Dear Kirt,

it depends on the contact resistivity you can
tolerate. The resistivity between a metal pin and a
fresh ITO-coating was ok (for my application) but it
altered.

Do you need the transparency of pure ITO? If not, a
few nm of a noble metal helps with respect to
conductivity and alters the transparency not to much.
But keep in mind that a few nm of metal ontop if ITO
are not very durable. If you have to contact the same
position of your ITO many times, this approach won't
work.

Harald

> I am considering making a product in which ITO will
> have temporary
> connections made to it.
> Can connections via a probe card reliably be made
> directly to ITO, or should
> a pad material such as gold be used?
>     --Kirt Williams
>