Dielectrics are non-conductors and these plating finishes
are part of the conductors. I can't see how this question
can pertain to plating finishes.
Thank you,
Eddie Rocha
South Bay Circuits
I am posting this ? for a colleague:
"We are fabricating some boards for a customer that will be
1 oz of copper
on Duroid 6010. They are considering two surface finishes:
HASL (Hot Air
Levelled Solder) and 150u" Nickel under 5-10 u" Gold.
The question they are asking is as follows: What are the
dielectric
properities of the Nickel/Gold finish vs. those of the HASL
finish.
Does anyone know the answer? I figured that the insulating
material (the
Duriod) and the conductor thickness (copper) would have the
largest
influence on dielectric performance and that the surface
finish would have a
negligible impact on performance. Is this true?"
Thanks!
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