A method for manufacturing an electronic component includes the steps of
inserting tabs of a cover into through holes formed in a circuit board
having mounting elements on the front surface thereof, disposing a print
mask having openings at positions corresponding to the through holes on
the back surface of the circuit board, and supplying solder cream to the
through holes through the openings by placing the solder cream on the
print mask and moving the solder cream in a predetermined direction with
a squeegee. The print mask is provided with projections which project
upstream in the moving direction of the solder cream in openings of the
print mask, and the openings are shifted upstream in the moving direction
of the solder cream. In addition, the tabs are inserted into the through
holes such that the width direction of the tabs is along the moving
direction of the solder cream.