These might be our standard builds, but it is routine to change it and usually there is no additional charge for changing material thickness. For jobs that have impedance requirements we have the full suite of software that shows all the material used in your PCB along with the calculated impedances. It will also create a TDR coupon specific for your design that we can test to verify that the finished product matches the calculations.

There are lots of designs that the layer to layer spacing is important – including high speed designs, internal capacitance may be a factor, and different RF. You can work with us so it can be fully specified on the print prior to placing the order and that way future revisions will be built the same way.

We also have a TDR Form to assist you during the design process. — TDR Form