| 摘要 |
A switching board 10 is provided with a control circuit board 20 including a control circuit 22, first mounting windows 24A and second mounting windows 24B, a circuit constituent 11 including an input busbar 30, an output busbar 40 and a connection busbar 50 arranged on one surface of the control circuit board 20, and first and second semiconductor switching elements 60A, 60B. The first semiconductor switching elements 60A are arranged inside the first mounting windows 24A and have drain terminals 62 connected to the input busbar 30, source terminals 63 connected to the connection busbar 50 and gate terminals 64 connected to the control circuit 22. The second semiconductor switching elements 60B are arranged inside the second mounting windows 24B and have drain terminals 62 connected to the output busbar 40, source terminals 63 connected to the connection busbar 50 and gate terminals 64 connected to the control circuit 22. |
