Phil Allison wrote:


TO220 outputs can usually be replaced by 2N3055Ts and MJ2955Ts
with advantages in power dissipation and current ratings.



** Should be MJE3055T and MJE2955T.

70V, 10A, 75W, Hfe=100 typ and Ft well over 2MHz.

Not too shabby for a low cost, garden variety part.



..... Phil