[sdiy] MPF102 replacements

[Dan Snazelle]

I wonder why they are phasing out so many good VCO fets!

Sent from my iPhone

On Sep 11, 2011, at 2:10 PM, David G Dixon <dixon at mail.ubc.ca> wrote:

>>> 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.
> 
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