Abstract: According to one embodiment, a semiconductor storage device includes strings each with a first select transistor, memory cell transistors, and a second select transistor connected in series. Word lines are provided, each connected to memory cell transistors in a same position across the strings. A bit line is connected in common to a first end of each of the strings. A source line is connected in common to a second end of each of the strings. A control circuit is configured to perform an erase operation on strings. The control circuit adjusts, for each of the strings, either an application time of a first voltage applied to a gate of the first select transistor of the respective string in the erase operation or a voltage level of the first voltage applied to the gate of the first select transistor of the respective string in the erase operation.

Abstract: An electronic device with a cooling function includes a cap nut, a case, a semiconductor unit, a second bus bar for external output, and a connecting bolt. The case includes a side wall and a bottom surface. The bottom surface of the case has a coolant passage and a recessed portion to receive the cap nut. The coolant passage is open to above and is generally U-shaped. The recessed portion is positioned in a position surrounded by the coolant passage and the side wall of the case, and the cap nut is received in the recessed portion. The semiconductor unit includes a first bus bar that extends from the semiconductor unit. The semiconductor unit is fixed to the case in a posture and position that closes off the coolant passage from above. The second bus bar passes through the side wall of the case.

Abstract: An electronic device with a cooling function includes a cap nut, a case, a semiconductor unit, a second bus bar for external output, and a connecting bolt. The case includes a side wall and a bottom surface. The bottom surface of the case has a coolant passage and a recessed portion to receive the cap nut. The coolant passage is open to above and is generally U-shaped. The recessed portion is positioned in a position surrounded by the coolant passage and the side wall of the case, and the cap nut is received in the recessed portion. The semiconductor unit includes a first bus bar that extends from the semiconductor unit. The semiconductor unit is fixed to the case in a posture and position that closes off the coolant passage from above. The second bus bar passes through the side wall of the case.