| 摘要 |
An alumina sintered body comprises an alumina substrate having a first main surface and a second main surface opposing each other, an embedded film electrode made of a metal and embedded in the alumina substrate at a depth H<SUB>D </SUB>of 0.4 mm or less from a first main surface SF<SUB>1</SUB>, and an embedded terminal formed of a metal, embedded in the alumina substrate nearer a second main surface SF<SUB>2 </SUB>side than the embedded electrode. The embedded terminal is in contact with the embedded electrode and a film thickness H<SUB>E </SUB>of the embedded electrode is 25 mum or less.
|
