Electronics Forum | Wed Nov 17 15:04:27 EST 2004 | russ
SMT assembly, First, you must utilize paste otherwise the parts will not stay put. Do you have any leaded devices such as QFPs or SOICs? Dispensing paste by hand is very difficult and time consuming for these types of parts. You can either dispense
Electronics Forum | Wed Nov 11 06:59:20 EST 1998 | Jim Mitchell
Scott - Good to see things are going well for you. With regard to your comments, Quad has introduced a complete line of Semi-conductor/APT machines (Q Series) that support both SMT and Semi-conductor applications. The machines were introduced in 19
Electronics Forum | Wed Dec 03 10:44:03 EST 2014 | kkay
We have a smt connector on side one of our pcb that overhangs through the board to the second side. We can't figure out how to print the second side with this part sticking out. Unfortunately we cannot run the second side first due to an LGA that has
Electronics Forum | Thu Aug 27 09:58:45 EDT 2015 | fcmtechnician
Hi Take out the steel plate, is acting like a trampoline, oscillating with the machine movements! Is the machine leveled OK? The installation guys use 0.02/1000 Spirit Level ( leveler )? Let the machine on the concrete floor, try first on the top o
Electronics Forum | Fri Dec 17 09:24:46 EST 1999 | Marty Wetzel
KA, Joshua makes a good point. A wave solder fixture will allow you to process your double-sided boards without having to add the epoxy step. The one time fixed cost of a fixture is quickly offset by the time that you save by not gluing your SMT.
Electronics Forum | Mon Dec 20 17:34:17 EST 1999 | Dave F
Ron: Chris is correct that there is a bunch of fixture fabricators that make good products that will serve your purpose. Other fixture fabricators can be found in the archives. Problems with these fixtures are: 1 Out-rageously expensive 2 Very lo
Electronics Forum | Wed Jul 14 13:50:11 EDT 2010 | swag
I can't offer much advice on acceptible rates or #'s. From a process standpoint, most of your bridging or insufficient originates in your printer. Look into buying dedicated tooling specifically designed for the build. We use "h-towers" on all hig
Electronics Forum | Wed Jul 14 13:41:40 EDT 2010 | rway
We are running SMT products and have been for some time now. First, I wanted to check with you folks to see what an acceptable FPY rate, or what you would consider and acceptable rate, is. Secondly, we are having issues primarily with product that
Electronics Forum | Wed Jul 14 18:51:24 EDT 2010 | rway
Thank you. I spoke with our SMT guy, and he stated that there is plenty of board support on the pcb. So it's not a matter of flexing. There just seems to be inconsistancy in the solder application. He did mention that part of the problem is a lac
Electronics Forum | Wed Jul 14 15:36:34 EDT 2010 | remullis
98% to 99% pass yield should be your target. The previous company I worked for, we were able to meet these goals with most all of our products. It took us some years to achieve this level of pass rate. Of course analyzing and good reporting from some
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