Hello Committe members, I have a question about Copper thickness in Blind Vias. In the IPC-6012 ,provided two selection for it in the table; one is blind vias and the other is Low Aspect Ratio vias ,I wonder how to calculate the Aspect and if any true data instead of the uncertainty word " low aspect" .Wish get your advice ! Regards Constantino J. González ACME, Inc. 513 Cleveland Street, Suite # 300 Rapid City, SD 57701 Cell # 605-381-5963 Fax # 605-341-4261 E-mail: [log in to unmask]