In most recent apps, I've been using 2n2222's instead of 2n3904's since I=
 need=20
the additional current capacity.  The SOT-23's worry me for breadboarding=
=20
purposes.

The trend is that thru-hole is being dropped f/SMT components, so who's g=
oing=20
to step up to the plate and invent an SMT breadboard? ... and I don't mea=
n=20
having to solder the part to a carrier board, etc.

Cheers,
-Neil.


On Wednesday 18 June 2003 13:45, Spehro Pefhany scribbled:
> At 01:25 PM 6/18/2003 -0500, you wrote:
> >I heard they will be soon, but I thought it was TO-92, not specificall=
y
> > the metal-can (TO-5 ???).  Perhaps we're both right.  Not sure what a
> > suitable replacement will be, except it worries me that it may be SOT=
-23.
>
> I seriously doubt the P2N2222A will be discontinued anytime soon, but i=
f
> it is, in most cases you can just slap a 2N3904 or 2N4401 in there.
>
> The SOT-23 version is the MMBT2222A.
>
> (Of course MMBT stands for "Mad Max Beyond Thunderdrome", so it's easy =
to
> remember.)
>
> Other than hermeticity the main advantage of the TO-5 would be power
> dissipation and maybe higher max Tj. For that you maybe could substitut=
e
> the PZT2222A which is more comparable. SOT-223 package.
>
> Best regards,
>
> Spehro Pefhany --"it's the network..."            "The Journey is the
> reward" speff@interlog.com             Info for manufacturers:
> http://www.trexon.com Embedded software/hardware/analog  Info for
> designers:  http://www.speff.com

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