Adhesive printability test results using several thick stencil materials and aperture cross-sections to achieve a significant range of deposit heights and diameters are presented. Adhesive printing performance is gauged via quantitative adhesive deposit height a'nd diameter data using laser triangulation techniques. The effects on the deposit height range for a spectrum of aperture diameters is quantified with stencil and process guidelines proposed. Printing methods for SMT adhesives for both pre and post AI assembly are compared. Normal Squeegee printing and Enclosed Print Head (EPH) printing method results are compared and contrasted. Data presented is from the measurement of 105,600 printed dots.
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