Patent ID: 8765594

Claim:
A method of fabricating a semiconductor device having a plurality of bumps formed on a semiconductor substrate, the method comprising: removing, after forming solder for forming the plurality of bumps on the semiconductor substrate, an oxide film formed on a surface of the solder while heating the semiconductor substrate with first radiant heat, the semiconductor substrate being supported during the removing step by plural support arms that extend a first distance through a heater stage that supplies the first radiant heat; and heating the semiconductor substrate with an amount of second radiant heat that is greater than the amount of the first radiant heat to reflow the solder from which the oxide film is removed, the semiconductor substrate being supported during the heating step by tapered points of plural holding pins that are spaced from the plural support arms and that extend a second distance through the heater stage that also supplies the second radiant heat, the second distance being less than the first distance, wherein the tapered points of the plural holding pins each have a point contact with the semiconductor substrate when supporting the semiconductor substrate so that a ratio of conductive heat transfer to radiant heat transfer is negligible.