Replacements for audio path through hole transistors are getting hard to find:
The KSA992 and KSC1845 transistors are common replacements for many small signal BJT through hole transistors where low noise and high gain are more important than medium or high current. For super-low signals (think...
I'm preparing an order which includes the KSA992F and I'm wondering how many I should order to ensure I can find a matched pair. Also, if you could point me in the direction of how to go about matching them, that would be helpful.
I am in the midst of rebuilding the Protection circuit and discovered I didn't order replacements for Q5, 2SA733; and Q3 & Q4, 2SC945. None of the lists I have downloaded suggest replacing these 3 transistors. Is this because they do not have a history of problems or failure?
I have replaced...