Patent ID: 6686827
Filing Date: 2004-02-03
Classification: H01C

Abstract:
A surface mountable laminated circuit protection device, comprising:a bottom electrode layer comprising a first unit and a second unit; wherein said first unit and said second unit are separated and insulated from each other; a strengthened insulating layer disposed on said bottom electrode layer; a first conductive layer disposed on said strengthened insulating layer; a first conducting mechanism for electrically connecting said first conductive layer and said second unit of said bottom electrode layer through said strengthened insulating layer; a composite electroplated layer containing carbon black and disposed on said first conductive layer; a first conductivity composite material layer having PTC characteristics, disposed on said composite electroplated layer and jointed with said first conductive layer by means of said composite electroplated layer containing carbon black; a top electrode layer disposed on said first conductivity composite material layer having PTC characteristics; and a second conducting mechanism penetrating through said first conductivity composite material layer having PTC characteristics and said strengthened insulating layer for electrically connecting said top electrode layer and said first unit of said bottom electrode layer.