On Thu, 15 Oct 2009 18:41:03 -0700, Jim Thompson
wrote:

Are there any low current OptoCouplers rated (reliably) at somewhere
around 10-25uA, at 70ºC ?

Slo-o-o-o-ow is OK, status indicator only.

G-Job, but you'll like it ;-)

...Jim Thompson

OPIA411DTU is guaranteed 70% CTR at 50uA-- you could extrapolate for a
G-job. It's a Darlington, so it will be guaranteed to be slow.

You'll need to maybe double the input current from 25°C values for
temperature + aging.