Help identifying a Motorola transistor (in HP 7908 PSU)

[David Comley]

> >
> >Partial help:
> >
> >"4-456" is probably a short version of the HP house
> number, 
> >the more complete number is likely "1854-0456".

Sounds plausible. 1854-0456 appears to cross reference
to a TIP41A which is NPN and a TO-220 package. I'd
expect to see an NPN device in the part of the circuit
where this is being used and the package matches
what's on the board.

Thanks !

Dave



	
		
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