Patent ID: 7569471

Claim:
A method of providing electrically conductive bumps on electrode pads of a microelectronic substrate comprising: providing a microelectronic substrate including first electrode pads and second electrode pads thereon, the first electrode pads exhibiting a first pattern, and the second electrode pads exhibiting a second pattern different from the first pattern; attaching first solder portions to a solder delivery head according to the first pattern, and after attaching said first solder portions, attaching second solder portions to the solder delivery head according to the second pattern, the second solder portions being a different size than the first solder portions; after attaching, simultaneously releasing the first solder portions onto the first electrode pads and the second solder portions onto the second electrode pads; after releasing, reflowing the first solder portions and second solder portions to form, respectively, first solder bumps and second solder bumps on respective ones of the first electrode pads and the second electrode pads.