The invention provides electronic parts which comprise a composite dielectric layer composed of an organic insulating material and a dielectric ceramic powder having a larger relative dielectric constant than the organic insulating material, and which also comprise conductive element sections forming inductor elements, etc., wherein the organic insulating material comprises a cured resin obtained by curing reaction of an epoxy resin with an active ester compound obtained by reaction between a compound with two or more carboxyl groups and a compound with a phenolic hydroxyl group. The dielectric ceramic powders of the described electronic parts have larger relative dielectric constants than the organic insulating materials, and the organic insulating materials have low dielectric loss tangents. It is possible to adequately reduce time-dependent dielectric constant changes in the high-frequency range of 100 MHz and above even with prolonged use at high temperatures of 100°C and higher, while it is also possible to satisfactorily prevent deformation and other damage to the electronic parts during their handling.
本发明提供了由有机绝缘材料和介电陶瓷粉构成的复合介电层(其相对介电常数比有机绝缘材料大)组成的电子零件,该电子零件还包括构成电感器元件等的导电元件部分,其中有机绝缘材料包括通过环氧
树脂与活性酯化合物的固化反应得到的固化
树脂,活性酯化合物是由具有两个或两个以上羧基的化合物与具有
酚羟基的化合物反应得到的。所述电子零件的介电陶瓷粉的相对介电常数比有机绝缘材料大,而有机绝缘材料的介电损耗正切值低。在 100 兆赫及以上的高频范围内,即使在 100 摄氏度及以上的高温下长期使用,也能充分降低随时间变化的介电常数变化,同时还能令人满意地防止电子部件在处理过程中发生变形和其他损坏。