Electronics Forum | Tue Jun 13 13:40:20 EDT 2006 | Bob R.
Wow, good luck. None of my test results would be helpful since we use IPC-B-24 test boards as received from our board suppliers so we have a clear understanding of what we're shipping customers, not necessarily paste performance alone. We'll only cl
Electronics Forum | Fri Aug 04 13:47:20 EDT 2006 | pemea1
apples to apples. 20 boards 80 parts top and 10 parts bottom. these boards are done on a semi regular basis (you know the boards are coming to you from an OEM at least three times a month, just no exact schedule). All that is required is pasting..mo
Electronics Forum | Tue Aug 29 08:11:12 EDT 2006 | davef
"... we've coerced Josh into driving us out to Watson's bay, braving the horrendous parking situation, to visit Doyle's." Good for you, but you could be parking on a sinkhole: http://www.uwsp.edu/geo/faculty/ozsvath/images/winter_park_sinkhole.htm
Electronics Forum | Wed Aug 30 23:58:53 EDT 2006 | jasmin
We are looking into purchasing a used UP-2000 > Hi-e. We are high mix /high change-over. The > machines I am looking at are equipped with the > grid-lok system. > > Can anyone give me pros's/ > con's ?? > > Thanks in advance. > > Sr. Hi Sr T
Electronics Forum | Tue Sep 19 00:35:54 EDT 2006 | darby
Fred, We receive ENIG pcbs in vac-formed bubble wrap with ,of all things, polstyrene packing! Despite my long-lasting complaints nothing has changed. BUT - I have never really had a problem with any of these PCBS. There are no moisture, salt or any o
Electronics Forum | Tue Sep 26 09:57:19 EDT 2006 | daxman
Thanks Chris... I do not have the c-tool, but I did make some adjustments to the middle cube when I was calibrating it. Like I said in an earlier post, I cleared the vision offsets in the ap.cal file and adjusted the middle cube until the board alig
Electronics Forum | Thu Apr 26 20:18:45 EDT 2007 | hegemon
For what it is worth, we are purchasing a dispensing system including a Robotic Arm, Positive Displacement Valve (as opposed to volumetric displacement) and Controller. We have purchased this unit for doing lead free 20 mil dots at 30 mil pitch in s
Electronics Forum | Fri Nov 16 08:33:46 EST 2007 | rgduval
For RoHS assemblies, we're spec'ing at least FR-406 for the higher Tg. We're currently requesting our customers to use ENIG finish, as we've had better luck with assembly in our process; but we're currently experimenting wtih lead-free HASL. As far
Electronics Forum | Wed Dec 19 20:42:55 EST 2007 | davef
gersla: You're correct that carriers of low temperature material will disfigure and become useless at 125*C bake temperatures. The reason you can not find 70*C bake data is: J-STD033B, "4.2.2 Low Temperature Carriers. SMD packages shipped in low tem
Electronics Forum | Wed Dec 19 15:43:23 EST 2007 | cdsullivan
Hi, I was just wondering what the most common process is for silkscreen/legend removal and/or rework? Scenario: Fab house had a registration issue on some SOT-323 packages where the silkscreen encroached or was actually printed on the surface pads
