Hello Technetters Recently with the help of a high end piece of x-ray equipment we have noticed voids in the spheres of the bga after reflow, "see attachment-file". Has anyone seen this before, or has any idea how the voids are created? Also does anyone know if this is a bad or good thing? Does anyone have any recommendations to the profile? Thanks Bob Perkins Automation Technician/Manufacturing Engineer Aimtronics [log in to unmask] <<wboard6.jpg>>