Micromechanical inertial sensor and method for manufacturing same

A micromechanical inertial sensor, comprising:

• at least one ASIC element having a processed front side;
• at least one MEMS element having a micromechanical sensor structure which includes at least one seismic mass and extends over an entire thickness of a substrate of the MEMS element, wherein the MEMS element is mounted on the processed front side of the ASIC element above a standoff structure, and wherein the MEMS element is electrically connected to the ASIC element via through-contacts in the substrate of the MEMS element and in adjacent supports of the standoff structure;
• and
• a cap wafer mounted above the micromechanical sensor structure of the MEMS element;
• wherein, at least in an area of the seismic mass, at least one blind hole is formed in the substrate of the MEMS element, the blind hole being filled with an electrically conductive material which also fills the through-contacts, and wherein the electrically conductive material has a greater density than the substrate material of the MEMS element.