Behold, Pete KE9OA signalled from keyed 4-1000A filament:

snip

The AD607 is a very fine
pitch part (.0267 pin to pin spacing), and it isn't easy to mount
without using a stereo microscope to check the connections. A very fine
soldering tip is required, with .010 size solder.

EEEEP! I don't like SMD myself, but in the shop we did those with dabs of
solder paste on the pads, add part, stick heatgun over the whole kaboodle
and let the hydraulic action actually pull the part in perfect alignment
on the pads :-D

--
Gregg
*It's probably useful, even if it can't be SPICE'd*
http://geek.scorpiorising.ca