[time-nuts] Replacement A9 boards for the HP 5065A

[Orin Eman]

On Sun, Mar 4, 2018 at 1:04 PM, Charles Steinmetz <csteinmetz at yandex.com>
wrote:

> So, no PTFE or PS for practical reasons.  That leaves us with PP, PPS, and
> perhaps PC.  These all have reasonably similar DA, so as long as one checks
> the particular capacitor's datasheet to verify, DA should not be much of a
> factor in choosing between them.
>


FWIW, WIMA are claiming 0.05% for their MKP 4 PP capacitors.  They
performed about the same as the original integration capacitor in my 3455A
DMM - and about the same as some Polystyrene I found online somewhere - at
the time intervals that the 3455A uses.