The same nickel plating effect gets into a lot of things. If you are shopping
low IMD connectors, nickel plating is out. Things get non-linear (to a very
degree) when it is present. If -180 db is the goal for those spurs, you might
hit -120 db with the nickel connectors …..
> On Feb 22, 2018, at 9:15 PM, jimlux <jim...@earthlink.net> wrote:
> On 2/22/18 12:29 PM, Leo Bodnar wrote:
>> Here is ENIG fact that is not widely known at the moment but which some
>> might find useful.
>> I could not understand why I get better TDR and insertion loss results from
>> solder-mask covered microstrip transmission lines than from otherwise
>> identical microstrips on the same substrate with soldermask removed and,
>> therefore, covered with ENIG.
>> Gold can't be bad, right? As it turns out, even gold coin has two sides to
>> I have found that Shlepnev and McMorrow conducted extensive research and
>> published data, some of which is presented here
> the ever useful http://www.microwaves101.com/ site has an excellent
> discussion of this under the "skin effect" heading.
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