Product Overview
These have been tested to the factory spec of under 500 ohms Ron. The yield is small, so they are more expensive.
Find slightly out of spec here:
https://smallbear-electronics.mybigcommerce.com/photocoupler-clairex-clm6000-s-o-s/
Find reasonably out of spec here:
https://smallbear-electronics.mybigcommerce.com/photocoupler-clairex-clm6000-o-s/