Hello Technetters! I am interested in reliability of plate thickness for "SEQUENTIAL BUILD-UP PCB". Have you had test for "BVH" and "IVH" ? Can anyone explain to me what the minimum plate thickness is for completed BVH ,IVH ? If so, please let me know specification of that. * Next PTH SPEC is one of the "BVH,"IVH". BVH : HOLE SIZE : 0.1mm , DIELECTRIC THICKNESS: 0.06mm IVH : HOLE SIZE : 0.25mm, DIELECTRIC THICKNESS: 0.6mm Your input is always appreciated. Best Regards, Jae-heun Joung. [log in to unmask] SEMCO. TEL: 82-415-861-1359 FAX: 82-415-861-1332. ############################################################## TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c ############################################################## To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TECHNET <your full name> To unsubscribe: SIGNOFF TECHNET ############################################################## Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information. For the technical support contact Dmitriy Sklyar at [log in to unmask] or 847-509-9700 ext.311 ##############################################################