[sdiy] Panels, Transistor replacement for Oberheim Mini-sequencer

[allenre at umich.edu]

Only $0.18 apiece from Mouser, I hope they will substitute.  I don't know enough
about the circuit to be able to tell, but I can always breadboard it and see
what happens.  Thanks for the info,

Ryan

> I just looked 2n4302 up in the Bible (Motorolla  Semiconductor Handbook, 
> 5th edtion), it is listed as an N-JFET, IDSS of 5mA, gate leakage 1nA, 30V 
> breakdown...closest equiv is 2n5457....not much info, but maybe more than 
> you had...I hope....
> 
> At 10:38 AM 4/14/2004 -0400, allenre at umich.edu wrote:
> >I discovered both of those.  I don't want to pay $2 apiece from AMS 
> >(especially
> >since 5 are needed for the project), and like you I'm unsure about the
> J202.
> >One problem is that I've been unable to locate a datasheet for the 2N4302.
> >
> >Ryan
> >
> > > Hi!
> > >
> > > Americanmicrosemi has the 2N4302 for slightly under $2 apiece.
> > >
> > > A search at Mouser for '2N4302' actually returns a choice between a 
> > Fairchild
> > > or Vishay J202 FET - I have *no* idea if that is a suitable 
> > replacement, but
> > > perhaps someone else on the list knows?  If so, that would be the way to
> go
> > > (40 cents apiece for the J202).
> > >
> > > Cheers,
> > > Scott
> > >
> > >
> > > -----Original Message-----
> > > From: allenre at umich.edu
> > > Sent: Apr 13, 2004 2:04 PM
> > > To: WeAreAs1 at aol.com
> > > Cc: "synth-diy at dropmix.xs4all.nl" <synth-diy at dropmix.xs4all.nl>
> > > Subject: Re: [sdiy] Panels, Transistor replacement for Oberheim
> > > Mini-sequencer
> > >
> > > You're right, that was a typo.  But what I'm saying is the same.  I
> can't
> > > find
> > > that part cheap and I would like to find an alternative.
> > >
> > > Ryan
> > >
> > > > << Also, building the Oberheim mini-sequencer looks like an
> interesting
> > > > project,
> > > >
> > > > but the 2N4032 transistor in it is obsolete.  What suitable
> replacements
> > > are
> > > >
> > > > there for this part? >>
> > > >
> > > > I don't have the Mini-Sequencer schematic handy right now, but are 
> > you sure
> > >
> > > > that it's a 2N4032?  Are you sure it's not 2N4302 FET?  That's a more
> > > common
> > > >
> > > > part number, and is one that Oberheim used on several products.
> > > >
> > > > MJB
> > > >
> > > >
> > >
> > >
> > >
> > >
> > > PeoplePC Online
> > > A better way to Internet
> > > http://www.peoplepc.com
> > >
> 
>          -Jim
> ***************************************************************
> http://www.oldcrows.net/~patchell
> 
> ***************************************************************
> 
> 
>