LCM products, double sided, BGA pads, gold plating

Surface-mount technology (SMT), originally called planar mounting, is a method in which the electrical
components are mounted directly onto the surface of a printed circuit board (PCB).An electrical component
mounted in this manner is referred to as a surface-mount device (SMD). In industry, this approach has largely
replaced the through-hole technology construction method of fitting components, in large part because SMT
allows for increased manufacturing automation which reduces cost and improves quality. It also allows for
more components to fit on a given area of substrate. Both technologies can be used on the same board, with
the through-hole technology often used for components not suitable for surface mounting such as large
transformers and heat-sinked power semiconductors.