| abstract |
A surface mounting package includes a metal base ( 1 ) with a lower surface having a through hole, a metal lead ( 2 ) arranged to be inserted into the through hole, an insulating material ( 3 ) filling in an internal space defined by the metal base ( 1 ), a cap ( 30 ) covering the metal base ( 1 ) as a lid, and an electronic part component arranged at a surface ( 2 i ) on the internal space side of the metal lead ( 2 ). The internal space is held at an air-tight atmosphere. The metal base ( 1 ) has a lower surface positioned on the same plane as a lower surface of the metal lead ( 2 ) or the insulating material ( 3 ), the same plane (P) forming a plane to be attached to a mounting board. |