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Up to what level of current can be used at the switch section of a photorelay? Also, for a pulsed current or AC current, what happens?

A current to be used should be at a level of current below the value specified with “ON-State Current ION” for the absolute maximum rating in the technical documents. In addition, since derating by temperature Ta is applied to ION, the level may become equal to or lower than the above value. Care should be taken. Even for a pulsed current and AC current, a current must be used with a value not exceeding the value for ION with respect to both the current peak value and the current effective value.

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