Electronics Forum | Wed Jul 03 14:08:10 EDT 2002 | gbriceno
I' designing a PCB with SMD components to optimize the land patterns for wave soldering. I find that the IPC-SM-782 land patterns are not robust enough for wave soldering, yielding ramdom skips and bridges. This PCB will also give me insight on sha
Electronics Forum | Tue Nov 26 09:19:29 EST 2002 | pjc
MPM UltraPrint 2000 2D Inspection Times: QFP 256 pin 16Mil pitch is 7.5 seconds BGA 225 ball 20Mil pitch is 1.8 seconds Find out the DEK times for these devices. Any UP2000 of 1995 mfg. date oand on can be upgraded to the latest software. Concer
Electronics Forum | Thu Feb 13 13:51:03 EST 2003 | gregcr
As engineers it is not uncommon that we use or are asked our opinions on the software systems that are used in the plant. I would like to know if any of you have had good/bad experiences with facility software systems, especially those involved in I
Electronics Forum | Thu Apr 10 17:44:22 EDT 2003 | davef
Q1: Can they be masked so parylene doesn't get underneath? A1: Your parylene applyer may be able to mask area, but in general no. This stuff is cured in a vacuum chamber to make sure that it gets into every past corner. Q2: How do you remove and re
Electronics Forum | Tue Dec 14 03:45:31 EST 2004 | rlackey
I don't think that the ones I encountered were "fake", I think that they were cheap copies - ie. actually meant to work, not just to part someone with their cash - engineered to a price (just a very low one!). It does seem a bit strange to go to the
Electronics Forum | Wed Mar 09 07:44:32 EST 2005 | cyber_wolf
Ya know, The weird part is that we seem to have a real bad rash of nozzle sticking right after windmill PM's. After the machine runs for a week or so it seems to get way better. Like 99 to 100 % better. This leads me to believe that it is not a Z h
Electronics Forum | Wed Aug 24 10:53:37 EDT 2005 | PWH
Thanks for the input. Currently we have the advantage of having almost all SMT operators trained in advanced programming so we are able to make changes easily to feeders, etc. Many of the things you mention we do at this time so it's funny to see t
Electronics Forum | Tue Oct 11 14:42:15 EDT 2005 | patrickbruneel
NASA website on Tin whiskers: http://nepp.nasa.gov/whisker/ NEMI Tin whisker activities: http://www.inemi.org/cms/projects/ese/tin_whisker_activities.html CALCE Tin Whisker Working Group: http://www.calce.umd.edu/lead-free/tin-whiskers/ Measur
Electronics Forum | Mon Mar 12 04:13:05 EDT 2007 | Rob
Hi Greg, I only wheel it out periodically when you go for a seasonal bout of free advertising! It was a compromise trying to be all things to all people, whilst fitting in with electric cycle legislation to avoid the age barriers and car requiremen
Electronics Forum | Thu Jan 31 07:55:04 EST 2008 | tonyamenson
I noticed on the floor that workers hand place some SMT parts becuase some parts that came in a tube (instead of on a reel) do not fit properly into the tube feeders. The tubes dont align properly in the feeders becuase of their size. Are there any
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