SMD Production & Trough-Hole Assembly

» Surface Mount Device

In lieu of drilling holes, SMT enables electrical components to be mounted, or directly placed, onto the surface of a PCB. Generally speaking, SMT components are smaller than their through-hole counterparts. This is due to the fact that SMT components either have smaller leads, or no leads at all. Because the PCB of a surface-mount devices (SMD) does not require as many drilled holes, and the components are more compact, higher circuit densities are possible on smaller boards. This is especially important, as today's electronics are growing more complex and more compact. Additionally, surface mounted technology is typically less expensive than through-hole mounting.

» Trough-Hole Technology

For years, through-hole technology was utilized in the construction of nearly all printed circuit boards. This particular mounting scheme involves the use of leads on electrical components, which are then inserted into holes that were drilled on the PCB and soldered to pads situated on the opposite side. Through-hole mounting is extremely reliable, as it provides strong mechanical bonds, however, the additional drilling makes the production of boards significantly more expensive. Additionally, the presence of holes in the PCB create limitations in terms of the available routing area for signal traces on the layers which are immediately beneath the top layer on multi-layer boards. These issues are just two of the many reasons that surface mounted technology became so popular in the 1980s.

Actsource Ltd. is specialised in both, SMD, THT or mixed technologies. We have our own assembly line for through-hole mounting and DIP and can handle SMD components from a size of 0402.