Semiconductor device

A semiconductor device comprising:

• a plurality of coolers arranged in a line, each of the coolers including a first flow path;
• semiconductor modules, each of the semiconductor modules being interposed between a corresponding pair of the coolers adjacent to each other;
• and
• a pair of connecting pipes, each, of the pair of connecting pipes communicating with the coolers adjacent to each other, the pair of connecting pipes located respectively at both sides of the semiconductor modules in a direction intersecting a stacking direction of the coolers and the semiconductor modules,
• wherein
• a pair of coolant holes is provided at one of the coolers located at one end in the stacking direction,
• each of the coolant holes overlaps corresponding one of the pair of the connecting pipes in a view along the stacking direction,
• a pair of second flow paths extends respectively from the coolant holes to one of the coolers located at other end in the stacking direction,
• a bolt-head retainer and an internally threaded portion are provided in each of the second flow paths, the bolt-head retainer retaining a head of a bolt, and the internally threaded portion fixing the bolt, and
• the coolers between the bolt-head retainers and the internally threaded portions are fixed by the bolts.