Reply by Robert Baer ●March 24, 20182018-03-24
pcdhobbs@gmail.com wrote:

> On Semi CPH3910. Lower capacitance by about half, lower noise by about 1 dB, but a somewhat inconveniently high I_DSS (40 mA). That means you can't usefully run them at 0V D-S. On the plus side, the zero drift point is within the minimum-noise region.
>
> Cheers
>
> Phil Hobbs
>

   Thanks.
Reply by ●March 20, 20182018-03-20
On Semi CPH3910. Lower capacitance by about half, lower noise by about 1 dB, but a somewhat inconveniently high I_DSS (40 mA). That means you can't usefully run them at 0V D-S. On the plus side, the zero drift point is within the minimum-noise region. 

Cheers

Phil Hobbs
Reply by Robert Baer ●March 20, 20182018-03-20
   They seem to be unobtainium out of stock end of life jump in the lake.

   Any current production replacements?
   Why not a GP randumb JFET?