Electronics Forum | Thu Aug 12 12:18:13 EDT 1999 | Kevin Hussey
| Q.C. manager asking me about spc's for Mydata Pick & Place. | Other then Visual inspection, is there other ways to automate | placement inspction? | | Thanks | Sure! There are a few automated vision systems available today that could be just wh
Electronics Forum | Tue Aug 10 11:44:20 EDT 1999 | John Thorup
| Does anyone use reflow profilers? Are they a good investement or is trial and error sufficient? | | Does anyone have any suggestions on profiles to try? Thanks. | Danielm I would hazard a guess that most if not all of us production folk do. I c
Electronics Forum | Wed Aug 04 22:35:32 EDT 1999 | ScottM
| What oven temperature should be used to reflow solder (Sn63Pb37) on a PC board (0.075" to 0.100" thickness) in 5 to 10 minutes? | D... is correct -- it's all dependent on your paste and your oven. Call your paste supplier (each one has a technica
Electronics Forum | Fri Jul 30 16:43:28 EDT 1999 | Dreamsniper
Surface Mount Components like QFP's in Tray usually comes sealed in an anti-static plastic pack. In case the QFP's were removed from the said anti-static bag for more than 2 weeks, do these components needed to be baked for they might produce solder
Electronics Forum | Mon Jul 26 18:28:10 EDT 1999 | Jon Prokop
Can anyone give me the virtues of SMT package castellations vs. no castellations with particular reference to the ruggedness and reliability of the solder joints? Any references or studies that you can point me to? Also, although I'm in favor of pr
Electronics Forum | Fri Jul 16 22:49:55 EDT 1999 | Vic Lau
| We intend to use VOC free fluxe in our nytro machine. Does anybody know if there can be problems with water ie. solvent residues in the tunnel. Perhaps there are some white papers available on that issue. | | | | | Dear Raeto, In my experienc
Electronics Forum | Thu Jul 15 07:16:55 EDT 1999 | Steve
Hello All, I am setting up a line to mount CSP/uBGA devices and now am looking at the X-Ray process. It is my opinion that this should be done offline - can you tell me if Im right or do I need to put one inline? Also anyone who is mounting CSP/uBG
Electronics Forum | Wed Jul 14 09:33:18 EDT 1999 | Dave F
| Our plant in Slowakia tries to convince me that it is not possible to reflow FR2 PCB-material. | At this moment the PCB's leave the reflow dark coloured and they are schrinked. | | I'm still waiting for a reflow profile, because I can't believe th
Electronics Forum | Fri Jul 09 17:50:20 EDT 1999 | Jim Blankenhorn
Hi Carol- What you are asking for can be done. Variables you must account for include the paste viscosity, dispensing head speed, dispenser height relative to board surface, and needle size. You can use most any semi-automated system such as Camalo
Electronics Forum | Wed Jul 07 13:33:45 EDT 1999 | Dave F
| who can tell me how viscosity measurements are really effective in smt process control? what can I monitor? Is it depending from fine pitch size? | Thanks a lot. | g. d'andrea | People write books on SMT process control. What's your problem? I
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