Abstract: A method and apparatus are provided for controllably dispensing flux on a substrate having a plurality of conductive terminals. Flux having a viscosity range between 10 centipoises and about 150 centipoises is sprayed on the substrate and the conductive terminals at a valve pressure range between about 1.5 psi and about 30 psi via a dispense nozzle of a flux dispenser. Upon a subsequent high temperature solder reflow process, the sprayed flux on the substrate is mostly removed by thermal decomposition to volatile species, thereby significantly reducing flux residue remaining on the surface of the substrate between the conductive terminals.

Abstract: A universal attach manufacturing process employs a boat onto which solder balls or columns are loaded. A universal attach line has a number of attach station to accommodate different types of attach processes. Depending on the process and the desired configuration and form factor of the array of solder balls or columns, a template is selected that covers some of the holes in the universal boat, and exposes other holes. The solder balls or columns are held securely in the exposed holes, and a substrate is placed onto the solder balls. Once loaded with balls or columns, the universal boat is transported to only the appropriate attach stations in the universal attach line, where the different attach operations for a given attach process, such as high temperature ball attach, eutectic ball attach, or column attach, are performed.

Abstract: A method and apparatus are provided for controllably dispensing flux on a substrate having a plurality of conductive terminals. Flux having a viscosity range between 10 centipoises and about 150 centipoises is sprayed on the substrate and the conductive terminals at a valve pressure range between about 1.5 psi and about 30 psi via a dispense nozzle of a flux dispenser. Upon a subsequent high temperature solder reflow process, the sprayed flux on the substrate is mostly removed by thermal decomposition to volatile species, thereby significantly reducing flux residue remaining on the surface of the substrate between the conductive terminals.