Electronics Forum | Sat Feb 26 20:44:46 EST 2005 | siverts
Some of the QFN's have/has? (sorry for the grammatics but I live in Sweden) a "ground pad" underneath the center of the body. Some of the manufactories have made a specification of how much solder fillet that needs to be covered on the center pad [f
Electronics Forum | Mon Mar 07 11:26:29 EST 2005 | mrduckmann2000
Pete, I was speaking to the Electrovert/Speedline/Camalot/Gemini factory tech's and App Eng's. I now have new machine files which slowed the pumps down to half speed, I have several needles....all of which still will not place a small enough dot.
Electronics Forum | Tue Mar 15 07:59:07 EST 2005 | mattkehoe
We are looking for some feedback on this situation. Please let us know if you have any ideas. Thanks in advance. I have been doing some studies on defects and such with our PCB's in prep for lead free and I've come to a conclusion about our process.
Electronics Forum | Tue Apr 05 08:41:39 EDT 2005 | aj
Guys, I posted a thread on this sublect a while back and I thought we had it sorted but we have the same issue again. One of the SMT operators has chapped skin,sores which sometimes cause cuts. This looks extremely uncomfortable. We thought it was
Electronics Forum | Sat Apr 30 10:37:25 EDT 2005 | Daniel
I think he did mentioned the board size in the inital thread: "265mm x 207mm pcb", but maybe it was not clear written. I have a question about rework and pre-heat: is it necessary to have the pre-heater to cover the whole board size, even if you onl
Electronics Forum | Sat Apr 30 13:56:31 EDT 2005 | steve
My experience with different size boards and pre-heaters. The perfect world (right?) you would saturate the complete pcb with bottom pre-heat. But it is difficult with repair and rework equipment, not to mention the expense and foot print of large pr
Electronics Forum | Tue Apr 26 16:00:08 EDT 2005 | jdumont
Good day all, we are having problems with some new BGAs that are slowly filtering their way into our designs. Engineering really wants to use them and I am pressured to make them work. They are 54 ball BGAs. The pitch is .8 mils and the ball diameter
Electronics Forum | Tue May 03 10:34:34 EDT 2005 | MikeaJ
If your image is not defined properly, it will affect positioning and optimization. You can choose center, rear or front image justification. If your values are grossly off, your positioning will be off, and you may not be able to optimize properly,
Electronics Forum | Wed May 04 08:10:40 EDT 2005 | jh0n!
I completely agree with the both of you, and mgmt. has decided to go that way. Cost, I pleaded, is negligible when compared to the addtl. work/headache of working with an additional adapter. Let me drag this further off-topic if I might...I've read
Electronics Forum | Tue May 17 16:46:52 EDT 2005 | davef
Most placement machine equipment suppliers offer software for line balancing. What's with Fuji? Fujitrax is a system developed in order to attain high levels of "progress management, quality management & traceability" over several SMT lines, throug
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