An encapsulated miniature transponder device, comprising:
- an integrated circuit device, including:
- a silicon substrate forming a die having an integrated circuit formed in a surface thereof and including a metallization layer forming a first set of contact pads;
- an insulative layer covering the surface of said die including said metallization layer and having apertures therein exposing said first contact pads;
- and
- a plurality of second contact pads disposed over said insulative layer and contacting said first pads through said apertures;
- an antenna connected to said second contact pads;
- encapsulating means including a glass capsule hermetically enclosing said integrated circuit device and said antenna and a plastic container heat-shrunk about said capsule, the plastic container being of inert material suitable for use in a live body.