Electronics Forum | Tue Sep 04 10:27:33 EDT 2007 | rgduval
I haven't experienced this problem, exactly, but I have had issues with noise in digital circuits that appear to have gone away with touch up. The problem was that the customer blamed the noise issue on the solder quality, and he pointed to the fact
Electronics Forum | Tue Sep 04 10:48:49 EDT 2007 | lloyd
How do other people check their solder joint strength after a process change? For example, say you are getting wetting problems and you feel that a change to the reflow profile may help, or perhaps a slight change to the stencil aperture to reduce so
Electronics Forum | Wed Sep 05 10:59:02 EDT 2007 | slthomas
What's sad is, it really happened. I won't bore you with the details again. ;) Lloyd, I would love to have a nice Hi Scope too (I think Cchunks works for one of those big champagne and caviar corporate entities ;)) but if you can't swing it, at leas
Electronics Forum | Tue Sep 04 15:08:51 EDT 2007 | floydf
We have a job that has through hole components on the top, and one 44 pin j leaded PLCC on the bottom. Presently we put the through hole parts in, run it throught the wave, dispense paste on the PLCC pads, and then apply hot air. Someone suggested we
Electronics Forum | Thu Sep 06 15:36:27 EDT 2007 | kpm135
My company recently aquired an asymtek coating machine and I have been using Humiseal 1B31, an acrylic coating, in it to coat all the boards given to me. They have now come to me and asked if it is possible to run Humiseal 1A33, a urethane coating, t
Electronics Forum | Thu Sep 06 22:01:21 EDT 2007 | syedsmt
Hi! I am Syed from Hitachi located in Malaysia.It seems that the discussion about OSP is very much related to the dillema that I am facing in my company.I am the Senior Executive for the SMT Department at Hitachi.Currently we are facing some issues w
Electronics Forum | Mon Sep 24 07:38:01 EDT 2007 | chrispy1963
I never saw in any post if your machine uses the camera to find the board edge or if your machine uses the bottom front rail mounted board stop sensor. Also is this with only one particular job you run on this machine or is this happening with ALL
Electronics Forum | Mon Oct 01 11:57:34 EDT 2007 | kpm135
I've never worked with a MPM printer but I had something similar happen on a DEK printer. The problem was that screens were manually centered in the machine and the operators were not careful enough when setting it up so the settings were very close
Electronics Forum | Tue Sep 11 12:45:01 EDT 2007 | rgduval
Both questions will depend upon the IC specifications. Check the manufacturers recommendations for temperature specification, as well as reflow profiling. As a general rule, we don't like to rework a component more than 2 times after initial reflow
Electronics Forum | Fri Sep 14 02:28:31 EDT 2007 | Mag10
Thanks davef. Your comments are well taken. How about the trays transporting boards from one station to another or staging at WIP Kanban? It��s easy enough to segregate rework stations and tools. Trays are used thru out the plant without segregation
