I created and have used the following table for years and all my qualified
fabricators indulge me as I use only these glass styles and resin contents
with the rules indicated as no 7628 use but when "sandwiched" between more
resin rich types. Caveats worked out concurrently but when done, my master
drawing notes require, as an example, TDR correlation with X-Sections and
the materials required in the construction on the master drawing.
I have other tables of similar nature and my master drawing notes. Some of
you asked for them and I'm offering them again if you ask off line,
MooMan
TABLE I
Core Chart For Dimensional Stability,
MLB Laminate Integrity, And Impedance Control
REQUIREMENT
PREFERRED NOT PREFERRED
PREG THICKNESS/" GLASS STYLE/% RESIN - SINGLE PLY
0.0020
106 (70%)
0.0025
1080 (65%)
0.0040
2113 (58%)
0.0050
2116 (53%)
0.0070
7628 (43%)
DIELECTRIC THICKNESS/" GLASS STYLE - MULTI PLY
0.005 106, 2113 1080,1080
0.006 1080, 2113 106,106,106
0.007 1080, 2116 7628
0.008 2113, 2116 2113,1080,2113
0.009 2116, 2116 1080,2116,1080
0.010 2116, 2116 1080,2116,1080
0.011 2113, 1080, 2113 106,7628,106
0.012 1080, 7628, 1080 2113,2113,2113
0.013
2113, 7628, 2113 7628,7628
0.014 2113, 7628, 2113 7628,7628
0.015 2113, 7628, 2113
0.016 2113, 7628, 2113 or use 2116,7628,2116
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