Electronics Forum | Sat Oct 20 00:34:57 EDT 2001 | kenbliss
Hi mike The solution is simple but two fold, first your process needs to be changed a bit, you need additional feeders to pre-stage the new P/N run and prestage the extra feeders for reload as certain higher volume components exhaust. The idea is t
Electronics Forum | Tue Oct 16 03:15:00 EDT 2001 | Michael Trybula
At my previous job I inherited several lines where tweaking of a few components was allowed. The first thing I did was stop that practice. The problem with tweaking a program is that you are fixing the symptom and not the root cause. When the root
Electronics Forum | Fri Oct 26 11:34:44 EDT 2001 | pteerink
Paul, Many variables that affect changeover, here's a few to start with: 1) Feeder count- do you have enough feeders to be able to do a complete setup off-line? Take your product that uses the most amount of feeders, and make sure you have at least
Electronics Forum | Wed Nov 07 17:13:51 EST 2001 | fmonette
Hany, The guidelines for proper handling and storage of moisture sensitive components, like PBGAs are clearly documented in the joint IPC/JEDEC standard J-STD-033 (free download at http://www.jedec.org). In short you need to keep track of exposur
Electronics Forum | Fri Nov 30 17:33:12 EST 2001 | slthomas
After saying for years that we'd never do two-sided assembly, the powers that be are not only saying we will, but they're threatening to throw an out of house design at us...no frame (it's a PCI card with a couple of dinky breakaway tabs), no tooling
Electronics Forum | Sat Dec 01 09:09:24 EST 2001 | davef
Sounds like a perfect place to start. Sure we all have different perceptions of fun, don't we? Trial by fire, eh? ;-) A prediction: Your cost accountants are going to freak when they compare the production costs for this board to the more famili
Electronics Forum | Thu Feb 28 16:40:04 EST 2002 | liviuj
>Dear SMTneter, >>I am loonkig for some information about how to rework a >>BGA. >>Some technical info explaing how to put solder past >>manualy, soldering manualy, tips and so on. >>Where can I find something about? >>Thanks in advance >>Marcos Hi
Electronics Forum | Wed Mar 06 17:15:06 EST 2002 | djarvis
Hmmmm, very good point. I never thought about it much as such dedicated tools were not available when I first kicked off. I'd look at the reflow under a microscope and if I could identify any problems, I'd start to look at the print using the same
Electronics Forum | Wed Apr 24 21:25:46 EDT 2002 | davef
PROPER GROUNDING OF THE "OBJECT" PCBA BOARD: You cannot ground an insulator. Insulators accumulate a charge, but the charge must be neutralized, usually by ionization. We only use ionizers at tape stations and bins where travelers and other paper
Electronics Forum | Wed May 15 13:11:26 EDT 2002 | fmonette
Hi Dason, Yes I was talking about the same paper. This is the best technical information available to clearly explain the physics of moisture diffusion inside a plastic package. Many of the guidelines contained in the current J-STD-033 are derived
