[sdiy] 7905 regulator "metal package"?

[Oren Leavitt]

cs e wrote:
> I've got a mc7905ck "-5V" reference IC here, its the wide "metal
> package" version.  I cannot find a datasheet for this package type!
> 
> I assume that the "metal case" itself is Ground, but I don't know
> which pin is input and which is output.  I am afraid to "test it" and
> destroy the device - because it is the only one I have right now and I
> need to use it soon (can't wait to order another one).
> 
> Any help?  If I wire it up backwards will I destroy it?

-5 volt 1A regulator in TO-3 case
The metal case is the Input, pin 1 is Ground, pin 2 is Output

bottom view

     -
    /O\
   /   \
  /o   o\
| 1   2 |
  \     /
   \   /
    \O/
     -

- Oren