OK, I see in the wiki that 0.1" is by definition 2.54mm. I was taught it was 2.54001, but that's not right, either. But, if industry says that they're defined as the same, then I'm the one out of date. =) I wonder what was with that old prototype board. I can't find it, so it must be in a landfill, but it was just exactly the wrong size to fit a chip. You could get the first few pins in, but then the differences would be enough that no more would fit.
Bob ----- Original Message ----- > From: Orin Eman <[email protected]> > To: Discussion of precise time and frequency measurement <[email protected]> > Cc: > Sent: Monday, June 24, 2013 11:35 PM > Subject: Re: [time-nuts] OT Prototype Boards > > 0.1" is 2.54mm by definition these days. > > See: http://en.wikipedia.org/wiki/International_yard_and_pound > > Now whether the board really is 2.54mm is an entirely different matter... > if it is, you should be fine with 0.1" pitch chips. > > Orin. > > > > On Mon, Jun 24, 2013 at 9:10 PM, Bob Stewart <[email protected]> wrote: > >> I need to get some largish prototype boards for my project. Has the >> industry standardized on a 0.10" pitch for hole spacing? IOW, if the > ad >> says 2.54mm pitch will I get a board that will fit American chips, or will >> I just get something metric sized for the landfill? I ask, because > I've >> got a prototype board sitting around here someplace that is unusable >> because the pitch isn't quite right. Needless to say, I'm ordering > this >> from ebay from a seller in China or Hong Kong or someplace, points East. >> >> Bob - AE6RV >> _______________________________________________ >> time-nuts mailing list -- [email protected] >> To unsubscribe, go to >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. >> > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
