Ceramic electronic component

摘要

A ceramic electronic component includes external electrodes having a multi-layer structure including an intermediate conductive resin layer, wherein the intermediate conductive resin layer in the external electrode is made of epoxy resin containing conductive filler, and the intermediate conductive resin layer meets both the condition B/A≦0.47 and condition C/A≧0.39 (A, B and C represent the maximum spectral intensities obtained based on the relationship line of the wave number and spectral intensity of the intermediate conductive resin layer as obtained by the ATR method). The ceramic electronic component minimizes separation that could occur at the interface between such intermediate conductive resin layer and a metal layer.

主权项

1. A ceramic electronic component having external electrodes of multi-layer structure including an intermediate conductive resin layer made of synthetic resin containing conductive filler, wherein:
the intermediate conductive resin layer is made of epoxy resin containing conductive filler; and the intermediate conductive resin layer meets both a condition B/A≦0.47 and a condition C/A≧0.39 in a two-axis graph representing a relationship line of a wave number and spectral intensity of the intermediate conductive resin layer as measured by attenuated total reflectance (ATR) where:
A represents a maximum spectral intensity when, given a reference line BLa set by connecting a spectral intensity at wave number 1400 cm−1 and spectral intensity at wave number 1560 cm−1 along the relationship line, a distance between an intersection point A1 of a detection line DLa drawn in parallel with a spectral intensity axis in a wave number range of 1500±25 cm−1 and the relationship line on one hand and an intersection point A2 of the detection line DLa and reference line BLa on the other, as calculated by (Spectral intensity at intersection point A1)−(Spectral intensity at intersection point A2), becomes a maximum;B represents a maximum spectral intensity when, given a reference line BLb set by connecting a spectral intensity at wave number 1560 cm−1 and spectral intensity at wave number 1800 cm−1 along the relationship line, a distance between an intersection point B1 of a detection line DLb drawn in parallel with a spectral intensity axis in a wave number range of 1730±25 cm31 1 and the relationship line on one hand and an intersection point B2 of the detection line DLb and reference line BLb on the other, as calculated by (Spectral intensity at intersection point B1)−(Spectral intensity at intersection point B2), becomes a maximum; andC represents a maximum spectral intensity when, given a reference line BLc set by connecting a spectral intensity at wave number 3075 cm31 1 and spectral intensity at wave number 3675 cm31 1 along the relationship line, a distance between an intersection point C1 of a detection line DLc drawn in parallel with a spectral intensity axis in a wave number range of 3300±300 cm31 1 and the relationship line on one hand and an intersection point C2 of the detection line DLc and reference line BLc on the other, as calculated by (Spectral intensity at intersection point C1)−(Spectral intensity at intersection point C2), becomes a maximum.