Photoresist
Description:Photoresists are usually polymers for photochemical machining. Prior to etching the resist is applied to copper. Then layout is exposed on prepared boards. Common resists resp
RoHS
Description:RoHS is the Restriction of Hazardous Substances Directive. This EU legislation says that electronic devices may not contain lead or certain other hazardous substances. For circuit bo
Aspect Ratio
Aspect Ratio is the quotient of the PCB thickness to the diameter of the final hole. Maximum aspect ratio is limited by drilling machine and throughplating process for vias.
Design for Assembly
As well as DFM describes the process to make printed circuit boards ‘producible’, Design for Assembly DfA stands for designing printed circuit boards which are already optimized f
Design for Manufacturing
Design for Manufacturing (short DfM) describes the process of PCB layouting in close coordination with the PCB production and within the printed circuit board manufacturer pr
