Low noise dual BJT

[hcpower]

Hey DIYA's.
I'm in the search of low noise dual BJT's like MAT2/3, SSM2210/2220 ect...
The newest lineup seams to be MAT12 or SSM2212, both NPN.
Is there a PNP counterpart in production for one of the above?
I've searched the net, but can't find a direct hit.

Best regards

 

[mlloyd1]

There are some duals in the BC8xx series.
I don't know if they are very low noise parts; never used them for that specifically.
I hope you like SMT.

 

[mlloyd1]

took a look at a spec sheet, so well, I guess they are low noise.
hope that helps!

 

[Mark Tillotson]

Unfortunately an adjective is not a specification! nV/√Hz and pA/√Hz numbers would be good to see, together with their graphs against frequency.

 

[hcpower]

It would be fun to make a PCB draw of the Elektor preamp and build, that's why I'm asking. I've got all parts except for the diff-stage pair. I've looked at THAT340 but don't like the low beta from these compared to MAT02/03

 

[Ultima Thule]

@hcpower if your concern is low noise you might consider the following, if I recall this correctly, a dual LTP input has higher total contributed noise compared to single LTP. Although the symmetry looks aesthetically pleasing to the eyes there is barely anything advantageous about it, not even the very best low noise opamps usually don't utilize dual symmetric LTP input stage.

You could rework that Elektor circuit by skipping the p-type LTP and its CCS, and then tie up T7 as a CCS, something like that.