Siemens W295b

Hi guys!

Is there replacement for old sitral transistor SST117,SST116

and BCY66,BCY58!?

Thanks....

I've got a bunch of Siemens Sitral gear and successfully used the following substitutions:

SST117, SST116 - 2N2219A (which also has the advantage of being a mil-spec part, and hence should still be around for some time)
BCY58, BCY66 - BC109C, BC109B (for metal-can, if you swing that way), or BC550B, BC550C (slightly easier to obtain these and they are also cheaper and can be lower noise depending on your source)

And the performance was identical to within the limits of what I could measure and hear.

Be sure to re-bias the stages however after the substitution, as the biasing will slightly change with this parts replaced.

Thanks a lot man!

I will try this substitutions....


Cheers...