Can you do 2 layer RO4350 PCB with metal filled vias together with the 5mm metal back? June 26, 2020 By Wellerpcb Team 824 views Sorry, we cannot do via filled to Rogers material, as Rogers material is too fragile, which is easy to be expanded to be “broken” by filling copper; 5mm metal back plate is ok Likes (0) CONTACT US NOW Attachment: ( a .zip or .rar file, max 25MB ) We’ll do our best to get back to you ASAP. Please enable JavaScript for this form to work.