A glass-metal feedthrough includes: an external conductor having a coefficient of expansion α, and having an opening formed therein; an internal conductor disposed in the opening, the internal conductor including iron and having a coefficient of expansion α, the external conductor and the internal…

A glass-metal feedthrough includes: an external conductor including steel, having a coefficient of expansion α, and having an opening formed therein; an internal conductor disposed in the opening, the internal conductor including steel and having a coefficient of expansion α. The external conductor…