| 摘要 |
A substrate having a metal capsule (57) which has an open end caulked to a planar periphery portion and in which an electric apparatus is accommodated includes a substrate main body having a planar central projecting portion (13) consisting of a resin material and a step (12) provided on a side of the flat plate portion located opposite a mounted surface side, an annular metal member (11) which is located between a peripheral part of the central projecting portion (13) and a flat plate portion and which is partly exposed toward the mounted surface side like a flange, a plurality of external terminals provided on the mounted surface of the central projecting portion (13), a metal coat (16) connected to the annular metal member (11) and to at least one of the external terminals and formed along an outer surface of the central projecting portion (13), a plurality of internal terminals (21) provided on an inner surface of the substrate main body located opposite the mounted surface side, ground through-holes (25) formed in a planar peripheral portion at a position where the annular metal member is sandwiched, the ground through-holes connecting some of the internal terminals to the annular metal member (11), and signal through-holes (24) and (17) formed in the substrate main body and connecting the other internal terminals to the external terminals.
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