Up to what level of voltage can be used at the switch section of a photorelay?

A voltage to be used should be at a level below the value for OFF-state output terminal voltage VOFF. Since this is the absolute maximum rating, a state in which it is exceeded even only once must be prevented. For a working voltage, Toshiba recommends up to approx. 80% of the VOFF value. The specified VOFF value is written in the technical documents.

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