Patent ID: 8754519

Claim:
A package for housing a semiconductor element comprising: a base plate including a top surface and a recessed portion formed as a downwardly-recessed portion of the top surface; a peripheral wall provided on the top surface of the base plate; a lid provided on an upper side of the peripheral wall and forming a semiconductor element housing space in cooperation with the base plate and the peripheral wall; and a feed-through terminal including a bottom end and fixed to the recessed portion, wherein the feed-through terminal includes: an upper component and a lower component each of which is formed of an insulating member and includes a top surface; and a metalized wiring layer provided on the top surface of the lower component and extending from inside to outside of the semiconductor element housing space; wherein the peripheral wall is further provided on the top surface of the upper component of the feed-through terminal, the peripheral wall includes a cut-away portion formed at a position corresponding to the recessed portion and extending toward the lid, the upper component is placed in the cut-away portion, and the lower component is placed in the recessed portion.