| abstract |
PROBLEM TO BE SOLVED: To provide a wiring board capable of strengthening the bonding between an external terminal and wiring of an external circuit board. A wiring board includes two main surfaces facing each other, a side surface connected to the two main surfaces, and a recess recessed from the side surface and connected to at least one main surface of the two main surfaces. Insulating substrate 11 having, and is provided from one main surface to the inner surface of the recess 12, In addition, an external terminal 13 having a convex portion 131 provided along the concave portion 12 is provided on one main surface side. [Selection] Figure 1 |