Electronics Forum | Tue Jan 23 19:27:28 EST 2007 | asir
which characteristics? An alloy with similar melting points, wetting, shear force, reliabilities, etc. Indium has an article about 77.2Sn/20.0In/2.8Ag, but was wondering is there any other out there.
Electronics Forum | Fri Jun 03 14:55:15 EDT 2005 | Bman
Both our Quad ZCR and our Conceptronic HVN-102 ovens have had blowers out with no alarms raised. We knew there were problems based on how boards were soldering, but don't count on your oven to tell you if anything is wrong with it. We verify once a
Electronics Forum | Tue Jan 23 17:16:07 EST 2007 | darby
Check out the web sites of the major solder manufacturers. From a quick glance most of the pastes around that temperature range have problems with Zn content and may not be available as pastes???? Depending on your application, some of the lower melt
Electronics Forum | Fri Jun 10 12:11:49 EDT 2005 | chunks
QS and ISO can really play a part here. If so, the best way I found was to run parallel T-couple ports to the thermocouples of the oven. Now you can run a board and gather all your thermal information and set your temps. Now use parallel ports to
Electronics Forum | Fri Jun 06 07:23:18 EDT 2003 | johnw
Hi Kevin, the profile doesn't actually qualify something as lead free or not it's purely the Pb content of the assembly that does this. Currently the understanding of the limitations of the lead in the jont is 0.1% by weight or less. So as long as y
Electronics Forum | Tue Apr 09 07:41:08 EDT 2002 | johnw
Craig, it depend's n what you want to look at. In term's of te gran structure of the solder jont that's formed when the joint is cooling so you'd want to monitor the temperature drop from the peak or say 215dg C for ref down to probably about 150 an
Electronics Forum | Fri Apr 09 12:46:10 EDT 1999 | Bob Barr
I have been using an Air-Vac DRS-22 for almost two years with very good results. Once a profile is developed it is very repeatable. The DRS-22 is no longer available, however. It has been replaced by the DRS-24. Unfortunately, the DRS-24 has a lo
Electronics Forum | Wed Jun 06 20:25:06 EDT 2001 | davef
Good machine, good people; yer just about there. Look here for help: http://www.mot.com/SPS/PowerPC/teksupport/teklibrary/papers/BGA_AssemblyRework.pdf http://channel.intel.com/design/quality/component/rework_socketprofiles.htm Earl Moon, a depart
Electronics Forum | Mon Jan 09 19:25:15 EST 2017 | fadzril
It shouldn't be any issue if you measure the top reflow settings using bottom profile board & the results are OK. To common the reflow profile, both bottom & top profile measurement are taken & analyzed. This, too, can be applied, even for differen
Electronics Forum | Tue Jan 24 22:43:20 EST 2017 | david_chiu
Absolutely ok!! We already co-use the same profile setting for top and bottom side to avoid line efficiency loss for more than 10 years. But only one thing you should careful is the heavy mechanical parts on bottom side may drop during reflow proces
