Electronics Forum | Tue Feb 17 04:52:13 EST 2004 | John W
There's normally a number of reasons people want to know what melts 1st, 1 - to see if you know, 2 voiding issues - whole can of worms 3 device alignment. One of our collegues has said that most balls are Eutectic, that's in fact not totally correct.
Electronics Forum | Fri Feb 20 13:01:26 EST 2004 | Jay
First, it depends on the alloy composition of the solder. As you might know, eutectic Sn/Pb solder has the lowest melting point among available conventional solder systems. (except those based on Sn-In and Sn-Bi systems.) For example, 63Sn/37Pb - 183
Electronics Forum | Thu Jun 10 16:23:11 EDT 2004 | davem
Hi Grant, In previous positions I've had experience with the Fuji CP43, CP6, CP642, CP643, CP65, IP3 & QP242. In operating, training and process engineering capacities. Presently, I'm working with 2 SMT lines (in a process engineering capacity) wit
Electronics Forum | Mon Jan 09 18:51:05 EST 2006 | grantp
Hi, I have used both MYDATA TP9, MY9 and more recently MY12. MYDATA machines are just not accurate, and we did everything possible, and every kind of upgrade they had. We ended up putting in Fuji XP based machines, and the differences are very notic
Electronics Forum | Fri Sep 23 08:16:57 EDT 2005 | gregp
Base, You are absolutely correct. This is what I intend to do. In fact, our feeders at one time had reel hangers that would allow for reel removal and thus splicing. Sometimes it is frustrating when people are set in their ways and won't consider
Electronics Forum | Tue Sep 02 18:49:05 EDT 2008 | jlawson
Juki machines generally are great machines for reliablity and maintaining overall accuracy as they have full linear (mag-scales) encoders on XY axis and self calibration features. Laser centering has its pros and cons - mostly pros, but can have iss
Electronics Forum | Mon May 21 17:32:23 EDT 2001 | davef
I said: "Our electronic circuit board fabricators seal the boards in moisture barrier bags [MBB]. We discontinued the use of desiccant bags in these MBB because of concerns about the desiccant releasing materials that would affect the solderability
Electronics Forum | Sat Jun 30 11:03:29 EDT 2001 | davef
Nice to have you back on SMTnet. Some of the newer folk have missed-out on the solid contributions you�ve made to the Forum. The chicken wire cleaning basket was a classic!!! [It�s a shame that the folk at SMTnet can�t recover those files.] We bu
Electronics Forum | Thu Jun 25 09:53:04 EDT 1998 | Earl Moon
| | Has anyone had experience with placing BGA on gold plated boards. I thought I read a while ago there was a problem with embrittlment causing cracked joints. If anyone has experience with this your feedback would be great. | | Mike | Mike, | You
Electronics Forum | Tue Jan 17 12:25:56 EST 2006 | Cmiller
Pete C, this forum has no value if people do not share thier real world experience. We can all do research on our own. We can all make bad decisions or good decisions based on that research because most of the data we have access to comes from the pe
