Greetings, group. I'm repairing some boards that have a small voltage
regulator in one corner (designated "VR1"), TO-92 package (like a
typical small signal transistor) which I'm having trouble identifying.

The device is marked like this:

SiLA
8
XXXX

(where XXXX is a 4-digit hexidecimal date or batch code, varying
between devices, wheras "SiLA" and "8" are always the same)

First off, anyone know what manufacturer has logo "SiLA"? I can't find info
on this.

Secondly, how in hell can I trace a part with part number "8"???
Come on, mfg.... "8"??? "8"??? Surely you guys can think of a more
unique part number than just "8"??? Sigh. Maybe it's supposed to be
an 8V regulator? Seems to be putting out about 20V, though.

Could be something like a 78LXX, but may be completely different.
Pin 1 is connected to what I'll call A+ (100-300VDC). Pin 2 seems
to be the output. Pin 3 is connected to the center point of a resistive
voltage divider from Pin 2 to ground (Vref?). When powered up
on test bench I'm getting V(pin1)=200VDC, V(pin2)=18VDC,
V(pin3)=20VDC. Might be a 20V regulator.

Anyone have any clues what this is? (I need to buy some, because
these seem to burn out frequently on these boards.)

--
Cheers,
Robbie Hatley
hatley [[dot]] software [[at]] gmail [[dot]] com