These dielectrics are mixed with organic materials, such as organic resins and solvents, to form a screen printable paste. [0020] A suitable high temperature dielectric paste comprises 20.0 parts by weight of alumina powder having a median particle size of about 40 microns, 16 parts by weight of an organic vehicle and 0.2 parts by weight of lecithin. [0021] The prepared metal support and the lamin