A multiple die package for integrated circuits is disclosed. An insulator
layer is provided and one or more vias are formed within it. The
insulator may be provided without vias, and vias formed later. At least
one integrated circuit is provided and electrically coupled to at least
one lead of a first leadframe overlying one surface of the insulator
layer. At least one second integrated circuit is provided and
electrically coupled to a second leadframe overlying a second surface of
the insulator layer. Electrical connections between the two leadframes
and the first and second integrated circuits are made through the
insulator, at selected locations, by coupling at least one lead of the
first and second leadframes one to another. The leads of the first and
second leadframe may be physically coupled by a welding process within
vias in the insulator. A removable storage card package is also
described.