Hi The same nickel plating effect gets into a lot of things. If you are shopping for very low IMD connectors, nickel plating is out. Things get non-linear (to a very slight degree) when it is present. If -180 db is the goal for those spurs, you might only hit -120 db with the nickel connectors …..
Bob > 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 >> it. >> I have found that Shlepnev and McMorrow conducted extensive research and >> published data, some of which is presented here >> http://www.simberian.com/Presentations/NickelCharacterizationPresentation_emc2011.pdf > > the ever useful http://www.microwaves101.com/ site has an excellent > discussion of this under the "skin effect" heading. > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
