I have a small handful of these parts with a Motorola 'M' on them.
They are 3-legged, seeming to be a transistor or similar device (I
don't think they are voltage regulators). The case is plastic,
smaller than a 78M05 (T220?), especially since the metal thermal
transfer patch is integral to the body (not sticking up above the
epoxy like on a 78M05).
The markings are...
R927
S
AC823
I can't seem to find anything reasonable by googling Motorola and
either R927 or AC823. Does this sound familiar to anyone here?
Thanks,
-ethan