Patent ID: 8157157
Filing Date: 2012-04-17
Classification: B23K,H05K

Abstract:
1. A solder ball loading method for loading solder balls on connection pads of a sheet printed wiring board, comprising multiple printed wiring boards each of which has a respective connection pad formation region that includes a plurality of said connection pads, the method comprising: forming a solder resist layer on the sheet printed wiring board, the solder resist layer having openings each of which expose at least part of a respective connection pad within the connection pad formation regions of each of the printed wiring boards; applying a flux on an entire surface of each of the connection pad formation regions such that the connection pads of each of the printed wiring boards are covered with the flux; preparing a mask including: aligning the openings of the mask main body to face the respective connection pads of the printed wiring board; and supplying the solder ball to the mask; and dropping the solder ball on the connection pad having flux thereon, through one of the plurality of openings of the mask main body.