ABSTRACT
This chapter begins with an explanation of the use of design of experiments to set up and optimize the operating parameters in developing a new hybrid microcircuit assembly process. It obtains information about a wide range of parameters. The chapter explains Taguchi L18 array to evaluate as many factors as possible, without considering interactions among them. This is sometimes called a screening experiment, or a main effects experiment. The components to be attached to the substrate are a MOSFET integrated circuit and two resistors. They are placed on a ceramic substrate with a metallized conductor pattern, which has previously had solder paste screened onto the component attachment sites. The substrate is then baked in an oven to dry it, and placed on a conveyor belt which passes through a furnace. The furnace melts the solder, reflows it, and attaches the components mechanically and electrically to the metallized pattern on the substrate.
