| 摘要 |
PROBLEM TO BE SOLVED: To reduce the weight and direct material cost of a main circuit terminal for leads while the bonding characteristics to an aluminum wire internally connected to the terminal is improved for reliability. SOLUTION: A main circuit terminal is led out of the upper perimeter of a jacket resin case 1 where a circuit assembly 2 comprising a power semiconductor element 2a is housed. The main circuit terminal is internally connected to the circuit assembly with a bonding wire 8 of aluminum inside the case. Here, the main circuit terminal is an aluminum terminal 4A of an aluminum which is lighter and less expensive compared to a copper material while excellent in bonding characteristics to an aluminum wire, with at least an external lead-out part of the main circuit terminal plated with nickel 4A-1. |
