Patent ID: 7886955

Claim:
A solder ball mounting device for mounting solder balls to be solder bumps on a printed circuit board using a mask having a plurality of openings corresponding to electrodes of a printed circuit board, the device comprising: a cylindrical member, which is positioned above the mask for arraying solder balls, for gathering solder balls immediately below the openings by sucking in air from the openings; a movement mechanism for moving said cylindrical member horizontally relative to said mask for arraying solder balls, wherein solder balls gathered on said mask for arraying solder balls are moved by moving said cylindrical member and are then dropped on electrodes of the printed circuit board via openings of the mask for arraying solder balls; and a current plate placed within said cylindrical member, wherein at least a part of said current plate is positioned in an inner space formed by inner walls of the cylindrical member, wherein said current plate is formed upward separately from the bottom of the cylindrical member by at least 1/40 to less than 1/20 of an entire length of said cylindrical member and formed so that a width of protrusion of the current plate does not reach a center of said cylindrical member.