Probably the package would need to be over 1cm tall to withstand that. (I think that the electric power guys get "30kV/cm" etched into their brains - the field

Probably the package would need to be over 1cm tall to withstand that. (I think that the electric power guys get "30kV/cm" etched into their brains - the field strength at which sparks start to fly between conductors separated by air.)