Electronics Forum | Wed Sep 11 12:52:14 EDT 2002 | slthomas
We have found that using the SPC capability of the profiler's pc software helps us identify oven malfunctions sooner than we would normally find it. The ovens tend to compensate for dieing or dead blowers by cranking the heaters on for longer cycles
Electronics Forum | Mon Sep 09 21:02:30 EDT 2002 | davef
Bernard Interesting point. Please help us better understand: * Why do 'VIA hole, PTH hole sizes may need to be changed', aside from the obvious with hole-to-lead clearance? * What should the designer 're-evalaute the board before changing'? * What
Electronics Forum | Thu Sep 12 09:12:22 EDT 2002 | mhoughton
I have printed and placed similar devices in high volume with exactly this spec for a couple of years with no problems, are you using laser cut stencils and what type of solder paste are you using? and what is the end use of the product as it may nee
Electronics Forum | Thu Sep 12 09:15:29 EDT 2002 | mhoughton
I have printed and placed similar devices in high volume with exactly this spec for a couple of years with no problems, are you using laser cut stencils and what type of solder paste are you using? and what is the end use of the product as it may nee
Electronics Forum | Fri Sep 13 14:21:49 EDT 2002 | blnorman
Run a test, but in our experience, yes you can reuse the paste. We ran tests on paste that was left on the stencil at the end of second shift, we put the paste back on the stencil the next day on first shift with no problems. You definitely want to
Electronics Forum | Fri Sep 13 13:51:38 EDT 2002 | kenbliss
I recently saw an ad in a major trade magazine that stated: �about 60%of all printed circuit board manufacturing defects are due to stencil printing� I would like to hear comments from people that are running SMT lines, is this fact and if it is, w
Electronics Forum | Mon Sep 16 03:10:32 EDT 2002 | stefano_bolleri
Do you mean, rows of pins at the edge of the substrate, making it a SIP/DIP component? This is achieved by attaching leadframes with dedicated technology, and is a typical high-volume application. If you confirm this is what you are looking for, ther
Electronics Forum | Tue Sep 17 13:05:05 EDT 2002 | stepheno
On the Iron shaft? Why not on the connector to be protected. Actually now that I think back, I seem to remember seeing Kapton tape used on a part in a similar situation, but that I believe was a rework situation. Putting Kapton tape on every assembly
Electronics Forum | Wed Sep 18 12:31:16 EDT 2002 | dragonslayr
My suggestion is to conduct a Design For Manufacturing (DFM)study on the assembly in question. Pay particular attention to the pad sizes, component lead dimensions and satisfy yourself that those two factors are correct. Given that pads match compone
Electronics Forum | Fri Sep 27 13:53:27 EDT 2002 | pr
We used it only for operator verification of placement accuracy, your boardhouse should be able to show you examples of what they look like. They basically outline the outside edge (corner)of the part so you have a visual, after placement (since you
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