A braze bonded nail head includes a nail head lead having a first end with first and second sides and a braze alloy preform coupled to the first side of the first end of the nail head lead The braze bonded nail head further includes a weld joint centrally located on the braze alloy preform and extending through the braze alloy preform to the first end of the nail head lead. The weld joint is formed through micro-tig-welding, in alternative embodiments of the invention, one of the nail head lead and the braze alloy preform may include at least one protrusion extending therefrom, while the other of the nail head lead and the braze alloy preforms may include at least one interfit element configured to interfit with the at least one protrusion.

An annular structure for an electronic flame off (EFO) wand of a wire bonder is positioned beneath a capillary of the wire bonder. The annular structure provides uniform heat to a bond wire extending from the capillary to form a free air ball (FAB). Because heat is uniformly applied to the bond wire, the FAB is uniformly formed and is centered with respect to the capillary. The FAB is then bonded to a bond pad of a substrate. Because the FAB was uniformly formed and is centered on the capillary, the FAB will also be centered on the bond pad.