The challenge is common, sustaining a paste deposition capable of meeting the SMT assembly requirements based on design. All processes are individualized, but a common is to have a design appropriate for the process.
The testing proved that each of the technologies used for stencils have merit but not one has a complete scope of the print environment. The constant here is the tools, which must be improved to help produce the results required.
The stencil is a major role player in this solution, considering all the merits of the different technologies, the COBRA was designed to emulate the combination of these merits.
The results of the 2 options for the COBRA proved that we can actually improve the PHD material to emulate the Ni option as well, in all aspects of the manufacturing needs.
Meeting the demands of the manufacturing world, while improving process and maintaining it. This is a process tool which with proper design will enhance the printers performance and support the EOL yields.
The data collected is based on testing in a SMT lab in Guadalajara Jalisco Mexico. Using a DEK printer and SPI system with auto data analysis. The graphs reflect the data collected by the SPI measurement system.
All processes must be evaluated prior to actual design.
The theory of improving a stencil aperture design to improve manufacturing yields is achieved by improving the age old original stencil. Back to basics.