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 | Thu Sep 13 10:49:24 EDT 2007 | slthomas
If someone knows specifically what the sequence of events is in a Topaz placement step I'd appreciate it if you could share that with me. We've developed an intermittent problem with ours where it places the part and immediately stops with E0873. T
Electronics Forum | Tue Sep 18 12:10:39 EDT 2007 | wailiang81
Hi, good day to all. This is my 1st question post in this forum. Hope able to share some knowledge here. As we know QFP area like 0.4mm pitch was a very critical area to control especially those PCB using silkscreen printing process manufactured. Onc
Electronics Forum | Sat Sep 22 02:14:08 EDT 2007 | mika
Another thing to make sure of and the vision calibration system will fail if this is out of range: Use a magnet foot stand micrometer and measure the spindle run outs. First remove the nozzles and nozzle adapters, then put the adjustable tip (I dont
Electronics Forum | Mon Nov 12 09:22:41 EST 2007 | devajj
BTW, The surrounded QFN fine pitch terminals > should have the normal aperture reduction of 7 % > in case of RoHS Senju solder paste. This works > for our Telecom customer. > > The vias in the > ground pad will be somewhat filled with solder >
Electronics Forum | Mon Nov 19 13:27:21 EST 2007 | etienne
People not knowing how to use them...surely not my case........I have worked for more than 7 years with a Topaz and always performed the maintenance and repairs on my own without the assistance of field service engineers!!! Please respect cause I kno
Electronics Forum | Fri Nov 30 11:04:23 EST 2007 | slthomas
Sounds like Mydata might be one you could look at, for example. I don't have experience with them but they do have "smart" feeder capability. Some machines use electronically controlled and motor driven feeders, some use pneumatic and/or mechanicall
Electronics Forum | Tue Jan 01 22:50:53 EST 2008 | fastek
To get beyond the 36,000 cph threshhold the turret manufacturers had to focus on ways to get the boards in and out of the machine faster. This also included loading more boards inside the worknest. The end result in Fuji's case (CP-643), was a table
Electronics Forum | Tue Jan 15 21:44:05 EST 2008 | davef
We believe that tip tinners reduce the life of the tip, also. Why do you use such a product? We like using solder paste to clean solder tips. Place expired solder paste in a covered container. Open container and dip the tip. It comes out clean and s
Electronics Forum | Wed Jan 23 19:44:45 EST 2008 | hegemon
In addition to the pre-emptive steps mentioned above, in my experience there are certain BGA package designs that seem more prone to that corner bridging. I have seen some packages that will essentially "curl" down at one corner as the package begin
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