Electronics Forum | Wed Dec 05 20:58:21 EST 2012 | davef
Look here IPC-TM-650 2.3.25 [http://www.ipc.org/4.0_Knowledge/4.1_Standards/test/2-3_2-3-25-1.pdf ]
Electronics Forum | Wed Oct 16 13:16:11 EDT 2002 | davef
Hey Mar, Sounds serious!!! Poke around Buehler, Leco, or Struers Try IPC TM-650 Test Methods Manual: 2.3.6A Etching, Ammonium Persulfate Method - 7/75 2.3.7A Etching, Ferric Chloride Method - 7/75 2.3.7.1A Cupric Chloride Etching Method - 12/94
Electronics Forum | Fri Sep 30 12:10:28 EDT 2005 | vikkaraja
Firmware version is 2.3.2d.
Electronics Forum | Wed Aug 18 02:17:37 EDT 2010 | tennythomas
I heard that one can create the stacked/staggered microvias in the layers 1-2 & 2-3 and skip microvia in the layer 1-3 of 6 layer stack up, when the prepreg is between layers 1 & 2 and the other prepreg is between the layers 2 & 3. I want to know w
Electronics Forum | Thu Apr 10 07:27:34 EDT 2003 | pjc
Where is the 2 - 3 perc? On the SMC placement machine only or througout all your processes?
Electronics Forum | Mon Sep 25 12:35:49 EDT 2006 | jdumont
1000 Lumen per meter squared minimum per J-Std-001D 4.2.3
Electronics Forum | Wed Jan 17 03:43:11 EST 2007 | aj
2-3mmm from edge of component
Electronics Forum | Tue Jul 19 10:23:55 EDT 2011 | rway
This won't help much. At most it may give him a 2-3 board buffer, then what?
Electronics Forum | Wed Jan 31 15:25:03 EST 2018 | dontfeedphils
I like a 1mm circle with a 2-3mm mask relief around it.
Electronics Forum | Fri Aug 28 09:27:08 EDT 2020 | serge_pirog
After 2-3 cycles error disappear.
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