Electronics Forum | Fri Feb 21 20:41:32 EST 2003 | Raul
It is a common knowledge that sulphur and immersion silver finish on a PCB do not go together very well. We are seeing peaks of sulphur on some of our assemblies (with silver finish) and as expected we experience severe difficulties with processing t
Electronics Forum | Tue Dec 12 14:47:55 EST 2000 | Chris Newell
We run Siemens SiPlace SMT equipment. One of our biggest problems is feeder tape splices jamming our feeders. We use Siemens recommended method of splicing our feeder tapes together. This has been causing upwards of 10% lost time on some of our build
Electronics Forum | Wed Dec 13 03:40:13 EST 2000 | G. English
We have seen this problem, again using the methods recommended by Siemens. We tried different methods of splicing the tapes, but again the material was clogging in the feeders and especially in the cogs which grip and feed the tape. The only method
Electronics Forum | Tue Dec 12 13:45:22 EST 2000 | Neil Peaslee
Thanks for the report Wolfgang. Part of the problem may be because we have been experiencing a higher rate of server problems lately. We will be launching a completely new version of the site on fresh servers very soon. Hopefully that will take care
Electronics Forum | Mon Dec 11 15:12:20 EST 2000 | accuspec
we are using alphametals no clean 95sn/5ag CL775 paste. After reflow there are solder balls on the board. mainly are around the cap. We are using a conceptronic concept 60 air. There are 4 zones with 8 chambers. We are not sure what the profile
Electronics Forum | Fri Dec 08 21:36:42 EST 2000 | reg
Hi everyone!! I have less than one year in the US, and I had been working as a field smt engineer. I have almost two years of experience as a manufacturing engineer, but what I really would like to do is process engineering. Can somebody advice
Electronics Forum | Fri Dec 08 12:38:51 EST 2000 | Andreas Foehrenbach
Hy all, i'm in need for some data about the electronics market: - general Industry Data of SMT and SMT Assembly - SMT-worlwide Production / Turnover - ratio of THT / SMT - Structure of productions cost (Parts, PCB-Assembly, Final Assembly, Investmen
Electronics Forum | Mon Dec 11 20:56:29 EST 2000 | Dave F
I'm with ya John. I'm afraid I'm in brain lock on picturing the situation, mostly because of my bias against waving second side MELF. I know people do it, but we've never had good luck. It would be good if we could have a clear process flow to hel
Electronics Forum | Tue Dec 12 08:44:27 EST 2000 | Wolfgang Busko
Another theory just developed in this very moment is that the glue did for what reason ever become "liquid" to a certain degree allowing gravity to do what gravity normally does but only to a certain point where this bubble-gum-like state stopped ( w
Electronics Forum | Thu Dec 07 15:51:02 EST 2000 | gsubbert
We have an old Blue M temperature chamber. We have no manuals for it and no information on how to make the cams to get the temperature profile that we need. If anyone has any information and would be willing to share it with me I would appreciate it.
