Basic Transistor Replacement

[Bigkim]

I have 3 transistors that need replacement
Are my replacements correct?:


1- 2sa945 replaces with  2n2222


2- 2sd467  replaces with   ?


3- 2sb561 replaces with 2n3904


Thanks in advace....

[MadTux]

You can't tell that easy. Look at the schematic, on what the transistor is supposed to do and decide then.
Sometimes you can replace exotic transistors with simple ones, if they don't do exotic stuff (low noise, fast, high current....)
Sometimes you can't, if the designer used that transistor for a reason.
2SD467 for example has lower voltage, but higher current rating than 2N3906.
2SD467 IS NPN, 2N3906=PNP, big NONO
Pinout also doesn't match, either. But that can be fixed with a bit of fiddling ;-)

[Bigkim]

Thanks for that npn/pnp heads up, that was a transcription error.
 All these are used in a rc controller for the 3vdc motor