[time-nuts] Re: +1/f of transistors

[Richard (Rick) Karlquist]

When I was working on a cold atom Rb standard a few years ago,
I settled on the LT1028 with a 3.5 Hz (yes Hertz) noise corner and
noise floors of less than 1nV/sqrtHz and 1pA/sqrtHz.  GBP>50 MHz. 
Specified on the data sheet.  In production now for ~40 years!  I can 
remember when it first came out.

What's not to like about this?  Are low flicker discreet transistors 
still  needed?

Rick N6RK