Electronics Forum | Wed Aug 30 23:45:23 EDT 2006 | ppcbs
Since BGA's are sensitive to contamination in the plating process, I always do a simple solderability test whenever we receive a new batch of boards. Take a board from the batch, apply no clean flux on the BGA site, then try to tin the pads with a m
Electronics Forum | Wed Aug 30 23:45:40 EDT 2006 | ppcbs
Since BGA's are sensitive to contamination in the plating process, I always do a simple solderability test whenever we receive a new batch of boards. Take a board from the batch, apply no clean flux on the BGA site, then try to tin the pads with a m
Electronics Forum | Wed Sep 06 11:08:09 EDT 2006 | Shep
I'm using an EKRA X5 printer. My QC department has been rejecting boards for "fibers" in solder joints. After investigation, I have determined that the fibers are coming from the stencil cleaner paper. I'm using JNJ Industries p/n 5404EK paper. A
Electronics Forum | Thu Nov 09 15:11:42 EST 2006 | bschreiber
This link will explain the cause of the delamination: http://www.smartsonic.com/ssonicfaq.html#4 You need to shorten the cleaning cycle and lower the temperature. Provide me with your mailing address and I will send you a sample of our 440-R SMT D
Electronics Forum | Tue Jan 09 21:21:22 EST 2007 | behrsam
I am soldering a Germanium Window with a metalized rim to a Ni-Au plated kovar lid. The solder joint needs to be hermetic. I am using 80In solder washer shape preform, but am experiencing lots of voiding when x-rayed, although the joint is sealing.
Electronics Forum | Tue Jan 23 12:22:12 EST 2007 | Grant
Hi, I ran a clean room once, and the humidifiers were built into the exit air ducts, and controlled by a humidity control unit that kept things at 60%. We were loading VHS tapes, and needed to keep humidity at that level or static discharges caused
Electronics Forum | Thu Jan 18 15:28:10 EST 2007 | CK the Flip
If you are, in fact, running a No-Clean solder paste: Different no-clean solder pastes will leave different types of (benign) residues. If your paste has been qualified from a Bellcore/SIR/Electromigration standpoint, any residues remaining will NO
Electronics Forum | Tue Feb 27 13:43:42 EST 2007 | wavemasterlarry
Thanks Russ. Everyone knows that when you clean your wave you wear a dust mask. Well that tells ya the lead is flying around. So same goes fr your oven. Hot solder paste turns into the lead. And like a wave it is very hot. Hot stuff vaporizes l
Electronics Forum | Mon Apr 30 22:41:29 EDT 2007 | davef
Cross: IPC nor anyone else calls out recommended pressures for washers used to clean circuit boards. IPC and the other standards setting folk are in the business of defining the expected results or outputs of processes or acceptance criterion. They
Electronics Forum | Wed Jun 13 08:24:30 EDT 2007 | davef
Most often, when people talk about a dishwasher, here on SMTnet, they're talking about a batch cleaner, not a dishwasher from Sears, or someplace like that. For limited applications, a home use dishwasher will do a perfectly adequate job of cleaning