Electronics Forum | Mon May 21 09:06:33 EDT 2007 | davef
Pat: Very descriptive SUBJECT choice. Surface tension: * Soldering and Surface Tension; Champion, JA; Physics Education, V 16, No 2, 1981, pp 98-100(3) Institute of Physics [We have not looked at this, so we cannot comment, but it seems like an appr
Electronics Forum | Thu May 31 03:12:18 EDT 2007 | vinitverma
Hi John, You can write to me offline at vinit.verma@prosemtechnology.com and write the exact problem that you face after you have generated the action spec using PPS Pro 8.1. What is the problem that you're facing. The coordinate system is taken ca
Electronics Forum | Fri Jun 01 08:29:41 EDT 2007 | patrickbruneel
OR: Stands for organic (organic acid based flux) with the absence of rosin and/or resin. If you want to know everything about the classification of fluxes get the J-STD-004 �Requirements for Soldering Fluxes� at following link: http://webvision.ipc
Electronics Forum | Tue Jun 05 22:59:18 EDT 2007 | davef
There is no standard. Companies select a lower control limit based on the desired cleanliness. Guidelines to consider are: * With fresh resin beds, expect get 17.5 mohm-cm water into the final rinse and then it decreases from there. * Semiconducto
Electronics Forum | Fri Jun 08 08:26:14 EDT 2007 | davef
Testing for solder mask cure: Search the fine SMTnet Archives, for instance: http://www.smtnet.com/forums/Index.cfm?CFApp=1&Message_ID=15726 Residue after wave: Water in your wave soldering flux may cause your NC flux residue to go white. Indium W
Electronics Forum | Fri Jun 08 12:02:33 EDT 2007 | grics
Thanks for the excellent info on testing uncured solder mask. I just checked with Chris Nash of the Indium Knowledge base and he told me that the Indium 3592 can be cleaned if need be and that I should contact Kyzen or Zestron (they are the 2 compan
Electronics Forum | Tue Jun 12 18:48:49 EDT 2007 | mefloump
We seem to have an overwhelming amount of foam produced in the initial rinse portion of our wash (enough to cause it to overflow). We are using an Austin American Hydrojet Mach III Inline Cleaner. To my understanding the first rinse of the boards is
Electronics Forum | Tue Jun 19 17:42:38 EDT 2007 | dyoungquist
We run a TP9 machine and had a very similar problem with it. On a TP9 machine there is a power supply board where all the voltages are generated. It is located on the bottom side of the unit. The problen was with one of the fuse holders. The co
Electronics Forum | Wed Jun 20 13:50:52 EDT 2007 | rgduval
Dominic, I guess it would depend on criticality and volume. We do mostly low volume builds here, and the only time I do a solderability test is when we encounter an issue during production. That process works for us, considering the volume of the
Electronics Forum | Mon Jun 25 19:36:36 EDT 2007 | bga_kid
If you calculate CFM using the numbers you have provided you are pulling 1396CFM out of the oven. I am not sure what Hellers spec is but I know a Speedline OmniExcel Air machine should be set at 300CFM. I do know for a fact that to much exhaust can s
