[sdiy] Forget the OTA, find me a CDTA!

[Steve Lenham]

On 07/05/2013 11:12, Uwe Schueler wrote:

> I still have  2 reels = 6000pcs of BC846BDW1T1 (dual npn in SOT-363)
> thanks to ebay the price for all of them was lower than for 1 pcs. of these
> obsolete vintage matched duals ! So I'd like to make a small DIL module
> with
> 2..4 of them + 0805 NTC on the top side an some 1206 heating resistors
> on the back side. The remaining problem is how to select them ? :) But
> that's a new topic...

Good idea - I keep thinking of doing something along those lines (and 
not getting round to it!).

Makes me wonder: if one were to parallel multiple examples of your 
standard BC846s, what would be the effect on the overall matching? Would 
it improve and, if so, by how much?

Cheers,

Steve L.