recently made the switch to no-clean and the wurface mount is turning out beautifully. However, the wave solder process continues to put up a fight; we are getting a white residue on the surface of the PCB. The residue is not localize
Electronics Forum | Wed May 27 15:09:30 EDT 1998 | Dave F
| | | | We recently made the switch to no-clean and the wurface mount is turning out beautifully. However, the wave solder process continues to put up a fight; we are getting a white residue on the surface of the PCB. The residue is not locali
Electronics Forum | Wed May 20 08:58:59 EDT 1998 | Dave F
| I pretty much have my old DI water problems solved, | but now (of course)I have new problems: | I was monitoring the degradation of water quality to | see how long it would take to get down to 2.05 Megohms | (is this too high to change the tanks?-
Electronics Forum | Thu Aug 09 23:11:23 EDT 2001 | davef
Cheery disposition??? Would a few ;-) ;-) ;-) help? [Oh and look who is talking, the one planning the Mickie D gig after the traces on the this board start vaporizing with the fuseable link schtik.] Are you sure you're getting flux all the way up
Electronics Forum | Thu Aug 16 10:49:35 EDT 2001 | JohnW
Dave, we try and keep the temperture that a BGA is exposed to at wave solder below 150 deg C. At this temperature it's unlikely that you'll get near to starting secondary reflow of the device or that you'll grow any significant amount of intermetall
Electronics Forum | Fri Aug 17 12:03:46 EDT 2001 | davef
We knew they�d make you use those boards, didn�t we? Your boss could be correct, but then again, you might get away with baking. Entek coating thickness is often poorly controlled by fabricators. But if sample boards that you ran are OK, why not g
Electronics Forum | Wed Aug 22 05:39:35 EDT 2001 | mugen
For appetitizers, Cheers everyone for respective reply... For mains, everyone get this straight, we wanted technical ref to why NC is, the more common choice of BGA mounting, and not helluv bunch of wordy opinions..... Can someone pls ref some tech
Electronics Forum | Thu Aug 23 16:10:29 EDT 2001 | slthomas
Standard ESD bags aren't a vapor barrier, though, are they? Maybe you can get them spec'd that way, I dunno. You might have to get poly/foil bags and heat seal 'em. Fill 'em with nitrogen first, then suck most of it back out just for insurance. Don
Electronics Forum | Fri Aug 24 15:04:12 EDT 2001 | Hussman
Hmmm.... We use our placement data from our placement machines. Gives us nuber of placements, yield of good placements and a ton of other stuff that makes our QC peoples eyes get very very big! We use Panasonic equipment ond utilize the Pana-Pro s
