Yes, it passes almost instantly.

I see little point in trying to save most sophisticated electronics since they will be of little use without supporting infrastructure. Probably little point in saving computer data since it is of little uses without computers and electrical infrastructure.

I would try to save the simpler types of LED flashlight and some basic radio broadcast receivers. Radio transmitters would almost certainly be destroyed by an EMP event, but I believe that TPTB have emergency transmitters stored for just such an emergency.

Remember that modern lithium rechargeable cells need sophisticated electronic chargers, that in turn need electrical input.
The future after an EMP event is going involve a great deal less electricity, with wet leclanche cells, flooded lead aid batteries, and zinc carbon dry cells largely replacing more modern types.