Electronics Forum | Tue Jan 30 17:58:49 EST 2007 | flipit
Hi, I would not be too concerned about what the shape of your wirebonding fiducial is. Cross, Square, Diamond, Circle, will all work well for you. I use a "+" and a diamond. Your machine magnification will be great, so don't make the fiducials to
Electronics Forum | Thu May 29 14:57:26 EDT 2008 | rodrigo
Hi all, Is it normal for some of the small nozzles to be rejected by the wide view camera? Every time I do a nozzle centering the narrow view camera shows green circles for nozzles 1,2,3,4. The larger ones (5 and 6) show the asterisk. The wide view c
Electronics Forum | Tue Sep 06 12:39:06 EDT 2011 | deanm
According to IPC-7351A, the optimum fiducial is a solid circle with a minimum of 1mm diameter, but can be up to 3mm. There should be a solder mask clearance a minimum of 2x the radius of the copper circle. So the minimum fiducial size is 0.040" with
Electronics Forum | Mon Jun 04 10:40:37 EDT 2012 | davef
I'm not aware of any such stipulation about witness [probe] marks for assembled boards, per se. Certainly, witness marks should not affect the intended performance of the assembly, you know, like damaging the solder connection or smudging solder mate
Electronics Forum | Tue Jul 03 16:15:08 EDT 2012 | kq702
Hi, when they did the reflow with the south bridge chipset they took a heat gun and went arround the chip in circles. This is what I did with the broken apple motherboard. I covered the board in tinfoil and cut out the squares arround the gpu, cpu an
Electronics Forum | Thu Nov 07 15:06:11 EST 2013 | hegemon
1st X-Ray looks pretty good. One instance of what looks like solder migration in the lower left quadrant. 2nd X-Ray shows a number of locations where the solder has migrated into the vias, shown by the small dark circles between the main spheres.
Electronics Forum | Mon Mar 13 19:25:12 EDT 2023 | griinder
Barcode Definition - you can input the search window size. Default lighting works best for me. I name it "bc". Window>Barcode List- This is where you input the position on the panel or circuit 1, give it a ref designator "again I use bc", and select
Electronics Forum | Mon Nov 06 11:34:54 EST 2000 | Wolfgang Busko
Hi John, can�t find that one in the archives. Isn�t all the trouble you may get dependend on the way you design the thing? For example, tight fit with with step/ridge nearly zero and clamps for holding down the inner circle to prevent vibrations. F
Electronics Forum | Thu Mar 30 21:54:55 EST 2000 | Dave F
Mike: Baring the obvious. I don't have much, but here goes. Daphne Eponex Grease #2 is marketed by the Industrial Products Group of Ryowa Oil. Ryowa Oil's parent s Ryowa Corporation of Osaka Kobe Japan. Be aware that "Ryowa" seems to be a fairly
Electronics Forum | Mon Apr 18 20:13:27 EDT 2005 | Frank
Have you seen this mix up as well? 01005-inch (some people are simply saying 1005) components in metric are 0402-mm. And since 0402-inch is 1005-mm, it is a never ending circle of conversion confusions. We are using millimeters on the machines, bu
.gif)
