Mr. Land wrote:
Any chance this is a Maxim DG 307AAP ?

On Jul 1, 4:02 am, Kenneth Porter
wrote:
http://sewingwitch.com/ken/pics/307AAP3.jpg

Text reads:

QTC
307AAP3
9622G

I'm guessing the QTC is Fairchild Opto so this is probably some old
optocoupler.

I went to Mouser and searched 307AAP3 and got nothing.
On QTC I got mostly these guys,
http://www.mouser.com/phoenix.
One piece that came up was http://www.mouser.com/fairchildsemi,
and this was an opto device, but a sensor only.
Being a through hole device probably puts it at '96 or older, since
surface mount has taken over, so at 12 years this may be a junk/surplus
part and not even on any major site. Get some 20 year old data books and
you might find it.
Good luck,
Bill Baka