Electronics Forum | Thu Jul 18 21:04:06 EDT 2002 | davef
So, why can't you clean misprints on Entek boards? Entek: Cheap, flat, OK shelf life, not without process and fabrication issues. Your Entek organic solderability protection is probably Entek Plus [CU106A] made by Ethone OMI. Consider getting a co
Electronics Forum | Thu Jul 18 11:31:03 EDT 2002 | Mark S.
>But since we are a low volume high mix operation I need to account for almost every part used. I'm in the same boat, and we do more changing of feeders than actual placements it seems. What I have done which has improved things a lot is in our MRP
Electronics Forum | Mon Jul 22 18:00:49 EDT 2002 | davef
It doesn't appear to be a proprietary mix. Maybe it's 'neither Alpha Metals nor Kester WILL [want to] supply it.' It's interesting. A lot of the discussion of a solder replacement for 63/37 has centered on high temperature alloys. In real life,
Electronics Forum | Wed Jul 24 04:23:42 EDT 2002 | harisfaisal
Juan, I believe in term of height vs volume, volume is much better control. By the way we used Cyber Sentry 2000 which allows us to measure volume, height and area. My plant normal practice is measuring the height. Last time I did the control limit
Electronics Forum | Wed Jul 24 22:45:54 EDT 2002 | davef
WS609 is a wonderful paste. J-STD-001, 4.2 states words to the effect that for Class 3 products Type H or M fluxes should only be used for tinning operatins. Most water soluable fluxes are either H or M. I believe that you can use Type H or M flux
Electronics Forum | Thu Jul 25 03:01:25 EDT 2002 | martz
We experience e-test failure due to BGA problem. The product was subjected to 40 deg.C hot air blowing on the BGA area and it works pretty well. The product then failed when the temperature became 36 deg. C as the hot air blower is withdrawn. If it
Electronics Forum | Thu Jul 25 14:05:12 EDT 2002 | Bordiky
I've been reading the forum here for a few weeks and found some helpful material from talented individuals. Now, I have a question(s). I'm looking into different alternatives for doing X outs. Right now I'm familiar w/ two of them:1. Bad Board Mar
Electronics Forum | Fri Jul 26 10:35:20 EDT 2002 | jaimebc
Using white labels on xouts works for us. I prefer to used the machine BBR ( Bad board recognition ) when building multiple arrays with no pattern on xouts. We always run xouts last, therefor, we enable the BBR only to finish the arrays with X on it.
Electronics Forum | Mon Jul 29 21:45:13 EDT 2002 | davef
Your board fabricator can tell you how they want you to specify boards that do not have solder on the fiducals on the rails. They probably do not need some BIG stinking drawing change, but can operate from a letter. [And even if you run the change
Electronics Forum | Thu Jul 25 20:47:13 EDT 2002 | Dreamsniper
Thanks for that info... I found out that MPM has UP2000 HiE VP with price lower than DEK Horizon but just a bit higher or let's say relatively the same as DEK ELA...I find it hard to decide which among the 2 based on our budget capability. My budget
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