Use power transistor for TDA2030 audio amp?

Hi, folks Recently, I am attempting to make a Stereo Power Amplifier using two TDA2030A (datasheet source: I want an output of at least 25 watts per channel. The datasheet shows me that I need to add a pair of power transistors, BD907 and BD908 if I want my amplifier for higher power output. There are two circuits shown below and the one with the power transistors outputs more power. My question is this. Can I replace these BD907/908 with TIP35C and 36C , which are more easily available? I have purchased a transformer of 24V-0-24V, 80VA.

Is there anyone have ideas of it? Thank you in advance.

by Robertlee
August 26, 2021

1 Answer

Answer by vanderghast

Accordingly to the datasheets TTDA2030 and TIP35C, from their SOA, on page 3, shows that the latter seems a little bit better than the first one. So, electronically, that substitution seems safe. But otherwise, such as noise and other characteristic, that criterion alone is not enough, and I couldn't tell.

As for the link that you supplied, it seems to be a 404 error, in Chinese or Japanese. Sorry, I can't get any of the intended info.

+1 vote
by vanderghast
August 27, 2021

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