Patent attributes
In a rectifier for an automotive alternator, each of the rectifying elements includes a semiconductor chip and a lead electrode that connects the semiconductor chip to a corresponding one of terminals. The lead electrode has a joining portion joined to a second surface of the semiconductor chip and a lead body portion extending in a direction perpendicular to the second surface. The corresponding terminal has a joining portion that protrudes out of a terminal base and extends in the direction parallel to the second surface to be joined to the lead body portion. The joining portion of the corresponding terminal is formed of first and second terminal plates that are laminated in the direction perpendicular to the second surface. The first terminal plate is located farther from the semiconductor chip than the second terminal plate and has a larger coefficient of thermal expansion than the second terminal plate.
