Electronics Forum | Thu Dec 23 09:27:30 EST 1999 | mike d
Good morning. I am currently in the process of validating our quoting process in comparison to what our colleagues are doing. If anyone could let me know what is the average cost per component for their smt operations I would really appreciate it.
Electronics Forum | Tue Dec 28 09:36:34 EST 1999 | Dan Woodward
Certainly automatic placement, preferably with vision system assistance will yield a more repeatable process. Process repeatability (paste deposition, connector placement, reflow cycle, etc.) will be your key to success here. Another possibility yo
Electronics Forum | Mon Dec 20 07:09:03 EST 1999 | Christopher Lampron
Ron, The simplest way to process fexible PCB's that I have found is to use a process carrier fixture. There are companies that manufacture process carriers that are capable of holding flex through stencil, placement and reflow. The carriers are capab
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 | Fri Dec 10 09:32:04 EST 1999 | Dave F
Joe: It might be tough to generalize about the number of times you can reform a lead before it is weakened beyond the point of reuse, because of different lead materials, thicknesses, amount of bending etc. It might be that "ugliness" is the answer
Electronics Forum | Thu Dec 09 17:18:44 EST 1999 | Russ
Ron, I'll bet you have the Ni/Pd finsh on these components! We have had the same problem in our shop. Not knowing the Kester spec. we had to raise the max temp to 220 Deg. C and increase the time above liquidous to 60 seconds or greater. It seem
Electronics Forum | Fri Dec 10 09:12:16 EST 1999 | Dave F
Boca: I appreciate your point, but that's surely not what the 60+% percent of our female assemblers think!!! Why make someone feel bad when there's no point, aside from learning a new way of doing something? I'm not sure that it makes any less of
Electronics Forum | Sat Dec 04 09:33:18 EST 1999 | Christopher Lampron
Hello Russ, I believe that the dullness in color of the solder joint is related to the gold finish on the pads. I have had done alot of thru hole soldering of gold pins as well as SMT on gold finish and have seen the condition that you are talking a
Electronics Forum | Thu Dec 02 09:56:32 EST 1999 | Larry Johnson
Okay, I believe that the XY table on our CP4-2 is not working correctly. When we place smaller parts (603,805,RNETS, etc...) they aren't seated in the paste all the way. Larger parts aren't a problem. They are kind of "floating" on top of the paste.
Electronics Forum | Thu Dec 02 09:45:02 EST 1999 | Larry Johnson
Okay, I believe that the XY table on our CP4-2 is not working correctly. When we place smaller parts (603,805,RNETS, etc...) they aren't seated in the paste all the way. Larger parts aren't a problem. They are kind of "floating" on top of the paste.
