| 摘要 |
<p>Ceramic dielectric compositions comprising barium titanate, niobum pentoxide, cobalt oxide, and manganese carbonate, said compositions having a dielectric constant of between about 3,000 to 4,000; dissipation factors of below about 1.8%, insulation resistance times capacitance products of about 10,000 ohm-farads at 25 DEG C and above 1,000 ohm-farads at 125 DEG C and stable temperature coefficient characteristics. In one embodiment, the dielectric constant of the present invention does not vary by more than +/- 15 percent over a temperature range of -55 DEG C to 125 DEG C.</p> |
