Electronics Forum | Tue Feb 13 06:43:44 EST 2001 | jackofalltrades
We use AOI in-line on most our SMT lines, and still getting them for the rest our lines. It has cut down on Inspection Time considerablly, justifing the cost. They do take a trained technician to program and that is a little time consuming, but worth
Electronics Forum | Mon Feb 19 18:48:59 EST 2001 | davef
For smaller companies, it is difficult to justify the ~$35k cost of products in the class that you sell. On the other side of things, sloshing boards and stencils in a plastic wash pan containing flux thinner is not a good option either. Neither is
Electronics Forum | Tue Feb 20 15:30:23 EST 2001 | kerryn
We have a high-mix, low-volume type shop and clean over 50 stencils per day. The wash and rinse cycles in our aqueous stencil cleaner is ok, but the drying time takes too long (15 - 16 minutes per stencil). You indicate that hot air can damage a
Electronics Forum | Tue Mar 13 12:15:14 EST 2001 | onset
We have a 4C and it places 0402 components without any problems. The tricky part is getting the machine to pick them up out of the feeder it takes patience but you will get it. jake p.s. you
Electronics Forum | Thu Aug 24 13:31:55 EDT 2000 | Dave F
At room temperature, how long does it take for the phases of a common tin (Sn) / lead (Pb) solder, say 60/40, to reach equilibrium? While the materials are diffusing toward equilibrium do the material properties of the solder change significantly?
Electronics Forum | Wed Aug 23 08:55:39 EDT 2000 | Dave F
Dr. Lee: Taking a tangent on your response ... When talking about alternate solders. Bismuth forms an alloy with lead with a melting point of 93�C. Are there special conditions that cause this alloy to form? Or does the alloy form commonly when
Electronics Forum | Thu Jul 20 17:10:11 EDT 2000 | Darby
It's six in the morning here! Give me a bell the next time you are out here and I'll take you fishing on the sensational Sydney Harbour. However I will not be getting out of the boat and "diving" - too many noahs arks. I'll leave that to the daredevi
Electronics Forum | Thu Jul 20 14:31:20 EDT 2000 | Bob Willis
The process is not that difficult so have a go as soon as possible. Take a board wipe some paste on a board stick the part in and run it through the reflow process. Don�t worry about balling just see what you get first, that what I did first ! The m
Electronics Forum | Mon May 07 17:59:07 EDT 2001 | davef
One thing I forgot to add about the globs of solder on your bottom side SMT components after wave soldering: The excess solder is likely reducing the reliability of these components, because of the difference in CTE betweeen the ceramic base on the
Electronics Forum | Tue May 08 04:58:12 EDT 2001 | Kemosabe
I've never heard of such thing!!! We do occasionally have problems with fiducial recognition and have a difficult time convincing our operators not to use pencil erasers on them. The erasers take care of the recognition problems, but leave shavings
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