[sdiy] What do people use for matched transistors these days?

Paul Glass-Steel pfglasteel at gmail.com
Sun Sep 10 01:21:53 CEST 2023

I’ve had good results with those too.

On Sat, Sep 9, 2023 at 4:20 AM Mike Bryant <mbryant at futurehorizons.com>

> Nxperia also do dual transistors without the base resistors e.g. BC856S.
> They are on the same die so will be well matched.
> ------------------------------
> *From:* Synth-diy <synth-diy-bounces at synth-diy.org> on behalf of Scott
> Bernardi via Synth-diy <synth-diy at synth-diy.org>
> *Sent:* 09 September 2023 00:33
> *To:* SDIY List <synth-diy at synth-diy.org>
> *Subject:* [sdiy] What do people use for matched transistors these days?
> Right now I'm looking at matched pnp's, suitable for a VCO.  Something
> like the THAT-320 quad pnp would be ideal, but they are kind of pricey. The
> quad is nice because you have an extra matched transistor you can use for
> high frequency tracking adjustment.
> I ordered some BCM856's to see how they will pan out.  I think the VBE
> match will be good enough, I'm wondering about the base resistance that
> causes deviation from ideal log conformance.
> For npn's, THAT-300 or MAT14 are the best, also pricey.
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