Electronics Forum | Tue Mar 14 21:22:41 EST 2000 | Dave F
Bingo!!! By panelizing and adding breakaway rails (as Nancy says), Stuart can pour copper up to his board fab's tolerance from the board edge. Traditionally, he just wants to make sure no copper shows on the edge of the board. Then again, it's his
Electronics Forum | Tue Mar 14 21:22:41 EST 2000 | Dave F
Bingo!!! By panelizing and adding breakaway rails (as Nancy says), Stuart can pour copper up to his board fab's tolerance from the board edge. Traditionally, he just wants to make sure no copper shows on the edge of the board. Then again, it's his
Electronics Forum | Fri Jan 13 13:45:24 EST 2006 | russ
AlphaMetals also performs this for free if you are a customer. I would ask your supplier how they feel about you using another product so you can take care of this. That usually gets the cost waived. There is not a lot of qualification required
Electronics Forum | Wed Aug 22 12:17:54 EDT 2001 | wbu
Mugen, well, your offer of lemon pie for pudding ... even in the way it is anounced to be served ... was well received here. We might look forward to a date for this dinner, having a bit of small talk about technical issues, the way problems are to
Electronics Forum | Fri Jul 07 09:15:23 EDT 2000 | K. Chak
Hi Dave, This particular p/n calls for print&etch for wet process..and the problem occured due to surface contamin. with resist residue resisting copper from etching off. The high pressure nozzle was a problem at developing oper. and it is fixed now
Electronics Forum | Fri May 22 10:41:54 EDT 1998 | Cunli Jia
| When you say "digital form" do you mean digitized like a jpeg format or a big ol' pile of electrons like a *.doc format? Anything that is already on disk will be fine. It will be ideal if the whole article is already in .cfm with reasonably sma
Electronics Forum | Sun Nov 30 08:53:15 EST 2003 | davef
IPC-6012A finds "circuit repairs" as acceptable in Class 1, 2, and 3 only "As agreed by user and supplier." So, it is your call, basically. Generally these repairs, if done properly, are reliable. See IPC-7721, 5.2.3, for conductor repair by welding
Electronics Forum | Mon Jul 16 21:39:40 EDT 2001 | davef
The method you suggest is about the only way to �clean-up� this terrible situation. Realistically, this is a "memory" type condition induced by design, build symmetry, "cross ply construction", excessive cool down rates during lamination or reflow a
Electronics Forum | Tue Mar 26 23:26:35 EST 2002 | ianchan
Hi Guys, (Note: We are not talking about bill-board RES/CAP, we are talking about Z-axis slant/tilted RES/CAP with respect to the PCB pad Z-axis plane). 1) We ref through the IPC-A-610C specification "bible", and can not find a "chapter/verse" tha
Electronics Forum | Tue Jan 22 20:32:08 EST 2002 | davef
Oooo, thanks for the conversion. Being metrically challenged, az a skratchin ma haid thar fer a mite. We do a G-10 160 thou and have similar issues. Now, we�ve talked about barrel fill [ie, slowing belt speed, increasing pre-heat temps, etc] befor
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