A composite electronic component includes a metal component with a wide surface terminal, a printed circuit board with a wide surface mounting pad; and a plurality of small area solder films partitioned into small sectioned regions. The small sectioned regions are sectioned by grid-shaped solder resist banks on the wide surface mounting pad. A cream solder is applied on the individual small sectioned regions to form the plurality of small area solder films. The grid-shaped solder resist bank has a width configured to: reduce a bubble that occurs in the sectioned region at one side of the grid-shaped solder resist bank from merging with a bubble that occurs in the sectioned region at another side of the grid-shaped solder resist bank; and act as an escaping route for a bubble that occur in the small area solder film.