The K3 needs the gold flash coating so that the pushbuttons work reliably. That's probably why it uses ENIG.
Al N1AL On Sun, 2009-07-26 at 02:00 -0700, Brett Howard wrote: > I thought the RoHS compliant stuff that Elecraft is doing was all in the > ENIG process. I've ordered a K1 and a K3 since RoHS and all the boards > are ENIG. Perhaps for the W1 they are using IMAg? > > I should explain: > ENIG = Electroless Nickel Immersion Gold (or gold pads) > or > IMAg = Immersion Silver (or silver (whiteish) pads) > > For the record both have their pluses and minuses such as the IMAg is > more susceptibile to oxidization and other cleaning issues (cleaning > when the boards are made) where as ENIG is usually less often plagued by > cleaning issues however contamination in the process can lead to whats > referred to as black pads. ENIG costs a little more and is generally > accepted as slightly "better". Probably mostly because of the higher > cost. ;) > > ~BTH > > On Sat, 2009-07-25 at 19:52 -0400, Don Wilhelm wrote: > > David, > > > > I believe that is one version of the RoHS compliant solder pads. > > > > 73, > > Don W3FPR > > > > David Heinsohn wrote: > > > I just started working on the W1. So I just really looked at the > > > circuit board. I noticed that the pads seem to be white rather than > > > silver or gold. So all you bright folks can tell me what's different > > > and why. I assume that this is a new and better way to produce a > > > board. It certanly takes solder OK. > > > > > > TNX > > > de > > > KD0R > > > David > > > > > > > > ______________________________________________________________ > > Elecraft mailing list > > Home: http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/mmfaq.htm > > Post: mailto:Elecraft@mailman.qth.net > > > > This list hosted by: http://www.qsl.net > > Please help support this email list: http://www.qsl.net/donate.html > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
