[sdiy] Matched Transistor Specs
milesstevens89 at gmail.com
Tue Sep 1 10:24:48 CEST 2020
My experience with dual transistors is mainly the NXP BCM series, they are
incredibly handy for tight layouts in general, but I don't find them up to
snuff for an expo pair.
On Tue, 1 Sep 2020 at 14:50, Aa Bb <alfa.rpar.as at gmail.com> wrote:
> Dear Aaron
> For exponential circuit must be used transistors for wich some parameters
> (H21,...) are defined in conditions Ucb=0 V. Number of available
> transistors for such purposes is small.
> On Tue, 1 Sep 2020, 01:23 Aaron B., <aaron at zadzmo.org> wrote:
>> I've been looking at dual transistors for exponential circuits. If I'm
>> okay with surface mount, there seems to be a bewilderingly large number
>> of parts available.
>> Besides the maximum voltage/current ratings, what should someone look
>> for in a good exponential converter pair? Do any of the typically
>> published specs like Vceo, Is, beta, etc matter much in this use case?
>> Aaron B. <aaron at zadzmo.org>
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>> Synth-diy at synth-diy.org
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