29-09-2019, 09:55 AM
(28-09-2019, 08:09 AM)ppppenguin Wrote: The MAT was an improvement on the early grown-junction devices. Ultimately the planar process took over.
https://en.wikipedia.org/wiki/Alloy-junction_transistor
Also there are huge quantities of Russian ex-USSR Military Germanium transistors. They will work in any circuit for Germanium, of any type.
Power, AF, 60MHz, 400MHz etc.
Some RF ones I bought to replace AF117 seem to be Planar. I cut one open to see. The MAT have no advantage.
