Patent ID: 8097552

Claim:
A dielectric ceramic, comprising: barium titanate; magnesium, a molar ratio of the magnesium to the barium in the dielectric ceramic is in a range of 0.01 to 0.06; yttrium, a molar ratio of the yttrium to the barium in the dielectric ceramic is in a range of 0.0014 to 0.06; manganese, a molar ratio of the manganese to the barium in the dielectric ceramic is in a range of 0.0002 to 0.03; tantalum, a mass ratio of the tantalum to the barium titanate is in a range of 10.4 to 26.1 parts by mass of Ta 2 O 5 with respect to 100 parts by mass of the barium titanate; and a plurality of crystal grains comprising the barium titanate as a main component, wherein boundaries of the crystal grains are located between or among the crystal grains, and wherein an average diameter of the crystal grains is in a range of 0.05 μm to 0.2 μm.