Semiconductor device and method of manufacturing semiconductor device

A method of manufacturing a semiconductor device, comprising:

• a functional block preparation step of preparing a functional block unit, wherein the functional block unit includes a semiconductor element, at least one internal terminal having a first end and a second end and electrically connected to the semiconductor element, and an internal resin sealing body covering the semiconductor element and the first end of the at least one internal terminal but not covering the second end of the at least one internal terminal;
• an external terminal preparation step of preparing an external terminal having a third end and a fourth end;
• a connection step of connecting the third end of the external terminal to the second end of the at least one internal terminal;
• and
• an external resin sealing step of, after the connection step, covering the second end of the at least one internal terminal and the third end of the external terminal with a resin, but not covering the fourth end of the external terminal.