Electronics Forum | Mon Jun 17 21:33:20 EDT 2002 | davef
Ken, Yes, when quality is good, increasing throughput of a bottlenecked resource [lowering costs] is a fine goal. [Wouldn't E Goldratt smile?] In MY real world, quality is not as good as it should be. We have: * Suppliers that do not do as asked.
Electronics Forum | Wed Jun 26 00:49:52 EDT 2002 | ianchan
Steve, I'd second Daan's opinion. BGA profile we use gets a peak of 210deg-C to 223deg-C (but that's using our WS paste unique characteristics) with reflow zone holding time of 45-60sec. We had 6 PBGA and 2 ceramic BGA on a 6 layer PCB. typical p
Electronics Forum | Tue Jul 02 15:50:28 EDT 2002 | blnorman
FIrst, be a doubting Thomas and never trust supplier propaganda sheets, do your own testing. How often do you knead the paste? We have a standing requirement that if the paste printer is idle for 30 minutes, we have a minimum of 4 kneads before pri
Electronics Forum | Tue Jul 09 00:06:34 EDT 2002 | kenbliss
One thing that is a constant in the electronics assembly world is change. What ever you setup now be sure to think about what might change in the not to distant future. My experience says that you want ESD flooring, although cost of course is a nec
Electronics Forum | Tue Jul 16 17:03:31 EDT 2002 | stepheno
I worked for a CM in the GTA here in the GWN. Our buyers would give a techie a pile of "part substitutions" for him to sign off on. He would check out the requests and sign only a very small percentage. Some were radically different parts. I asked
Electronics Forum | Wed Jul 17 09:36:20 EDT 2002 | Rob Fischer
Sounds to me like two different mind sets. Engineers analyze the issue, see a solution and implement it. Buyers get what they can, when they can, and "know" that it isn't an issue, sort of a "they can deal with it" thing. They are also answering t
Electronics Forum | Thu Jul 18 14:58:54 EDT 2002 | mark_susol
Well I'm sure I'm not the only who has this experience but even when things are going really well..you never realize 100% of what the machine says you SHOULD be able to do. So what I look at is the labor start time & stop time of the WO and the tot
Electronics Forum | Wed Jul 31 17:37:46 EDT 2002 | davef
We are not very smart about this. We base our machine PM on manufacturer�s recommendations. In real life, those recommendations are fairly conservative for a new a machine and probably need to be tailored for a more mature machine. The buzzword
Electronics Forum | Mon Aug 19 13:16:15 EDT 2002 | kenbliss
Some things to consider 1. can one operator keep up with manual operations and not slow the line down? If yes, great. If no you will need a way to allow more than one operator access to the next board coming down the line to not create a bottleneck.
Electronics Forum | Sat Aug 24 08:01:28 EDT 2002 | kumarraju
Hi CS Tan, Most customers expecially tend to neglet maintenance of the machine. As in the case of Dek 288 most of the end users have the impression that the 288 is one of the worst machines by Dek. But till today although Dek has discountinued manufa
