Are there any special layout concerns (spacing, etc.) when designing RoHS compliant printed circuit boards?
No, unless you have impedance requirements that might change depending on the materials used. • What cost increase can be expected between standard and RoHS printed circuit boards? We are providing our lead-free solder finish at no additional charge to our customers. There are, however, increased price differentials associated with the higher temp laminates required by some lead-free component assembly as well as other final plating finishes that will be reflected in unit price if ordered by customer. • What additional language should be added to fabrication documentation to ensure that the PCBs will come back RoHS compliant? First, add a statement that either lists the 6 offending elements or manufacture/fabricate to meet the EU RoHS Directive. Second, state the type of material you need using the IPC-4101 spec sheets and list any tolerances you expect the material to meet. Or you could list a preferred laminate by manufacturer & name and add or equivalent. Ask for certification that
