>
>     When I designed the PCB I was thinking in using this transistor to
>switch a lower current device, but the client decided to use this hi-power
>solenoid, this is where my problem started. I would like to add a BC548 to
>drive the TIP41, but I don't want to mess with the PCB. The TIP41 have HFE
>(about 15 at 3A), so I'm thinking in replacing it with a high gain power
>transistor (maybe a darlington one?) or a FET. What parts would be a good
>suggestion?

A darlington would work well, as would a Sziklai pair, if you can find it.
You'd have to think upside down with the Sziklai though.

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