Hi The gotcha with *any* SMT part is that stress / strain from the soldering process gets into the performance of the part for a *long* time. There is no mechanical “buffering” in most parts. Whatever the PCB does is what the guts of the part sees ….
Given the popularity here on the list of hand soldering SMT parts, that’s a very high stress way to mount them …. yikes …. Bob > On Sep 29, 2020, at 5:55 PM, John Moran, Scawby Design > <[email protected]> wrote: > > Final input from me on this topic. > > The surprising, to everyone, result from the research paper referenced in the > eevblog - > > https://www.eevblog.com/forum/metrology/long-term-stability-of-temperature-sensors/?action=dlattach;attach=412153 > > Was that the cheapest thermistor had a drift of less than 0.5mK/year. > > It is the Murata NCP15XH103D03RC and is available from Mouser for 41c. Create > a cluster of these and you have your low-drift reference. > > John > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
