Looking for SMT transistors that are equivalent to lost through hole

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saabracer23

Member
Joined 2006
#1
Hello all, it seems that most of the low noise, high gain through hole transistors are gone. The ones I like using when restoring old audio gear, like the 2SC2240BL and 2SA970BL. I of course use the KSC1845 and KSA992, but the available gain ratings are far lower.

I do keep on hand ZTX964B and ZTX795A devices, but I’ve read that while they are labeled low noise, they may not be as low as one would hope. Example being the 2SC945 and 2SA733 being lower noise. Would love to hear thoughts on the ZTX devices.

I’ve thought about going to SMT devices, I have a few hundred SMT adaptor/breakout boards and figured why not. Any suggestions as to what I should be looking at that would be a good replacement for the 2240 and 970? What about the 2SC2713-BL and 2SA1163-BL? Obviously they have lower power dissipation, but I’m looking to get as close as I can get.

Any other parts I should look at to replace long lost popular through hole parts?

Thank you,
Dan
 
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