Abstract: A dielectric ceramic composition consists essentially of 80 to 99.7 wt % of a main component of a system, SrTiO.sub.3 -PbTiO.sub.3 -CaTiO.sub.3 -Bi.sub.2 O.sub.3 -TiO.sub.2 -SnO.sub.2, at least one oxide of rare earth elements incorporated therein as an additive in an amount of 0.1 to 5.0 wt % in terms of Re.sub.2 O.sub.3 (where Re is at least one rare element selected from the group consisting of Nd, La, Ce, Pr and Sm), and 0.2 to 15 wt % of a vitreous component. The main component consists essentially of 20.0 to 50.0 wt % of SrTiO.sub.3, 8.0 to 37.6 wt % of PbTiO.sub.3, 3.2 to 33.9 wt % of CaTiO.sub.3, 4.4 to 35.2 wt % of Bi.sub.2 O.sub.3, 2.5 to 13.6 wt % of TiO.sub.2 and 0.2 to 12.0 wt % of SnO.sub.2. The vitreous component consists essentially of 10 to 45 mol % of Li.sub.2 O, 5 to 40 mol % of at least one oxide selected from the group consisting of BaO, MgO, CaO and SrO, 0.2 to 10 mol % of Al.sub.2 O.sub.3, 30 to 70 mol % of at least two oxide selected from the group consisting of SiO.sub.2, MnO.sub.

Abstract: Disclosed herein is resistive paste containing conductive powder, which is composed of iron oxide, ruthenium oxide, lead oxide and zinc oxide, glass frit, and organic varnish. The conductive powder contains 10 to 25 atomic percent of iron oxide in terms of Fe atoms, 25 to 34 atomic percent of ruthenium oxide in terms of Ru atoms, 25 to 34 atomic percent of lead oxide in terms of Pb atoms, and 10 to 25 atomic percent of zinc oxide in terms of Zn atoms. According to this resistive paste, it is possible to obtain a resistor with small sliding noise at a low cost.

Abstract: Disclosed is an energy-trapping-by-frequency-lowering-type piezoelectric-resonance device utilizing a higher harmonic in the mode of thickness-extensional vibration, in which at least three electrodes for energy trapping are arranged so as to be overlapped with each other in the direction of thickness of layers of piezoelectric material forming a plate-shaped body. The three electrodes comprise a pair of outermost electrodes and at least one inner electrode. The diameter of one polygonal side of at least one outermost electrode is made larger than the diameter of one polygonal side of an inner electrode.