Electronics Forum | Fri Dec 08 18:37:01 EST 2000 | Dave F
Asymetry in heating or mechanical forces are the primary reasons for tombstoning regardless of the reflow method. [There's beaucoup of background in the fine SMTnet Archive on reflow tomstoning.] Your situation is curious, but at least you know why
Electronics Forum | Wed Dec 06 19:58:54 EST 2000 | Dave F
We will say some novenas for you. IPC Standards are very easy to find at the IPC website, www.ipc.org International Organization for Standardization standards are very easy to find at IOS website, www.iso.ch/ Registrars for ISO certification are at
Electronics Forum | Thu Dec 07 16:24:45 EST 2000 | Travis Slaughter
It sounds to me you have what I had it has been a few years though so things are a bit foggy. Grey in the hole seems like they tended to be plugged not just coated, and the blue ring around (I never did find out what that was). Is your board punched
Electronics Forum | Tue Dec 05 20:33:04 EST 2000 | Dave F
Plaaaatttt!! [you can see it if you make like you're responding to it] So much for that ... In words, its a star with five arms. * At 9 - two dots side by side * At 12 - two dots, one under another * At 3 - two dots side by side * At 5 - two
Electronics Forum | Wed Dec 06 13:47:15 EST 2000 | JAX
Nick and Dave, Did I miss the question? What does it matter what pattern the glue dots are in, whatever vision you use will have to read the individual dots anyway. If your glue machine is any good you should be able to get away with simply
Electronics Forum | Mon Dec 04 16:35:48 EST 2000 | Steve Thomas
Anyone have a source for nozzles for this system? I know that Metcal bought OK Industries, and I've also been informed that Metcal sold the line to someone else, but I don't know who it was. Any clues guys? Maybe it's not worth pursuing? I've bee
Electronics Forum | Wed Dec 06 22:56:50 EST 2000 | Brad Kendall
Steve, Metcal can still provide some of these nozzles. I represent Metcal in Michigan and have a few customers still using the FCR system. They have purchased some new nozzles, but I also have an old demo unit with a large assortment of demo nozzle
Electronics Forum | Wed Dec 06 22:57:23 EST 2000 | Brad Kendall
Steve, Metcal can still provide some of these nozzles. I represent Metcal in Michigan and have a few customers still using the FCR system. They have purchased some new nozzles, but I also have an old demo unit with a large assortment of demo nozzle
Electronics Forum | Sat Dec 02 12:03:40 EST 2000 | Jamey Butteris
If you put a 6v battery on a 12v solar panel, it will charge the battery. It will also overcharge the battery and may damage the plates if you leave it on too long. The 'float' voltage for a lead acid battery (6v) should not exceed 7.2 volts for exte
Electronics Forum | Sun Dec 03 20:49:40 EST 2000 | Kel
The point is to charge the battery during the day, then completelty drain it at night by use of a light sensor.. I thought that due to the low current of the solar panel it wouldnt be a problem if i used a 6 Volt battery.. do i hook + to - or + to
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