4 layer and above are limited to 20x14 and could be further reduced based on additional specifications.

We have several inner layer cores available using Isola's FR406 and 370HR materials - they include 5, 8, 9.5, 14, 18, 21, 28, 35, 39, 47, 59 and 93 mil cores.

- Six layer boards are produced in thickness of 0.031", 0.040", 0.047", 0.062", 0.093" and 0.125" with the same inner layer foil options.

- Both our eight and ten layer printed circuit boards are available in finished thickness of 0.062", 0.093" and 0.125".