Electronics Forum | Tue Oct 09 11:22:08 EDT 2001 | nifhail
Can I use one common cleaning agent to clean the stencils from a lines which are using RMA, No-clean and clean paste ( b'cos we onlyhv one stencil cleaner ). What about those misprinted board ? Can all of them use the same chemical or cleaned in the
Electronics Forum | Tue Oct 09 14:59:52 EDT 2001 | slthomas
That's what we do with our MSHII's...setup one carriage offline while the other one runs. We also have setup carts to load the feeders ahead of time and haul them out to the lines. Of course, when we exceed the carriage capacity of 75 slots for an
Electronics Forum | Fri Nov 09 14:42:08 EST 2001 | vickt
Great advice!........Single tier feeder set-up carts are also available through Universal instruments directly for this exact purpose. Most people who really care about this changeover time have "pit-crews" that work in the component storage areas, o
Electronics Forum | Wed Oct 10 09:38:32 EDT 2001 | brownsj
I'm trying to design a costing matrix for raw cards so our designers can estimate the costs of their raw card designs, this will hopefully slow down their lust for technology and get them considering project budget costs. Does anyone know of where I
Electronics Forum | Tue Oct 16 17:18:25 EDT 2001 | lileubie
Hello Chua, Welcome to the world of SMT. You found this site, so you're already on track to learning about SMT. You can check out SMTnet's library as well as SMTA's (Surface Mount Technology Association) located at http://www.smta.org. Check that
Electronics Forum | Wed Oct 17 12:27:57 EDT 2001 | nifhail
Can anyone share with me the best timing for the escalation process, let it be either equipment downtime or process downtime ? Our SMT line is really up to the throat. I used to hv an escalation process like, say if the printer down, the machine will
Electronics Forum | Mon Oct 29 16:34:02 EST 2001 | patcope1
I have a custom connector that tends to lift during reflow. The PCB retention tabs and pins are lifting off of the pads on the board and the solder is forming underneath the pads, with no heel or toe filet. Is there anyone out there that can help if
Electronics Forum | Mon Oct 29 18:21:43 EST 2001 | slthomas
We recently have received a lot of warped (bowed and/or twisted behond IPC 600 specs.) bare boards (some our fabricator's fault, some ours by design) and I can't help but figure that long term reliability will suffer when building product with them.
Electronics Forum | Tue Oct 30 19:49:12 EST 2001 | davef
We have rules [like: calibrations can not be rescheduled], but I can't think of them right now. So maybe if I put something down here, it'll get some other folk off their spotty beehynds. Planned maintenance: We schedule this in the MRP. Unplanned
Electronics Forum | Tue Oct 30 18:43:31 EST 2001 | mparker
My first thought is board warp. This is something you can't see when the board is in a reflow oven. I see it occasionally going through wave solder. You may need a pallet with hold down clamps for reflow. Try putting a bare board in a baking oven at
