Electronic component, method of manufacturing same, composite module including electronic component, and method of manufacturing same

A composite module comprising:

• a module substrate including mounting electrode;
• and
• an electronic component mounted on the module substrate, the electronic component including:
• an element substrate;
• a functional element disposed on a first principal surface of the element substrate;
• a terminal electrode disposed on the first principal surface;
• a connection electrode disposed on the first principal surface with the terminal electrode interposed between the connection electrode and the first principal surface, and the connection electrode being electrically coupled to the functional element;
• and
• an insulating layer disposed on the first principal surface and directly surrounding the connection electrode and a space that includes the functional element;
• wherein
• the insulating layer is disposed on the first principal surface so as to cover an entire surface of the connection electrode;
• the insulating layer directly and completely covers a side surface of the mounting electrode and a side surface of the terminal electrode;
• the insulating layer directly and completely covers the entire surface of the connection electrode;
• a height of the insulating layer measured from the first principal surface is equal to or greater than a height of the connection electrode measured from the first principal surface;
• the connection electrode is made of solder;
• the insulating layer is made of resin that softens at a temperature lower than a melting temperature of the solder and that cures at the melting temperature of the solder;
• an outer peripheral side surface of the insulating layer is co-planar or substantially co-planar with an outer peripheral side surface of the element substrate;
• and
• a curing temperature of the resin of the insulating layer is equal to or higher than 180° C.;
• wherein
• the electronic component is mounted on a mounting surface of the module substrate from the first principal surface side, and the space is defined between the element substrate and the module substrate.