It is not at all uncommon for them to fill up with dust, > overheat, and die. Popping them open every 10 years or so to clean them out is > well worth the effort. > > Bob > >> On Mar 5, 2017, at 8:54 PM, Scott Stobbe wrote: >> >> Recently the fan in my 53131 has been making a pretty awful sound, so its >> time to replace it.

. >> >> It's even reworkable (e.g. you can soften the blob & solder and scrape the die off and bond a new one down). >> >> I suspect that there is a wide variation in the material you blob on there and so forth. >> >> >> >> >> >> >> _______________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to https:/

Hawkins -----Original Message----- From: time-nuts [mailto:time-nuts-bounces@febo.com] On Behalf Of Bob kb8tq Sent: Sunday, April 09, 2017 1:34 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] TAPR TICC boxed (input protection) Hi If anybody gets into this sort of thing in the future - There are black / optical blocking die

They > may issue the on die reset once and then the supply collapses all the flops > lose their reset state, but the IC dosen't try to reset again. > > Fortunately, you can buy a bunch of LDOs which include a small discharge > FET to help this case as well as others. >

But unlike a discrete sensor, you have the problem that they only contain a low resolution ADC on die (somewhere between 8 and 14 bit). If your goal is to measure temperature and report it with an accuracy of about 1°C, then these are the easiest to use sensors you can buy.

. > > While the "instruction rate" might vary with the needs of the moment and die temperature, there's usually some clock and corresponding counter that runs at a relatively constant rate so the CPU knows what time it is. > > That said, a 10 ppm (or even 50 ppm) oscillator in a PC would be "high performance" > > My macbook air shows 56.652 in ntp.drift >

The gotcha is that an IC is die coated and a MEMS oscillator likely is not. They should get packaged accordingly (= a low leakage package). Getting anything into a package at normal atmospheric pressure … not so much.

My bet still would be on a tool or die that was a bit past it’s “back to the shop for a touch up” point though. Bob > On Feb 14, 2019, at 11:18 PM, Bruce Griffiths wrote: > > NPT or BSPT pipe thread perhaps?

I blame the temperature hysteresis on the die attach to the lead frame which seems to be usually a silver filled epoxy compound. I hope that the hysteresis on a discrete zener is much lower. With best regards Andreas

. > > best regards > Frank > > > --- > Die Bundesliga hat begonnen! Alle Tore, alle Ergebnisse, alle News: Pocket Liga jetzt im AppStore oder Google Play Store herunterladen - kostenlos!