[sdiy] 2n3904 transistor matching stats

[John Speth]

> These are bog-standard 2N3904's from Digikey, tested with the standard
> moog test schematic and read with a Fluke.
>
> #  - V measured
>
> 1  - .562
> ~
> 1  - .567
> ~
> 1  - .587
> ~
> 1  - .590
> 1  - .591
> 1  - .592
> ~
> 3  - .595
> 13 - .596
> 71 - .597
> 34 - .498
> 13 - .599
> 16 - .600
>
> Seems like out of 156 transistors, almost half match up within 1mV and
> most are within 5mV. But it seems like some are definitely outliers.

That is golden data.  Thanks.  Do you know when your transistor die were
manufactured?  It would be most interesting to compare your results with a
batch made 25 years ago.

JJS