Redefining Customer Service
Customer Support | Phone: 717-558-5975

Fiducial marks are dots etched on board panel for which SMT assembly is required (provide viewing targets for camera to locate correct position). These marks should be in diameter of approx. 0.06″ and free from solder mask. There should be 2 sets of fiducials if fine-pitch components are use. The first set is called the panel mark, one for each panel corners (at lease .5″ from any panel tooling holes). The second set is called the local mark, one for each fine-pitch IC located at the absolute center position of that IC.

PCB Glossary

  • HDI (High Density Interconnect)

    Ultra fine-geometry multi-layer PCB constructed with conductive microvia connections. These boards also usually include buried and/or blind vias and are made by sequential lamination.