[sdiy] MPF102 replacements

[David G Dixon]

> > Ken stone recommends these, in a link referring to alternatives for 
> > the
> > MPF102 in the VCO section of the Bi N tic filter
> >
> > . 2N4856: Alternate FETs include 2N4091, 2N4391, PN4091 
> 2N4391 PN4391 
> > PN4856, MPF108
> >
> > cheers,
> > Dave
> 
> I hate to say it (seriously. It's kinda frustrating.), but 
> all those transistors are either obsolete or are really close 
> to not being stocked anymore.
> Thus spake Mouser.

I think the PN4391 is pretty common, still.  I bought a pile of them a while
back.  However, I tend to use them exclusively for resetting sawcore VCOs.
I find that 2N5485 still works more reliably in other switching
applications.