In the case of mounting a passive element in a circuit device, since an
electrode part is
tin-plated, the passive element is fixed to a mounting land part by use of a
solder material, and wires cannot intersect with each other in a single layer. Accordingly, there are problems such as an increase in a mounting area, a restriction to a reflow temperature in mounting on a printed board, and deterioration of reliability due to solder crack after packaging. The
electrode part of the passive element is gold-plated, and a bonding wire is directly fixed to the
electrode part. Thus, a packaging density can be improved. Moreover, a
package structure using no supporting substrate is adopted, and the passive element is bonded to an isolation trench. Thus, even in a structure having the bonding wire fixed therein, an increase in a
package thickness is suppressed.