Electronics Forum | Thu Nov 11 11:11:18 EST 2004 | clampron
D.B., You are justified in your concern over the last requirement. I have been imposed by a customer with the same hand solder/rework requirements. It seems the biggest concern is thermally shocking ceramic chips. You are much less likely to do this
Electronics Forum | Fri Dec 10 16:53:05 EST 2004 | grayman
JD There are many lead free wave machines out in the market today. They promised to give best result for lead free. Companies here in our country who bought lead free wave machines 3 years ago is now having difficulties in controlling there machines
Electronics Forum | Sat Dec 18 01:45:42 EST 2004 | fastek
Vinit- The name's Rick by the way. Probably best to stay in the new equipment business as your knowledge of used prices is a bit out of whack. First of all you could buy (2) CP4-1's new for what and FCM went for new. Second CP-4's are selling for ar
Electronics Forum | Tue Dec 14 06:41:43 EST 2004 | clampron
Good Morning Everyone, I had a question regarding the use of a lead free BGA in a leaded process. All of the information I have gathered from various seminars state that this is OK. It will process more like a column grid array where the 63/37 will
Electronics Forum | Tue Jan 11 15:01:27 EST 2005 | patrickbruneel
I'm not a politician but it sure looks like protectionism and a short-term economy boost for Europe. Don't forget that lead-free for the electronics is a European directive, USA and other countries (exept for japan) have non of this on there agenda (
Electronics Forum | Wed Dec 15 18:03:28 EST 2004 | russ
I have used both 4 and 5 mil stencils for 10 mil round apertures. We don't have volume measurement capability but we measure height and the 4 mil appeared to have more paste and better uniformity from a visual standpoint than the 5 mil. The unfortu
Electronics Forum | Tue Dec 21 11:46:29 EST 2004 | KEN
Are you adding liquid flux? Or paste "Gel" flux? If liquid flux: This, in my mind, is an unacceptable technique. Why? 1. Can not control metals content. 2. Probably not adding the same chemestry flux...as paste flux has many different addi
Electronics Forum | Wed Jan 05 10:55:12 EST 2005 | OverTheHill
WOW Sr.Tech, 40K worth of bent tools? I'm about ready to be sh*t canned because of 1K's worth. As for trimming the mags, the product is running fine (many boards) and then out of nowhere the tool bends, so I assume my PERFECT operators trimmed the ma
Electronics Forum | Thu Jan 06 08:03:47 EST 2005 | davef
On solder in vias: It looks like the via are not solder masked well and pick-up solder either: * Solder coating ... OR * During leveling It's possible that the design specifies openings in the solder mask for these via. On solder in the unsupporte
Electronics Forum | Fri Jan 07 13:17:48 EST 2005 | bschreiber
3) There are several papers on the safety of cleaning PCBs and ICs using ultrasonic technology. The latest is in the October 2004 issue of SMT magazine by William Kenyon, "Why Not Ultrasonics?" Most of the studies have been performed by Dr. B.P. Ri
