[sdiy] low rbe tranies?

[James Patchell]

Bulk resistance does seem to be one spec that is generally missing from 
transistors...since, for the most part, you are only interested in that 
parameter when using in log circuits, and discrete transistors are 
generally not considered useful for that.

Seems like I remember that the 2n4403 had low bulk resistance....but I am 
afraid the only way you will really know is to test them yourself.


At 12:15 AM 9/15/2003 +0200, Magnus Danielson wrote:
>From: "Jay Schwichtenberg" <jays at aracnet.com>
>Subject: [sdiy] low rbe tranies?
>Date: Sun, 14 Sep 2003 14:35:37 -0700
>
> > Does anyone know of some discrete transistors with low rbe that can be
> > matched for expo converters? Other than the temp issues this seems like a
> > good criteria for selecting expo transistors.
>
>The MAT-02 and other trannies in the MAT series is actually sold with that
>as a selling feature.
>
>Other than those... I don't know, but I do know that it is rarely given even
>in fairly well-detailed datasheets, but more indirectly. It would be
>interesting to discuss which other types of transistors which might be worthy
>of investigation, I am sure we can identify them and how to investigate it
>from datasheets and by measurements.
>
>Cheers,
>Magnus

         -Jim
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