Sony-STR3800L. Output transistors.
The output transistors on this amp have failed on one channel. They are:
2SD531. NPN. 50-60V C-E. 5A Max collector current. (TO-220C)
2SB521. PNP. Similar values to the above.
What would make a good substitute? I can find datasheets on these, but no actual parts.
The drivers have also failed, these are available.
Some have suggested a TIP41/42. The only thing that bothers me is these have a Transistion Frequency of 35Mhz. The 2SD531 is 8Mhz...
I don't want a short lived high power oscillator!
Thanks for any help. SJM.
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